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Introduction- Summer 2003 |
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| Introduction Welcome to the first edition of the QRP Home Companion column. As a long-time reader, I was honored when Editor Michael Boatright, KO4WX asked me if me if I would be willing to write a regular column for the QRP Quarterly. In this first column I want to give you an overview of who I am, what I will cover each issue and a few tidbits of information for you to chew on until the next QRP Quarterly. Who is K8ZT? First here are the facts—I am 47 years old and have been a ham since 1981. I live in Northeast Ohio with my wife Linda, KA8ODP, and our teenage children Aaron and Erica. I am employed as a Technology Director for a small public school district (which means I am responsible for all aspects of technology: computers, software, repairs, purchasing, installation, network administration, staff training, Internet access, district web page, telephones, etc.) Welcome to the first edition of the QRP Home Companion column. I had been interested in becoming a ham since my high school days but did not know how to become one. After college and marriage, my wife read a newspaper piece about a class to get your Amateur Radio license being held in the area. She did not have to ask me twice, I was ready to go. She agreed to go along with me. After a few months we both had our Novice licenses. My call sign was KA8NRC. I upgraded to Technician later that year. How I came to be a QRPer was the result of a radio advertisement I had lusted over in an electronics magazine from my high school days. I had been very active in Boy Scouts and camping so the Ten-Tec PM-1 in the ad seemed like the perfect radio, lightweight, low battery drain and very |
portable (for its time!) So when it came timeto buy my
first radio, my thoughts went back to that radio ad. In 1981 Ten-Tec
was no longer producing the
Power Mites, but they did have another small portable radio, the
Ten-Tec Argonaut 515. After saving up money for a few months, I made my
first ham purchase - a brand new shiny black Argonaut 515 (which is
still a prized possession of mine.) With my purchase, I had become a
QRPer from the very beginning of my ham career. Back in the pre-Internet days, the main source of information for a new comer to any hobby was magazines written on the subject. I love to read and definitely needed more information to actually get on the air, so I subscribed to the big three: QST, CQ and 73. I soon spent my lunchhour at work accompanied by a ham magazine. I read an article about QRP (unfortunately I don’t remember the exact article) and two clubs, the G-QRP and QRP-ARCI. The next day I sent off checks to join both clubs. The two quarterly QRP journals soon became my favorite reading material and I waited impatiently for each new issue to arrive. With the two QRP journals as encouragement and my QRP rig, I proceeded to get on the air and actually work stations. I didn’t know “that QRP wasn’t the best way to start out as a new ham” as others would later tell me. That is how I started my almost exclusively QRP ham adventure of over twenty years. Starting with the Argonaut’s approximately two watts taught me many trick to make contacts with little power. Along the way I read many invaluable operating, equipment and antenna hints in the QRP Quarterly. In the mid 1980s, through the QRP Quarterly, I learned about an informal gathering of QRP operators at a now defunct downtown hotel in Dayton. I had |
been to the Hamvention before, but now it was even more
fun. The hotel was marginal, but the QRP gathering was fabulous. I got
a chance to put faces and personalities on many of the QRPers who wrote
for QQ and SPRAT, the QRP ARCI officers and QRPers that I had contacted
on the air. These gatherings predated the now well-organized FDIM event
and were much more informal but full of information for a curious
new
QRPer. Let’s fast forward to 2000 (don’t worry I will fill in the gaps in future columns.) In 2000, I upgraded my license to Extra Class and after many agonizing hours I decided to change my call sign to K8ZT. (To read my article “Selecting an Ideal Vanity Call Sign” and get a copy of a spreadsheet to assist you, visit . This article led me to write a monthly column on QRP for the ARRL’s website called The QRP Community. You can visit www.arrl.org to read past columns, just search using “QRP Community” or my call sign. That is enough about me for now (maybe too much!) What is the QRP Home Companion column? My goal for each edition is to highlight a few of the many different aspects of QRPing. We will be taking a look at operating events, contests and awards. I will keep you up-to-date on gear for the QRPer including kits, homebrewing and commercial equipment. I will pass on hints and tricks for QRP success and fun. Each column will include a wide variety of QRP resources (both in print and on-line.) Let me start out with a variety of QRP links you can find on my website’s QRP page I welcome your input and suggestions for this column. Please contact me via e-mail. Thanks for the opportunity to write for the QRP Quarterly and hope to work you on the air, QRP. |
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QRP DXing- Fall 2003 |
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| I
must confess that DX is my ham radio weakness. Given the chance to do
any ham activity, DXing usually wins out. You might remember, from my last column, that I began my ham career with a Ten-Tec Argonaut 515 QRP Transceiver. When I first received my license I was disappointed that I was not working any DX. Initially I feared that my QRP rig would not be able to work DX. Luckily, I found out that QRP level operation was not my problem; my problem was ignorance of propagation and international band plans. Unlike then, I now know that my CQing in the novice portion of 40 Meters did not result in DX because most DX countries did not have privileges above 7.100! Also my late evening calls on 15 Meters were unsuccessful because band propagation had shut down hours ago! Keys to My DX Success Eventually I became more aware of international band plans and the multiple cycles of propagation (day/night, seasonal and 11 year.) Soon being on the right band at the right times began to yield my first DX contacts. Over the years I have learned a lot more “tricks” to working DX with QRP. Many of these tricks are applicable to not only DXing but also contesting, award chasing and even routine day-to-day operations. If you happen to also operate QRO, skills built with these QRP DXing operation tips can almost give you an unfair advantage over typical QRO operators (HI HI!) Ten Tips for QRP DXing: 1) Operate! Get on the air! More time on the air can definitely increase your chances, especially if you know when and where to hang out. |
2) Listen, Listen,
Listen! Listen carefully, check weak signals that others skip over, thoroughly explore the bands for “hidden” DX. If you find the DX before the horde descends, your chances to work the DX are much greater. Listen to the stations the DX station is working for a good idea of propagation and the DX station’s operating style. Listen to how and where the DX station is working other stations. Is he working split--i.e. listening “up” or “down” in frequency, answering late callers, systematically moving his listening frequency or asking specifically for QRP stations? 3) Timing, Timing, Timing Develop good response timing Knowing when to respond, pacing, emphasis and calling techniques will increase your chances of success. 4) Learn about propagation Consult forecasts, check daily numbers (SFI, A and K), use propagation prediction software and review your logs from bygone seasons, years and solar cycles. Choose your operating times to favor the area of Earth you are trying to contact. The ARRL Propagation page http://www.arrl.org/tis/info/propagation.html on the ARRL Web site has lots more information on this fascinating topic. 5) Work contests Worldwide contests provide a plethora of potential DX contacts--sometimes even the rare stuff. It’s remarkable how well your QRP signal can be heard when it means a point for the contester on the other end. For tips on QRP Contesting, see my two ARRL columns-QRP Community: Contesting http://www.k8zt.com/qrp-com.html |
6) Learn
a few key words, phrases and numbers in other languages. Visit my web page http://www.qsl.net/ k8zt/racg/racg.html for the Radio Amateur's Conversation Guide by Jukka, OH2BR and Miika, OH2BAD. 7) Optimize your station & Learn how to use your radios’ features Spend a few quality hours with your radios and their manuals. Learn how to properly operate your gear and how to use special features. For example, know how to quickly set up your rig for split-frequency operation. Put up the best antenna(s) you can. Keep your station in good operating condition 8) DX spots and news. Use the many sources of DX information to learn about DX opportunities. Sources range from magazine articles to real-time spotting networks. Visit http://www.benlo.com/dxmon.html for the excellent freeware program DX Monitor by VE3SUN 9) Keep good records Use full-featured logging software that can track DX worked and monitor your progress. Learn the most effective methods to get QSL cards from the DX stations you have worked. 10) Set personal goals Working the 330-plus DXCC entities can be a very overwhelming task for the new DXer. Setting more reasonable and modest personal goals can help a DXer to maintain motivation. The first 100 confirmed DX contacts qualify you for the ARRL basic DXCC Award Other goals might be a specific number of new ones each year, working all the entities on a specific continent, etc. |
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QRP Contesting- Winter 2004 |
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| I
am writing this in the dark November lull between my two favorite
contests, the SSB and CW versions of the CQ
World Wide DX Contest. Why are these my two favorite contests? Well
if you remember, in my last column I confessed that DX is my ham radio
weakness. If you want to work a lot of DX with QRP in a very short
time, nothing beats these two contests. With a little work, a modest
QRP station might even work entire DXCC all in one weekend! Many QRPers love contests and others hate them. If you are in the former group, I don’t need to give you reasons to work contests with QRP. But, if you are in the latter group, I have a suggestion for you. Don’t think of it as a contest. Instead, think of it as an excellent opportunity to make lots of QRP contacts. You might ask, “Why are contests a great place to make contacts?” Here is my list: 1) There are a lot of stations on the air. Just as in a chemical reaction, more molecules in a given space greatly increase reactions; more stations on the air increase the chances of making contacts. 2) Many of the stations on the air are well equipped with big antennas, the best equipment money can buy and highly skilled operators… which means all the better to pull our QRP signals out of the mud. 3) Serious contesters spend their own money to travel to DX locations (both common and rare) and put them on the air for us to work. 4) Serious contesting stations, even rare DX, really want to work you because you are worth points to them! So, my advice: If you like contests, get on the air and rack up a great score with QRP. If you don’t like contests, get on the air, give out your exchange and ignore the other station’s exchange. Don’t bother keeping score, work only the hours you want and ignore the competition. You will rack up lots of QRP contacts and DX. |
Contesting Tips The following are a few tips for successful contesting. If you don’t care about your score, you can pick and choose from the following tips. If you are serious about competing, you will want to follow most of my hints and explore other resources for even more tips. (See a list of contesting web resources at the end of this column.) 1) Know when contests are held. Visit websites of WA7BNM or SM3CER or read QST and CQ magazines’ contesting columns. (There are still plenty of good contests in the next few months.) 2) Know the rules for the contest and the exchange, if you don’t know the exchange you will not make other contesters very happy. 3) Use contesting software. Read the documentation and practice using before the contest. 4) Know operational features of your equipment (especially if you plan to work “split” on 40 phone.) 5) Timing, Timing, Timing Develop good response timing. Knowing when to respond, pacing, emphasis and calling techniques will increase your chances of success. 6) Keep current on Propagation conditions to help plan your operating schedule. 7) Scheduling is your plan for when you are going to work each band and what geographic area you expect to contact. Veteran contesters often spend considerable time scheduling. Although you need to be flexible, due to changes in band conditions, a well-planned schedule can greatly increase your effectiveness and overall score. 8) Choose your category. Based on your antennas, operating times and style, you |
may want to choose a single band entry. If you
have antennas
for all bands and plan on spending days and nights, operating an all
band entry may be your choice. 9) Pick contests that favor your operating style. Choose your favorite: mode, operating times, exchange style, venue-- DX, domestic or state. Don’t forget the QRP club sponsored contests (see the QQ Contesting Column and AMQRP calendar<http://www.amqrp.org /contesting/contesting.html>. 10) Set personal goals. It’s hard to finish first if you are just starting out in contesting, if you have a minimal station and/or antennas or if you have limited time to operate. Instead choose goals that measure your own progress at your own pace. Goals can even be very specific: working those last few states for WAS on 40 Meters, adding to your DXCC total, working all counties in a specific state (all QRP, of course.) 11) Persistence and follow-up If you want to score high or even win, you have to “stay in the chair.” You have to maximize your time on the air and then submit your log to the sponsor in the proper format by the deadline. Bonus Hint- if you want to work DX, and don’t want to get clobbered for hours by QRO stations, operate during two key times-- Thursday and Friday before the contest (when all the DXpeditions are setting up and testing their equipment) and the last few hours of the contest (when most of the stations have already worked each other and you are “fresh meat.”) Contesting Resources I have collected a number of contesting links on my website along with links to two web columns I wrote on contesting. Try QRP contesting this winter. You might really like it. Hopefully, you will work me so I can get a few more points, QRP of course. |
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Make Mine "To Go"- Winter 2004 |
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| Skip the Solder, Grab the Sander Many hams, especially new hams or retirees, have very little permanent space to devote to a ham shack. Let’s take a look a temporary shack that allows QRP equipment to be moved into place and to become instantly operational. One very effective way to create this portable shack is a wooden box with horizontal shelves inside and no front or back. A sturdy handle assists in moving your shack. A nice touch is a handle that will fold down when not in use. Removable front and rear doors can be added if the shack will be transported longer distances and/or encounter rougher transporting environments. ![]() Building your own portable ham shack is an easy project, even for beginners. There is no “tune up,” and it is guaranteed to work the first time. Here are the step-by-step instructions. Feel free to customize them for your needs. Please remember, safety first, whenever using power tools. 1) Gather the equipment you would like to package. Stack and arrange equipment in desired configuration then measure, allowing extra space for dividing shelves. 2) Select necessary wood. For shallower cases you can use 1-inch pine or hardwood in widths of 6, 8, 10 or 12 inches (remember this is nominal size; actual size of wood is smaller). For deeper cases use 3/4 or 1-inch plywood cut to your desired depth. For the internal shelves you can use 1/4-inch tempered hardwood or plywood. 3) Measure and mark your wood. You will need two lengths of pine or hardwood for the top and bottom equal to the width of your equipment plus one inch. The 1-inch space will allow you to insert foam strips on both sides of the equipment. This compressed foam strip will then help to hold equipment from sliding out of the case. 4) Cut measured wood, making sure to make a square cut (if you have access to a radial arm saw, this can assure a proper cut). Prepare strips of shelving material to the same depth as top and bottom pieces; rip using table or radial saw or cut carefully by using a circular or jig saw (clamping a straight edge on the wood to guide the saw is one trick to get a better cut). |
Cut
prepared shelf strips to length by using length of bottom piece and
adding 1/2 inch. Remember to get a nice square cut. ![]() 6) To measure side pieces, place bottom piece under stack of equipment with a piece of shelving material between each layer of equipment. Place top piece on equipment. Mark one side piece by placing it vertical next to stack. Make a mark at top of edge of each piece of shelving material. Mark top of side piece and add 1 inch to allow for finishin 7) Using marks of shelf positions on side piece, add thickness of shelving material above each mark.Using first side piece as a guide, transfer marks to second side piece. 8) Grooves Above each shelf mark cut a 1/4-inch deep groove across the side piece. This can be done with a router, radial arm saw, or circular saw (clamping a straight edge on wood to guide the circular saw will result in neater grove). ![]() Complete all grooves, then assemble, temporarily, to test fit everything. Mark top of side piece and cut to finished length. 9) Drill Holes. On a flat surface, align the four pieces, lying on their back edge, into a rectangle. Drill pilot holes for screws on side pieces. 10) Finishing Sand all pieces. If staining, apply stain now before assembly. Apply desired finish/ sealant and allow to dry. Two coats with a fine sanding in between may be necessary to get desired finish. Also apply finish/ sealant to the yet-unassembled shelves and let dry. |
11) Assemble Use wood glue and screws to assemble. Use a square to assure proper alignment of all corners. On the back of the case, metal “L” brackets can be added to strengthen and maintain square corners. ![]() 12) Test fit shelves by sliding into grooves; fit should be snug. Sand edges of shelves, if necessary, to fit. 13) Install shelves. Use a small amount of wood glue in each groove and then slide the shelves into their final position. 14) Attach handle(s) to case. Attach rubber feet or rubber molding strips to bottom to prevent scratching surfaces you place case on. 15) Install Equipment When all glue and finish are thoroughly dry, place equipment into their final locations. Then insert foam between equipment and side panels as necessary to hold in place. For foam with adhesive on one side, visit your hardware store’s weatherproofing aisle. If equipment heights on a shelf vary, you can also use foam above and/or below pieces of equipment. You can then customize as desired. Possibilities include attaching a surge protector power strip to back of case to manage multiple plugs, removable “lids” for front and back, create an extra shelf with front and back covers to store accessories (key, microphone, cables, etc.) when not in use. An extra “enclosed” shelf can also be used to store gel cell batteries for truly portable operation. For equipment with microphone, headphone or other connectors on the side you will need to cut a small access “window” in the side piece. ![]() |
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| Spring Cleaning- Spring 2004 |
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| Spring I am writing this in March, and here in Ohio, spring is beginning to emerge from the snowy ground. Spring can be a rather ambivalent season for hams. First, the bad news— good propagation surrounding the equinox is fading, noise on the low bands is increasing, preventing winter’s easy QRP QSOs on 160 and 80 meters. The major contests are over. The extra time to operate or build that results from decreased daylight and lack of yard work is rapidly fading (yes, there is at least one advantage to life in Northern climate!) Finally the “honey do” list of outdoor chores is growing fast. Now, the good news— hamfest season has begun. Dayton and the accompanying QRP-ARCI’s Four Days in May are only weeks away. The weather is much more friendly for QRP field activities. ARRL Field Day planning has begun in earnest, the season for growing antennas and towers has begun and we can finally put away the winter coats, hats and gloves! Just like taxes, spring is inevitable; so let’s take a look at some things a QRPer can do to take advantage of the season Spring Cleaning of the Shack. Start with your operating position. Clear the remnants of snacks, meals and liquid refreshment that have accumulated from extended hours of operating (especially contesting.) Dusting is best accomplished with a combination of soft cloths and small paint brushes (½ to 1½ inch are good sizes) and careful use of a small canister vacuum cleaner. You want to be careful not to scratch plastic displays, suck up small connectors or damage painted surfaces. |
Safety Check Even though it may have been safe when we installed it, all electrical devices need to be checked periodically for safety. This idea was driven home when I was dissembling my shack of 12 years and discovered that the rubber insulation of the 110 VAC power cord to my antenna rotor box had dried and crumbled off, leaving sections of parallel copper wires just fractions of an inch from contact with each other. Even scarier, they were close in contact with the metal legs of my operating desk! I would suggest checking insulation of all power feed cables (12 VDC & 110 VAC) and connections to equipment. Make sure there are no “pinch points” or sharp edges on the desk and equipment that can damage wire insulation. Don’t forget to check under the desk for damage to multi-outlets and/or surge protectors. Work Bench & Junk Box With the hamfesting season upon us, it is a good time to clean that workbench. This will allow you to gather up your surplus equipment, built kits and excess components and sell them. Conversely check to see what components or new equipment you need to finish that lingering winter building project, get on a new band or mode and/or just put aside a few spares (I always need more PL-259s and ¼ and mini plugs.) Tower and Antenna Supports Start with all ropes and guy lines. Check turnbuckles, clamps, knots and anchors. Check lines for damage or deterioration. Trim tree branches that can interfere with guys. Check bolts, nuts and other hardware of tower base connections. Visually inspect towers and rotors for damage. Use a pair of binoculars for this initial inspection safely from the ground. Whenever you have to climb your tower, take time to do an up close |
inspection. A thorough
inspection should be done at least once every three or four years
(this
can often be done in conjunction with the next step.) Feed Line & Antennas Feed Line, Coax Connectors Coax & can be damaged by wind, rain, ice and UV radiation. Connectors can become infiltrated with moisture. Periodic replacement of coax is necessary to prevent losing all of your precious QRP watts before they ever reach the antenna, let alone that station on the other side of the world. Special attention should be paid to weatherproofing all coax connections and pigtails. I recommend a combination of high quality tape, moldable coax sealing compounds, moisture displacement pastes and/or rubber boots. When checking antennas, pay particular attention to feed points and matches. Antenna traps can be very susceptible to damage by ice if drainage holes become clogged or are incorrectly oriented (insects can aid this clogging with spider webs and wasp nests.) Beam antenna’s elements can often work themselves loose with the aid of wind, ice and perching birds. Failing to check for loose elements cannot only result in loss of antenna gain, but can also become a very dangerous spear as they fall to earth. Get Outside; Enjoy the Weather and Operate Portable QRP. Spring is a great time to put together a “field kit” so you can operate portable for an emergency or just for fun. Contrary to the old saying, antennas put up when the weather is not lousy really do work. Use the spring and summer to experiment with and put up some killer antennas, because you know the good-old days of winter operating are just around the corner! |
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| Filling In Holes- Summer 2004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Gloom
and doom Recently, at the Dayton Hamvention, I overheard two different conversations between two pairs of hams. The first pair was discussing the approaching sunspot minimum. With gloom and doom in their voices they commiserated about the lean days ahead for DX. One even said, “I probably should sell off most of my HF equipment before the used prices fall too far.” The second pair of hams were seasoned DXers, you know the type, Top of the Honor Rollers. Again the topic was full of gloom and doom. The first one said, “there is not much reason for me to get on the air anymore. I have them all confirmed except three. Those damn islands have not been on the air in years and probably will not be on soon if ever again.” His friend replied, “You can say that again. All there is to do is read the DX tips sheets and watch the DX Cluster. Turning on the radio is a total waste of time!” What’s
wrong here? First,
Amateur Radio is supposed to be fun. Second, our speakers talk as if
they have
done everything there is to do in ham radio when in fact they are
focusing on
only a very narrow niche. When their focus is only on a narrow niche it
does
appear that they have done everything there is to do. But,
magically the
whole picture changes if we only take a short step back and look again.
With
our view no longer confined to a very narrow point, we quickly see a
vast
number of new things. It then quickly becomes clear that there are
still many
things to do and goals to accomplish. " I can see
clearly now..." |
The first is to try something new. Try a new operating mode, a new band, a new operating style (QRP, contesting, DXing, etc.), a new activity (home brewing, kit building, restoring boat anchors, fox hunting, APRS, etc.), a new public service (ARES, RACES, traffic handling, etc.) or a new ancillary activity (teaching ham classes, elmering, radio club officer, ARRL appointment, writing articles, etc.). There are many new possibilities and I hope you try many of them. In fact, many of you may have ended up here by deciding to try that QRP thing after burning out with QRO. The second path is to expand on something you already enjoy but with new goals and enthusiasm. I will describe this second path as filling in the holes. Filling In the
Holes Let’s use those seasoned DXers as our first example of filling in the holes. Sure, he has almost all of them worked and confirmed, but probably not on all bands or modes! So a very easy way to renew the enthusiasm of the DX hunt for a new one is to add new bands and/or modes for the ones he already has. Now with a new challenge at hand, there is a good reason to turn on that radio. Computerized logging makes it easy
to know what DX
band/mode entities are needed. For information on computerized logging
and
software that can benefit the QRPer, you may want to read my ARRL Web
column: |
Surprisingly to
many, even a modest
vertical antenna (I use a Butternut HF2V) on a small suburban lot can
allow the
QRPer to work both 80 and 160 meters. So give the lowest bands a try.
You will
probably have much better luck communicating with your QRP signal
during the
lower atmospheric noise seasons of late autumn through early spring. So
now,
during the summer months, is the time to plant some antennas for low
band use
this fall. I also have a recent article on the web: In addition to DXing, there are plenty of other opportunities to fill in the blanks. One of the most common and accessable is QRP WAS on multiple bands. A little planning and scheduling can pay big dividends when filling in the holes in WAS. State QSO Parties are a good source of both states and counties within those states. Field Day is another good opportunity to rack up the states, operate QRP from the field and prepare for emergency communications all in one event. ARRL’s Sweepstakes contests (CW and SSB) in November are also excellent times to work states. Being scheduled in late fall, this is also an especially good time to work states on 80 and 160 meters. In fact, I am hoping to complete my own 80M QRP WAS this fall. Worked all states and need another challenge? QRP USA-CA (worked all USA Counties Award) requires confirmed QSOs with all 3076 US counties. This award can keep even a busy QRPer occupied for a while! With all this talk of awards, don’t forget to checkout the excellent awards offered by our QRP-ARCI. Until next time, why not try filling in some holes. I think you will have a very good time. |
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| Sharing the Wealth-
Fall 2004 |
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| Wisdom Like Electricity “Wisdom is like electricity. There is no permanently wise man, but men capable of wisdom, who, being put into certain company, or other favorable conditions, become wise for a short time, as glasses rubbed acquire electric power for a while.”-- Ralph Waldo Emerson (1803–1882) The key to knowledge is the challenge to accomplish results. In my day job, I often teach people to use complex software programs with hundreds of features. Unfortunately, some of my trainees think I can open their skulls, pour in my accumulated knowledge and they will walk away as experts in using the software. I find that most people, including myself, are much more successful in learning when one of two situations occur-- they have a project that needs to be done or they are required to teach others. If you want to learn how to do something, having a project that you are passionate about greatly enhances the learning process. Even more effective is teaching the skill to your peers. Learning in a Vacuum Many of you may remember the hours you put into studying to pass or upgrade your license. Most of us also realize how much of that “knowledge“ vanished from our brains, starting even as we left the testing center. The concept of “Incentive Licensing” has already been debated ad nauseam. Whether you loved or hated it, one thing was very clear—studying material to pass a test had very little lasting effect. Now let’s take something you really wanted to do in amateur radio and we see a much greater retention of the material you learned to accomplish your goal. My Challenges for You As we approach the end of the year, I would like to challenge you to: 1. Learn Something New 2. Share Your Knowledge I have some ideas to get you started. Learn Something New The best way is to first identify a new ham radio activity or skill you would like to try: I’ve mentioned many examples in my previous columns (try a new operating mode or band, build a rig or accessory, experiment with new antenna designs, prepare yourself for emergency communication by taking the ARRL course, etc.) You can further enhance the project and your learning by working together with a group of hams. Share the Knowledge In the “olden days” there were really only two ways to share the knowledge— in person or by writing for magazines or books. Today, the Internet has provided a third, highly accessible, means. · Elmering- One of the greatest gifts a ham can give back to the hobby is to act as an Elmer. ·
Teaching a Licensing Class- Be a public speaker. Provide programs for local organizations and/or put on public demonstrations of Amateur Radio for fairs, schools, etc. ·
Writing- Write articles for your local radio club’s newsletter or for a ham radio magazine (Especially our own QQ). ·
Publish Writing a book and getting it published was once a fairly difficult task but with today’s software and duplication equipment, a self-published soft cover book or booklet is quite a viable endeavor. ·
Create a Web Page |
You may have heard that web sites are expensive, hard to maintain and require learning all that HTML stuff. The good news is that these are all myths (usually put out by people who want to impress you with their own web site or want to charge you to design and build your site,) You can create a site for free thanks to Alan L Waller, K3TKJ and his free hosting of ham radio web sites at http://www.qsl.net. He got myself and many, many others started in producing our first web sites. Alan's work is a real gift to the ham community. To learn more, stop by http://www.qsl.net. Then start your own ham radio website and make a donation to help support his fine efforts. If your site outgrows QSL.net, you can find hosting companies that will host your website and even let you register your own domain (i.e. www.yoursite.com) Rates starting at under $7 a month are easy to find. Do a web search for web site hosting. There are also other “free” site hosting offers but most carry advertising on your pages and require you to use their domain (i.e. www.geocities.com). Creating Web Pages No need to know HTML coding to build your first site. If you can word process, you can build a web page. Free, easy to use, WYSIWG software called Composer is available from www.mozilla.org. I built all the pages on my site using Composer. If you want to create more complex pages, Macromedia and Adobe make excellent (but not inexpensive) software called Dream Weaver and Go Live respectively. The learning curve can also be fairly steep on both of these products. A very popular in-between product from Microsoft is Front Page (personally not my favorite as it often uses proprietary coding schemes and results in “bloated code”.) Try the free Composer first and save yourself the time invested in the steep learning curve and some cash. Content, Content, Content The main reason that I suggest that you keep the page creation simple is so you can concentrate on the content. If location is everything in real estate, content is everything in getting return visitors to your web site. If you build it and it provides users with information they can use, they will come! If you want them to return, make sure you keep content up to date, useful and dynamic (adding new content frequently.) Five basic content varieties include: links to other sites, original content, content from other sources, databases and interactive forms. Links to Other Sites Links are a way to direct users to helpful information at other web sites. Successful linking is dependent on selecting and grouping helpful sites. You need to visit sites you plan on linking to and evaluate each site’s content. Ask yourself the following questions: · Is the information accurate and kept up to date? · Does it fit in with other sites you are linking to? · Does it provide important information for a visitor to your site? · Is the content already well represented in your other links? · Does it fill a void in information lacking in your other links Finally, frequently check the links from your page to make sure they are not “broken” (is the other site still online, is the address still correct, and is the content still relevant?) Original Content Links are good, but what if everyone had web sites full of links to other sites and no content of their own? That would be like everyone listening and no one calling CQ, resulting in no QSOs. Original content does not have to be prize-winning prose. Examples of content can be: simple lists of information, equipment photos, illustrations or schematics, the step by step description of how you solved a problem, built a better mouse trap, successfully modified a piece of equipment, descriptions of antenna projects, etc. |
You didn’t invent the resistor
color code but
having a handy copy on your web site can be very useful for someone who
has
forgotten whatever little mnemonic device they used to learn the color
values.
Do you have a friend who has plenty of information to share with the
QRP
community but doesn’t want to create their own web site? Your local ham
radio
club’s newsletter editor might have plenty of content to share. Don’t forget about information/instructions for older equipment that many users may no longer have manuals for. Whenever you use content from others, make sure you obey all appropriate copyright laws. If you would like to reproduce material from another person’s web site instead of linking to it, contact the owner for written permission to use the material (this also includes photos and illustrations.) Databases Databases are collections of information in a user searchable format. Callbooks, QSL Managers and Online Log Books are some examples of popular databases on Amateur Radio web sites. Uploading of new data may be automated (daily download from FCC ULS) or manual (the web master has to upload new information or databases). In some cases, user input is possible (a common example is the ubiquitous online opinion polls). Databases usually require more sophisticated coding then your average content page. Those with programming experience can often easily make the jump. Fortunately for the rest of us, many of the higher end webs designing packages have the ability to build interactive or database pages or we can acquire turnkey online database systems. Interactive Forms Similar to databases, interactive forms allow the page users to add or exchange information with the page owner or other users. One simple example is “Guest Books”. Online forums allow users to post questions and answers to each other and other page visitors. Even simple guest books can be adapted to other tasks. Last year when my local radio club ran a year long special event call sign for the Ohio Bicentennial (KO8HIO), we needed any easy way to know when someone else was using the call sign and what band they were using. Stations would leave a guest book entry stating starting time and band before transmitting. Before beginning operation, each station would check the online guest book to see if the call sign was in use. When an operator was finished, he would enter QRT or QSY information in the guest book. Again, there are ready to use interactive coding page examples - or scripts - as they are known. You can check my web site for links to sources of free or inexpensive scripts. Web Site Style and Design Your can let your imagination go wild with colors and graphics when designing your own web page. Unfortunately, a lot of the resulting pages can be hard on the eyes, difficult to read or very slow to load. I could fill the entire QQ with design suggestions (fortunately my editor will not let that happen.) My suggestion is to visit a number of web sites and find examples of styles that are easy on the eyes, easy to read, aesthetically pleasing and fast loading. My top five suggestions are: 1. Use page and text colors that work well together 2. Avoid using excessive or difficult to read fonts 3. Control page layout by using tables and/or frames 4. Avoid pages that require the user to scroll right or left when reading 5. Optimize file size, resolution and quantity of graphics to avoid slow loading pages. Static is Bad Always remember, you are writing a
web page not a
book, so there is no final copy. Web sites should always take advantage
of
their strongest point - flexibility. Revise, correct, update and add
content
frequently! |
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| Cat-nection- Winter 2005 |
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Too Many QRP Radios, Too Many Wires, Too Many Connectors and Too Little Time! After 23 years as a ham, the confluence of a number of my character traits has contributed to an ongoing problem. I am sure that many of my fellow QRPers might have many or all of these traits: · Gathering and hoarding all things electronic · Addiction to Hamfesting · Can never pass up a good deal or trade for a QRP radio · Uncontrollable urge to try out any new commercial QRP radio · Enjoy the smell of melting solder while assembling the latest QRP radio kit. · Thrilled with the chase of more QSOs (compounded by DXing and Contesting) Throw in a little ADD (Attention Deficit Disorder), an uncontrollable need to multitask and too little time and my problem is complete. I have acquired too many QRP radios and I want to be able to operate them all with minimal hassle and setup time when switching from one to another.Setting Up a Radio to Operate You know the drill: 1. Connect the power supply (oops, need a different connector!) 2. Disconnect your key(er) from last radio and plug into new radio (oops, I need an adapter from ¼ ” to RCA plug!) 3. Disconnect your headphones from last radio and plug into new radio (oops, I need an adapter from 1/8” to ¼” plug!) 4. Disconnect your antenna coax from last radio and connect new radio (oops, I need an PL-259 to BNC adapter!) 5. Don’t forget your favorite accessories- outboard AF filter, PSK-31 interface, voice keyer, etc. and of course the required adapters! Cat to the Rescue We are not talking about Fluffy, Kitty, Felix, Garfield, Sylvester, Fritz, Catbert or any other famous feline (www.citizenlunchbox.com/famous/cats.html). We are talking about Cat-5 also known as Category-5 network cable. Cat-5 is ubiquitous, inexpensive and easy to work with. An inexpensive crimper and cable ends result in easy termination or you can buy pre-made cables with attached ends. The other main component is an inexpensive RJ45 4-way computer switch box for Cat-5 cables.
Wiring the Cables The idea is to make a Cat-5 cable for each different radio in your collection. Each cable has a RJ-45 connector on one end and various connectors that match the radio on the other end. If you do not want to invest in a cable crimper, simply buy pre-made cables twice the desired length then cut in the middle to make two cables with one end terminated in a RJ-45. Once you have your terminated cables, you need to collect and install the appropriate connectors for the specific radio. Connections will include audio out (headphone jack), audio in / push to talk (microphone jack) and key(er) (keying jack). To make things easier, the color codes of the wire pairs of the Cat-5 cable are used to identify each connection. Use your rig’s wiring diagram to determine pin outs of the connectors to the radio. Before soldering on the connectors, use heat shrink tubing, wiring spaghetti or small diameter clear vinyl hose to group the wires for each connector together.
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The main construction portions of this project are the additions to the RJ45 4-way computer switch box. These additions will allow us to connect the necessary accessories to the selected radio via the switch box. The layout will vary from user to user depending on desired connection and equipment types. Typical connectors include: ¼” and/or 1/8 “ stereo jacks for keyer, headphones, speakers and PSK-31 and other sound card interfaces; round microphone jacks for each brand of mic you would like to use or square modular jacks for newer microphones; DIN connectors for multimode controls or TNCs; coaxial power connector and on/off switch for supplying 5 volt DC to some microphones. I used Visio* software from Microsoft to design the case layout. I created panel labels and drilling guides using the software. If the front panel is crowded with number of connectors you can move or add connectors to the side or rear panels of the case. The drilling guide was temporarily attached to the case using rubber cement. All holes were center punched then drilled using a Unibit step drill bit. Alternatively, if you have them, you can use chassis punches for an easier and neater job. If you need square holes the job becomes a little more difficult but can be accomplished by first drilling a round hole then filing and/or using a saber saw with metal cutting blade. Once all the holes are completed, remove the paper drilling guide and use a file to smooth sharp edges. Print the panel labels on heavy paper stock in your chose of color(s). Cover the paper labels with clear contact paper or if you have access to a laminator, laminate the labels. Apply the panel labels with adhesive (I have used the 3-M spray-on adhesive, but you can use a variety of adhesives). After adhesive has dried, use a sharp bladed knife to cut out the label materials covering the holes in the case. Mount the connector hardware in the holes (microphone jacks, ¼ jacks, etc.). Depending on the connectors used and tight spaces in the case, it might be easier to solder small lengths of hook-up wire on the connectors before mounting them in the case. Wiring the Case Everything is wired to one of eight common connection points (buses). An easy way to accomplish this is by using prototyping grid perfboard with one row of holes for each of the eight connecting points. Decide on the number of connections needed, then trim the perfboard to fit in the case. Label the rows of holes 1 through 8. Working with one wire at a time to avoid mixing them up, cut the wires going from the switch to the RJ-45 jack labeled I/O or Common. Solder both of the cut ends of each wire to the row of holes in the perfboard being used for that numbered connection. Repeat with the remaining 7 wires. |
Using hookup wire from the connectors (microphone, headphone, keyer, TNC, Rigblaster, PTT foot switch etc.) solder to the appropriate rows 1 through 8. <>When you are done soldering the wires from the connectors, use a VOM to test all connections. Make sure the correct pins of each connector have been connected to the proper bus. After everything checks out, you can mount the perfboard to the case with a spare computer standoff bolt.Other Connections So far we have not addressed two important connections to our rigs--antenna and power. Fortunately, a number of off the shelf products you may already own address these needs. Antenna switches have been around for a long time. In making your choice, look for a high quality switch with maximum isolation between the individual inputs and outputs. I had long ago standardized the ends of all my power cables with Anderson Power Pole connectors. Now that many ARES/RACES groups have chosen the Anderson connectors as their standards, I can definitely recommend them to all hams. New power distribution boxes with Anderson Power Pole outlets make it easy to connect all of your radios to a suitable power source
Using Your Cat-nection I would suggest a few operating tips to prevent problems and or possible damage to your equipment: 1. Power all radios off before switching the Cat-nection box. 2. Power up the desired radio after switching has been completed. 3. Use care in the placement of spare microphones and keys to prevent accidental keying by contact with clutter on your desk. One suggestion is a small wooden stand with hooks for all the microphones not in use. 4. Grounds are used for multiple purposes; if you encounter “ground loops” try switching to a different ground wire from the set for that connector. 5. Devise a “reminder” to be sure you have switched the antennas to the new rig before keying it. Gimmicks could include a hanging badge or marker on one of knobs of the rig with the live antenna connection. You can use a small cover for the power switch on all radios that is removed only when the antenna has been attached and then replaced when the antenna is disconnected. Of course you could get even more sophisticated with an antenna switching relay system wired into the Cat-nection switch. As a minimum, get used to always listening for stations on the band before tuning or transmitting. 6. Clearly label all radio specific Cat-5 cables with the name of the radio. 7. If four radios connected at one time is not enough to support your collection of rigs, you can quickly switch cables at the RJ-45 jacks
Modify to Your Needs I have described a simple rig connection switch; you can modify or add to the design to meet your needs. Possible additions could include a built-in volume level control for headphones; an integrated audio amplifier to drive speakers, opto isolators or isolation transformers to prevent possible voltage spikes and or ground loops. You can add a regulated 5-volt DC supply for microphones requiring power and even a built in keyer for your rigs that do not have an internal one. If you need connections to special devises, remember you can make custom outgoing cables to plug into the RJ-45 jack labeled I/O which is connected into all 8 buses.
* I will post the Visio file of my panel layout on my web site. You can download and modify it for your needs. To edit the document, you will need a copy of Visio. Fortunately you can download a free 30-day trail version of Visio from Microsoft at http://www.microsoft.com/office/visio/prodinfo/trial.mspx |
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| TOP SECRET: QRP
Tips- Spring 2005 |
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Top
Secret: for QRPers Only I am going to share a few secrets with you, but you have to promise not to share them with the QRO crowd. So place your hand on the Altoids tin and swear “I will not share anything read here with non-QRPers.” Why is this column top
secret? Well, I am going to tell you some ways that you can
successfully
compete with the kilowatters in getting contacts. If these were to fall
into
the wrong hands, you might not stand a chance in that next pile-up. Following are some tips that
have worked for me and other QRPers over the years. Sometimes you might
use
just one, other times you may find combining two or more brings
success. The
tips are divided into three main groups. 1)
Timing-
·
Be There First Probably
the most effective technique for making contacts is to be the
first station to hear and then be heard by the target station. The way
to do
this is spend quality listening time on the right bands at the right
time (plus
luck). ·
Be The Only One
There Even rare DX
stations or busy contesting stations
have slower periods. Your task is to be there then. When exactly are
these
times: the last portion of a contest, just when the band is beginning
to open
or close, when a station has just QSYed, when a contest station is
fighting
another station for the frequency and the random times (found by
listening over
a long period of time for just that right minute.) ·
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2)
Be Heard Above the
Din- ·
Make Sure Your
Signal “Sounds Good” CW- make sure your keying waveform is optimal with
no key clicks.
Use a quality keyer with paddles/keyboard and make sure they are
adjusted
properly. Use good spacing and character weighting. Match your speed to
the
other station’s sending. Phone- use an effective microphone. DXing or
Contesting mic elements place emphasis on a specific range of
frequencies that
can make your signal stand out. Use speech processing properly and/or
sparingly. ·
Be On the Right
Frequency Learn how
to zero beat the other station’s signal. Sometimes you need to be on a
different frequency than that of the target station. Listen to the
stations
that are being worked and zero beat them instead, then use your RIT to
listen
to the target station. You can try varying your frequency slightly
above or
below the crowd to make your signal stand out. ·
Speak the
Language of Your Target Learn a
few key words and numbers in the
native language of the operator
you are trying to work. http://www.k8zt.com/racg/racg.html. |
Choose The Right Call Sign You may want to use the vanity call sign system to select a new call sign that is more effective in being heard and correctly copied by others. http://www.k8zt.com/vanity_callsign.html. 3)
Operating- ·
Get on the air! More time on the air can
definitely increase your chances, especially
if you know when and where to hang out. ·
Know Your
Equipment Read the
manual and learn the operation of all the
features of your rig(s). I know this might seem like a waste of time,
but
believe me when you want to work that rare DX station and it is the
last hours
of operation just before they leave the island and they are working
split and
you not sure how to do it with your rig you will care! Pay special
attention to
sections on: working split, RIT, XMIT, filter selection, DSP, mic
gain and
speech processor. ·
Learn From
Others It is very
helpful to listen for effective
operators and then mimic their style. Even better is finding a person
or group
of operators that you can observe in action in person. Field Day and
other
multi-operator events are good chances to learn from others. ·
Experience a
Pile Up From the Other End It is very eye opening to be on the other side
of the pile up.
You quickly learn which stations stand out in the crowd. You get to
hear the
whole range from very good to very bad operators. Although it can be
prohibitively
expensive for many hams to travel to a rare DX location, there are many
other
ways to get on the other side of a pileup. You can be the operator for
a
special event station, travel to a rare state for ARRL Sweepstakes (DE,
ND, WY,
SD or VT), travel to a DX country close to home XE, C6, CY0, CY9, FP,
etc. or
drive to rare CQ Zone 2 for the CQ World Wide contests. ·
Practice,
Practice, Practice
I know it sounds trite, but the best way to become
an effective operator is to practice. See what works and improve or
change
things that don’t work, then practice some more. |
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| As Easy as Uno, Dos, Tres - Summer 2005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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As Easy as Uno, Dos, Tres … In the last QQ I shared a few QRP operating secrets with you. I have had a few e-mails asking for more detail on some of the techniques I described. One question concerned the technique:
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I
am
definitely not an expert on foreign languages - a statement with which
I am
sure my high school teachers and college professors would definitely
concur! Fortunately, you and I do not need to be a fluent foreign language speaker to help us bag exotic QRP DX. Probably the most bang for your buck involves “learning” the names for the numerals in call signs, especially your own. Unlike your high school language class, this will be an open book exam. I have produced a simple chart with the digits 0 to 9 for 14 of the 20 most common languages you will find on the air. |
You can
simply cut out or copy the accompanying chart and tape it to your
operating
table. In addition, I have two electronic versions available on my
website at
www.k8zt.com/ racg/racg.html.
The first version is a PDF file, with 20 languages, that you can print out. The second version is an online spreadsheet that will automatically “translate” your call sign into 20 translations with local phonetics and numerals. At the same site, you will find a number of other language resources featuring the full text of The Radio Amateur's Conversation Guide by Jukka Heikinheimo, OH2BR/OH1BR and Miika OH2BAD. The book is now out of print but the authors have generously allowed me to post the entire text online. Supplemental materials include a variety of PDF, HTML and spreadsheet tables of foreign letters and numbers. |
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| In a
QRP State of Mind- Fall 2005 |
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This month we take a look at ways for QRPers to complete their Worked All States (WAS) for the first time or on a specific single band or mode. A long time ago or a future task Many of us older QRPers worked our 50th state years ago, but many of those new to QRP are still working on the task. Even for those who long ago worked their 50th state with QRP, most have not done it on all bands or all modes. Here are six good ways to accomplish either task, working the 50th or completing an individual new band or mode WAS: 1. Spend a lot of time on the bands and you will eventually work them all 2. Use the assistance of a WAS Hunting Net 3. Use other nets that are not designed specifically for WAS 4. Operate in contests that primarily have domestic stations as eligible contacts 5. Operate in QRP Club contests 6.
Operate in the large variety of State and/or Regional
QSO Parties Spend a lot of time on the bands and you will eventually work them all. Maybe its is
not the fastest or
most efficient, but it is a great way to do it. By the end of their
days on
earth, I think few hams would ever say that they spent too much time on
the
air. So get on the air often and spend some quality QRP time! Use a WAS Hunting Net. Nets can be a lot of fun and you can make many new friends; but it is just not my cup of tea when I am trying to accomplish a personal goal of WAS or any other “working them all” type activity. I just don’t feel that I have really accomplished the goal when it was not really my effort but that of a net |
controller or net members. It may be your cup of tea, if so, enjoy and don’t forget to hang around after your goal and help new net members meet the same goals you have.
Again if you like nets, there are indirect ways to get your WAS. Examples include County Hunter Net, Traffic Nets, ARES Nets or any of a wide variety of specialized nets including fans of a specific piece of or type of equipment, a favorite mode or band (i.e. Ten Tec Users Net, Elecraft Users Net, Boat Anchors Net, AMers net, etc.) This includes a variety of highly recommended QRP Club nets (www.w0ch.com/nets/nets.htm). Operate in contests with domestic stations as eligible contacts. Big
domestic contests such as the ARRL’s November Sweepstakes, offer a
plethora of opportunities for new
states on a variety of bands, all in weekend. Other suitable activities
include
ARRL’s Field Day, the ARRL
RTTY Roundup, the North American QSO Parties, the NA Sprints, etc. For dates of
scheduled contests visit WA7BNM’s Contest Calendar
and/or SM3CER’s Contest Service Operate in QRP Club Contests. Double your fun. Not only can you work needed states but you can also make a number of QRP to QRP QSOs while supporting our niche of the Amateur Radio world and its wonderful QRP Clubs.Operate in the large variety of State and/or Regional QSO Parties. There is nothing like going directly to the source for your needed states. Try operating in the State and Regional QSO Parties. See the chart below for a selection of QSO Parties and visit the two Contest Calendar sites above for more information. |
Need more of a challenge? If you have already finished WAS on a number of bands, there are still challenges. How about those low bands (80 & 160 Meters), the WARC bands (12, 17 & 30 Meters), the new 60 Meter Band or even some QRP VHF on 6 Meters? Don’t forget the individual modes for WAS-- CW, SSB, RTTY, PSK31 and other Digital Modes, Satellites, etc. My personal goal for this for this winter is to finish QRP WAS on 80 and add to my 160 Meter QRP total. |
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| The Argonauts- Winter 2006 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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With the sad news of Al Kahn, K4FW’s death last year, I thought it might be a good time for us to explore the entire family of Ten Tec’s premier QRP radio, the Argonaut and its relatives. * The fact that many QRPers around the world still treasure their Argonauts is a fitting tribute to Al’s fine design and contributions to Amateur Radio and QRP.
From Bulfinch’s Mythology-- in ancient Greece, “…it was suggested to Jason that he undertake the glorious adventure of going in quest of the Golden Fleece. Jason was pleased with the thought and forthwith made preparations for the expedition. At that time, the only species of navigation known to the Greeks consisted of small boats or canoes. When Jason employed Argus to build him a vessel capable of containing fifty men, it was considered a gigantic undertaking. It was accomplished, however, and the vessel was named Argo, from the name of the builder. Jason sent his invitation to all the adventurous young men of Greece, and soon found himself at the head of a band of bold youths, many of whom afterwards were renowned among the heroes and demigods of Greece. They were called the Argonauts , from the name of their vessel…” Similar to the Argo’s simple predecessors, the Ten-Tec Argonaut radio series predecessors consisted of small homebrew and kit QRP radios (often single band, separate transmitters and receivers and predominately CW only.) The first Ten-Tec Argonaut was a milestone in QRP radios, combining both receiver and transmitter into a solid state, CW and SSB, multiband transceiver. Jason’s Argonauts’ travels were an Odyssey (noun- a long wandering or voyage usually marked by many changes of fortune). The Ten-Tec Argonaut series has also been an Odyssey, with five generations and a few tangential relatives. This month’s column will explore the Argonaut line and its lineage. Let’s
start at the very
beginning— In 1957 WA6AVA built a rig called the “SSB Argonaut” for Ted
Henry,
W6UOU who sent it around the world in an effort to give many DX
stations an
opportunity to put their country on the air with the then new mode of
SSB (CQ
Magazine, May 1960). But this is not the Argonaut of this article. The
radio we are interested in was described in the November, 1971 CQ
Magazine
article entitled “The
Second Coming of the Argonaut”. In 1968 by Al Kahn, K4FW, and Jack Burchfield, K4JU founded Ten-Tec. In 1969 the company produced a series of modules that hams could use as building blocks in assembling a solid-state QRP CW radio. These modules were also used as the basis for Ten-Tec’s Power Mite (PM) series of solid-state CW transceivers. The PM series was available in three main models (PM-1, PM-2 & PM-3) and variants with added bands and features.
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The VFO was
designed around a permeability
tuned coil oscillator (P.T.O.). As the user changes frequency, a
threaded shaft
moves a powder iron core into a coil. This changes the inductance of
the coil
and thus the frequency. The final amplifier was a broadband design that
required no tuning as the user-changed bands, an almost unheard of idea
in radios of this era. An
advertising flyer by Ten-Tec (www.k8zt.com/tt_ads_70s.html ) summarized
it as
“all the features you want in a 6 pound package of 1/5 cubic foot.”
509 Our second Argonaut, the 509, debuted in 1973. With its eggshell white front panel, black lettering and wood-grain laminate top and side panels, the 509’s appearance was almost identical to the original Argonaut 505. Enhancements include a “hotter” receiver. Retail price was $329. The Argonaut 509 had the largest production numbers and can be a very good used purchase for the beginning QRPer. Used prices range from $100 to $275 range depending on condition.
For the potential used radio
buyers out there, all
three of the first generation Argonauts can provide a reliable and
inexpensive
introduction to both CW and SSB QRP. Two items may need maintenance on
these
series of rigs. The first is the main dial cord. The cord has an
elastic
portion which ages and stretches over time. Symptoms of this problem
include a
drooping dial pointer or uneven movement. Replacement dial cords are
still
available from Ten-Tec and are very inexpensive. The replacement job is
not
difficult, but it is time consuming because you have to remove the
entire front
panel and all the knobs. The other problem you may encounter is the
“sticky PTO syndrome”. The
grease used in the PTO mechanism hardening overtime causes this. Again
a repair
kit is available from Ten-Tec. Although commonly reported as a problem
on
various mailing lists, in my personal experience with a large number of
these rigs, I have found it to
be an infrequent problem if the radio is used regularly.
535 Argonaut-II The fourth Argonaut was called the Argonaut-II or Argonaut-535 and did not arrive until 1991. In the interim, many QRPer’s had turned to the Ten-Tec Argosy (525 and 525-D), but that is a story for another day. The Argonaut-535 was a radical change from previous Argonauts. It was a frequency synthesized rig with digital display, dual VFO, split frequency operation, 48 memories, computer control port, general coverage receive and keyboard frequency entry. An innovative filtering system, known as Jones filtering, allowed for front panel adjustable variable bandwidth and pass-band filtering. |
The radio was
basically a twin to
the
Delta-II (536) minus the higher power output amplifier (5 versus 100
watts).
The rig was very innovative and can still hold its own in features
comparable
to many current production radios. A less than glowing review
by ARRL, atypical filter operations (for the time) and a relatively
high
retail price of $1445 may have contributed to less than stellar sells.
I purchased
one used a few years later and my experiences have been very positive,
but on
occasion I personally have accidentally mis-adjusted the filters and
was greeted
with what
I thought was a dead band or radio. Once you get the filter adjustment
process
down, the rig is a good performer. If you go shopping for a 535 or 536
be aware
that there
have been some problems with the
luminescent panel used for backlighting burning out. The radio’s
computer
control scheme is the same as the Icom 735 so most logging software
programs
support it. In the almost ten year interim between Argonaut-535 and
Argonaut-516 many QRPer’s turned to Ten-Tec’s low power version of the
Scout.
Although this radio is often referred to as the Argo Scout 556, it
really is
not part of the Argonaut family.
516 Argonaut-V The current and fifth Argonaut is the Model 516 Argonaut-V. It was introduced in fall of 2002 with prices starting at $795. The 516 is not strictly QRP as power output can be varied from 1 to 20 watts. The Argonaut-V follows in Ten-Tec’s recent trend of “software defined radios” such as the Pegasus, Jupiter and Orion (Although the 6N2 Model 526 shares the same case and chassis design and DSP with the Argonaut-V, it does not have a serial port for user upgrade of ROM.) In a software-defined radio most functions and features of the rig are stored in Flash ROM. To add new features, you upload new software to the flash ROM or as Ten-Tec says “… and it's as if your rig rolled off the production line a few minutes earlier.” When the 60-meter band became available for amateur radio use, it was a simple matter to have the transceiver ready the day the band opened”. The 516 makes extensive use of digital signal processing (DSP) for filtering and bandwidth shaping. Very similar in appearance and construction to the 526, the Argonaut-V is the third major style change in the Argonaut series. The designers made access to digital modes very easy. Simply connect audio cables from the audio in and audio out jacks to your PC sound card and you're ready to do PSK-31 and other digital modes without the need for an interface or adapter. The Argonaut-V has dual VFO’s, split frequency operation, memories, built in keyer, transmission on all amateur bands 160-10 and general coverage receive from .5 to 30 MHz. Operating modes include CW, SSB, AM, FM and digital modes. CTCSS tone encoding is built in for 10 meter FM operation or for use with transverters to cover VHF and above. The same port is used to update the radio’s flash ROM and also allows computer control of the radio with suitable software For Argonaut and Ten-Tec
resources on the web you may want to visit Joseph Edmonds, N4NQY’s
Unofficial
Ten-Tec Pages and Paul Valko, W8KC’s Virtual Ten*Tec Museum (I have
links for
these and other Ten Tec resource sites at www.k8zt.com/tentec.html)
* Much of the
material in this
column comes from my original article
on the ARRL website.
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| Upgrading This Old Shack- Spring 2006 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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In this issue I want to discuss how I fixed up my shack and what you can do to make your shack a more inviting place to spend quality QRPing time.
Shipshape Shack I first heard the term “Shipshape Shack” back when I first got my license and started to attend meetings at the local radio club. It had a nice ring to it. Basically club members cleaned up the clutter, fancied up their radio shack and had the club photographer come by to capture the moment. Periodically the photographer would have a slide show for the club to ooh and ahh the photos of the proud owner of each shack. They also liked to poke fun at fellow members about what the shack really looked like when the photographer was not scheduled to arrive. The other side of the picture was the messy shack contests I have seen over the years in a number of ham radio magazines. There sat the proud(?) owners just one slight tremor away from a potentially fatal avalanche. For years, my shack leaned more toward the messy than the shipshape. Relegated to a small dark corner of the basement, operating often meant moving stacks from spot to spot to clear an area in front of the rig. So when the time came that we were in the planning phase of adding onto our house, I suggested to my wife Linda, KA8ODP, that I would like to move my shack upstairs into the new room. The reaction was cold to say the least. At last, after some cajoling and promises to keep it neat, my wife finally agreed but with the stipulation that if it turned messy it would be evicted back into the basement. Well the good news is that it is over five years and I have not been banished to the basement. What follows are some ideas that might work for you. Divide and Conquer My biggest
trick was to separate my old shack into two parts. Part one was the
operating
station, accessories, logging computer and everything needed to
operate. This
part of the shack would move to the new room. The second part was the
“workbench” part of the shack including soldering station, spare parts,
project
rigs, test equipment and the well-known “junk box”. The second part
would
remain in the basement, out of site of most houseguests. New Shack Furniture The next step was to get a few “nice” pieces of furniture to use for the new shack. Fortunately, you do not need to spend a lot of money. With the plethora of consumer computer desks/hutches now commonly available, there was a large selection to choose from. My recommendation is a corner unit. By placing the computer in the center you actually have two separate potential operating positions, one on each side. With a few visits to office supply stores, patience in waiting for sales and rebate offers kept the total expenditure pretty low. The next item on the shopping list was some shelves to add more space by going vertical. You have two options here. Go with a desk with a matching hutch (usually more expensive and the shelves are usually spaced wrong for your equipment) or go with an inexpensive set of laminate covered pressboard shelves (I suggest the thinner, lighter-weight variety). |
The shelves are easy to modify to fit by
trimming
width and/or height (often you can take one set of tall shelves and
divide them
into two shorter units). The overall goal here is to have a place for
everything
you plan on keeping in the new shack. The final furniture purchase is a
comfortable adjustable office chair that makes sitting through long
contests
possible. I found that price or style were often poor indicators for
the most
comfortable and versatile chair. Instead, you need to try a large
number until
you find the one that fits just right (usually you will quickly know it
is the
right one when you take a seat and it feels just right).
The next step is to make sure you have sufficient electrical outlets located at the proper spots and an easy way to neatly route the coax leading to your antennas. Luckily I was in the process of building the new room, so I was able to plan these in my construction plans. I was able to provide outlets where I wanted them and even to run a separate, dedicated line directly from the electrical box to the shack. For feeding coax into the shack, I placed empty electrical outlet boxes with conduit going to the basement where the coax cables enter my home. I then used solid outlet covers with holes drilled in them to neatly accommodate the coax. Even with the pre-planning, I made one mistake that you can avoid in your design. I should have gone with a much wider diameter conduit to allow not only the coax cable to pass through but also the coax cable with the PL-259 connectors installed! Due to this mistake, I now have to remove connectors to change the cables and then reinstall the connectors, which is a drag. My Little Corner of Heaven Placing the shack in a corner has a number of additional advantages. Even though I wanted to be out of the basement and with the rest of the family, facing the corner tends to provide a little privacy and even muffle my voice a little during those SSB QRP contest. To add a little more sound suppression, I put together two sound absorbing panels. These were another inexpensive do-it-yourself addition. I started with two 4 x 8 foot, one inch thick Styrofoam insulating sheets from the local building supply store. The two most popular brands are not the most attractive colors (pink or blue), but don’t worry, as the next step will make them look like expensive commercial cubicle dividers. Visit your local sewing center and select fabric with your choice of color (I found that grays, browns and beiges looked best and that a slightly textured surface made the installation process less critical than using a smooth or glossy fabric). While you are out shopping, find a crafts or art department and purchase one large or two smaller aerosol cans of adhesive (such as 3M High Tack Spray Adhesive #76 or #77). Depending on the size of your shack, you can use the full 4 x 8 foot sheets or trim them to match your wall area. Measure and cut cloth to cover the insulation sheet with a few inches to cover the edges and wrap around to the back. In a very well ventilated area (I suggest outside the house) spray the adhesive on the foam and then position the fabric (make sure if it has a pattern, that you have it oriented correctly). Using a clean dry wallpapering brush, smooth out the fabric working from the center to the edges. Make sure you smooth out any bubbles. Wrap fabric around the edges and glue to the back. Use a staple gun, (not the desktop variety stapler) to hold it in place while drying and add additional holding power.
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After
everything is thoroughly dry (and the adhesive smell has dissipated),
you are
ready to mount to the walls. Mount with the 8-foot side horizontal,
centered a
few inches from the top of the desk and the ceiling using drywall
screws into the
studs or using wall anchors in drywall. Use large washers (I found
large black
plastic faucet washers looked nice) to prevent pull-through
Now
that you have
created your echo suppressor, there is the added benefit that it can be
used as
a bulletin board where you can post maps, QSL cards, certificates, etc.
with
pushpins. Keeping it Shipshape Make sure you keep your new shack only for operating, move all those projects to that workbench area.If you don’t
have room for a dedicated workbench, see my web article-- Keep it dust free. Inexpensive dust covers designed for computer equipment, hand made cloth covers or commercial custom monogrammed cloth can help to keep the dust off your equipment. For those who forget to use dust covers, a small clean soft paintbrush can work wonders cleaning around the knobs and other tight spots on radios. To minimize
the clutter of loose pages of paper you use often when operating such
as band
plan, net frequency lists, azimuth map, etc. a sheet of clear plastic
(from the
window glass section of your building supply store) keeps them in place
and
safe from damage by your favorite beverage.
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All pages of
the web site www.k8zt.com
are copyrighted (2001-2005)
by the author Anthony A. Luscre and all
rights are reserved.
Please contact author for permission to use
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