Author Archives: Bob K0NR

VHF Distance From Pikes Peak?

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I recently received this question via email from Dave N0MUA:

Bob, I ran across your pictures mountain topping on Colorado peaks, thought if anyone could answer this it would be you and your group.  We run on 146.52 here in Coffeyville KS.  and a group of us have brought up the question how far east can a mobile atop Pikes Peak be heard on 146.52 FM? The mobile would be mine running a Icom V8000 into a Tokyo HI power amp at 375 watts  LMR 400 coax to a Cushcraft 13B2 beam pointing to the east.

This is one of those how far will my signal go? questions that always gets my attention. Other folks may find this interesting, so I decided to spend some time on the topic and post it here. I am assuming we are talking about tropospheric propagation and not something more exotic such as meteor scatter or sporadic-e skip.

The (incorrect) conventional wisdom is that VHF propagation is “line of sight”, extending a bit beyond the optical horizon. From Wikipedia, we find that the distance to the optical horizon can be approximated by:

d = √(1.5 h)

where d is the distance to horizon in miles, h is the height of the observer above ground in feet

Pikes Peak reaches to 14,110 feet above sea level. The elevation of the surrounding area varies but since Dave is asking about propagation into Kansas, let’s use a typical elevation of eastern Colorado (4500 feet). This gives us an optical horizon equal to the square root of (1.5 x 9610) = 120 miles. Yes, this is an approximation, so feel free to knock yourself out with a more precise calculation.

It is interesting to note that there is a community 30 miles west of the Kansas border called Firstview, CO that is supposed to provide the first opportunity to see Pikes Peak when traveling from the east on Highway 40. Firstview is about 135 miles east of Pikes Peak, so the 120 mile calculation is in the right ballpark.

The ARRL web site says that the radio horizon is about 15% longer than the optical horizon, so that means our line-of-sight radio horizon is about 1.15 x 120 = 138 miles. I’ve operated from the summit of Pikes during the ARRL June VHF QSO Party and the Colorado 14er Event and working stations on 2 Meters at this distance is not difficult. To be more specific, I worked the Mt Sunflower crew (highest point in Kansas, 160 miles) from Pikes Peak on 2 Meter FM using a 25 Watt mobile and a not-very-well-positioned 1/4-wave antenna on the SUV fender.

I pulled up the distance records for the Colorado 14er Event and found that the best DX using 2 Meter FM is when Phil N0KE on Mount Bross worked Larry N0LL in Smith Center, KS at a distance of 375 Miles! Clearly, we are well beyond line of sight for this radio contact. N0LL has a very capable VHF station on his end and I believe N0KE was using a decent Yagi antenna and was running some power(~200W?). Still, this contact was on FM which is not that great for weak signal work. While Pikes is on the Front Range of the Rockies, Mount Bross (14, 172 feet) sits back some distance, about 60 miles west of Pikes Peak. (I have also worked N0LL from Pikes using 50W and a single 2M9 yagi on SSB with no problem during VHF contests.)

Also during the Colorado 14er Event, Phil N0KE (and Jeff N0XDW) on Mount Bross worked W7XU in Parker, SD on 2 Meter CW at a distance of 551 miles.  Keep in mind that as the signal strength fades, SSB has a serious advantage over FM and CW is even better! So for squeaking out the marginal contacts, CW is the way to go.

Dave asked about working Pikes Peak from Coffeyville, KS using 2 Meter FM. I had to look up where Coffeyville is and discovered that it is way the heck over on the east side of Kansas, maybe 50 miles from Missouri. I estimate that Coffeyville is 525 miles from Pikes Peak. To get back to Dave’s question, making a contact from Pikes to Coffeyville on 146.52 MHz FM is not likely. Maybe if we got some exceptional tropospheric propagation…but I think even then it would be unlikely to complete the contact using FM.

But you never know what might happen on VHF. That’s what makes it fun.

73, Bob K0NR

Congratulations: 285 TechConnect Radio Club

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Today, I had the privilege of presenting the Technical Service Award (ARRL Colorado Section) to the 285 TechConnect Radio Club. I have to tell you…this club is an excellent example of how to advance the hobby of ham radio. They have figured out that providing technical education is a great way to attract members and assist the local amateur radio community.

Here’s a photo of me handing Bill N0CU, club president, the award:

Bob K0NR presents award to Bill N0CU, President of the NA0TC club

At the meeting, Bill also did an excellent presentation on grounding issues in amateur radio stations. This is a complicated topic that Bill handled very well.

Presentation on station grounding by Bill N0CU

Here’s the announcement of the award:

We are pleased to announce that the 2010 Technical Service Award from the ARRL Colorado Section has been awarded to the 285 TechConnect Radio Club ( http://www.na0tc.org/ ). In past years, this award has been presented to individuals that have provided exceptional technical service to the amateur radio community. This year the award goes to the entire TechConnect club for their collective contribution to the Colorado amateur radio community. In particular, the club sponsored the all day “2010 Fall TechFest”, with a great line up of technical and operating presentations (http://www.na0tc.org/TechFest_2010_Workshop_Materials.htm ). The club also sponsors the TechNet that meets at 7 PM local on Tuesday nights on the Colorado Repeater Association 147.225 MHz repeater. These activities have made an important contribution to technical education in the Colorado section.

Our thanks and congratulations goes to the entire club with special thanks to Steve Finch, AI0W, Technical Specialist, Colorado Section for his personal leadership and contribution to this effort.

Jeff Ryan, K0RM
Section Manager, ARRL Colorado Section
http://www.k0rm.net/

Bob Witte, K0NR
Technical Coordinator, ARRL Colorado Section
http://www.k0nr.com/ts.html

VHF Sweepstakes on Mount Herman

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For the 2011 ARRL January VHF Sweepstakes, I repeated the tradition of doing a winter assault on Mount Herman (DM79) on Saturday afternoon. As in past years, Joyce (K0JJW) joined me on the hike, but we also had some other folks along to make for quite a party on the summit this year.

James, Stu and Bob at the trailhead

Stu (W0STU) and I operated independent “Single Operator – Portable” stations from the summit. Stu conned convinced James (KD0MFO) to join him on this trek. We had hoped to get “Alpha Goat” Steve (WG0AT) to go with us, but he made some excuse about needing to prepare for an upcoming trip to Dominica (J7). (Instead of slogging through the snow, Steve wants to go to the Caribbean? Probably a good choice. See Steve”s video of his previous trip up Mt Herman here.) Dan (N0OLD) also hiked up a little later in the day to join us on the summit.

Bob K0NR setting up the Arrow II Yagi Antenna on the camera tripod

Trail conditions were good, with not much snow on the trail. There were definitely some icy spots such that we enjoyed the extra grippers attached to our boots. The weather forecast was a bit marginal, so we were prepared to deal with a snowstorm moving in on us. As I told Stu, the philosophy is “We’ll have a good hike and we might also have some fun working the radios.” In the end, the weather remained solid with only a few snow flakes and temperatures just above freezing. Dan and James built a small campfire (in an established fire ring) that really warmed us up.

Bob K0NR Operating the FT-817

My primary radio was the Yaesu FT-817, driving an ARROW II yagi on 2 Meters and 70 cm and a wire dipole in the trees for 6 Meters. I also had several handheld FM rigs along including one on 222 MHz. Overall, I made 83 contacts with 15 grids for a total score of 1725.

Group photo on the summit: Dan N0OLD, Bob K0NR, James KD0MFO, Joyce K0JJW and Stu W0STU

This may have been the most fun yet for the January VHF Sweepstakes. Of course, any day in the mountains playing with radios is a good day.

73, Bob K0NR

Logbook of the World – What Next?

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ARRL’s Logbook of the World has gotten mixed reviews from the ham community. KB6NU asks Is it more trouble than its worth?, while VE3OIJ says he will probably never use it. On the other hand, K2DBK says you really should use it. The biggest beef seems to be around the level of security (and hassle) built into the logbook system. Someone said “LoTW has more security than my online bank.” Probably true.

I have been loading my ham radio log data into the Logbook of the World for QSOs back to 2002. Although I’ve seen quite a few QSL matches via LoTW, it has not provided any real benefit to me.

Last week, that changed. The ARRL turned on support for the VUCC award. Lately, I have been on the air for most of the VHF contests and not much else. So when I logged into the LoTW web page, I found that I have 123 grids confirmed on 6 Meters, which would qualify me for 50 MHz VUCC. (Actually, I had already qualified for this award years ago, the hard way, with paper QSLs.)

I am still working towards 144 MHz VUCC and have been working on getting QSL cards for these contacts. To be honest, I have turned into a QSL Slacker. I manage to respond to every request for a QSL …eventually, but I have been a slacker on pursuing QSLs that I need for awards. You know the reasons: it takes time, it costs postage, it is a hassle.

The answer is obvious: we need to confirm QSLs electronically. Push a button, upload your log and receive the instant gratification of a confirmed QSO. Life is too short to mess around with cards. Not that I don’t like getting The Real Thing in QSL cards…there is nothing like receiving a well-designed card and holding it in your hands.

The challenge is also obvious… the ARRL needs to turn on support for more awards (way beyond DXCC, WAS and VUCC) with the goal of providing a benefit back to the users of LoTW. Otherwise, the number of people bothering to submit logs will remain low, limiting the success of LoTW.

73, Bob K0NR

Freedom of Speech?

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There are many email lists devoted to amateur radio topics, in particular on Yahoo Groups. These email forums are a great way to learn and exchange information. Usually these lists are created to hit a particular topic of interest. Over time, people stray off into other areas and start posting topics that are not appropriate for the forum. Eventually, the moderator steps in and shuts down the off-topic conversation.

What can happen next is the off-topic posters claim their right of “freedom of speech” is being violated. “This is America, and we have freedom of speech.”  (Kind of an odd statement since the internet is worldwide, not just a US concern, but I’ll set that aside.) This just happened a few days ago on an email list I use.

It has become all too common to hear people claiming “rights” that don’t really exist. US citizens might want to read the US Constitution once in a while, so they know what it actually says about freedom of speech:

First Amendment: Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.

The US Constitution basically says that Congress cannot establish laws that abridge (limit) the freedom of speech. The amendment focuses on what the government is allowed to do to restrict the citizens. It does not mean that a citizen has the right to have their speech published in the local newspaper, sent through an email list, or posted on another person’s web site, etc. Newspapers, web site owners and moderators of email lists make decisions every day on what type of “speech” they are going to allow in their communication forum.

73, Bob K0NR

Announcing: Amateur Radio Technician Class – April 2 & 9

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Ham Radio Two-Day License Class

Monument, Colorado

Saturday April 2 and Saturday April 9 (8 AM to 5 PM) 2011

Location: Tri-Lakes Monument Fire Station 1
Sponsored by the Tri-Lakes Monument Fire Radio Association

The Technician license is your gateway to the world-wide excitement of Amateur Radio …

  • Earn your ham radio Technician class radio privileges
  • Pass your FCC amateur radio license exam right in class on the second day
  • Multiple-choice exam, No Morse Code Required
  • Live equipment demonstrations
  • Learn to operate on the ham bands, 10 Meters and higher
  • Learn to use the many VHF/UHF FM repeaters in Colorado
  • Find out how to participate in emergency communications

There is no cost for the class (donations accepted)

However, students must have the required study guide:

Gordon West Technician Class guide, 7th Edition $20.95
And pay the FCC Exam Fee: $15.00

Advance registration is required (no later than March 25th, earlier is better!)

To register for the class, contact: Bob Witte KØNR

Email: bob@k0nr.com

For more information on amateur (ham) radio visit www.arrl.org
 or www.wedothat-radio.org

Completing the 2010 Trip Around the Sun

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As the year 2010 comes to an end, I feel compelled to write something really insightful and meaningful as we log another trip around the sun. Perhaps some brilliant insights for the coming year? Or predictions of future technology breakthroughs?

Instead, I am writing this.

This is a mishmash of my thoughts about amateur radio at the start of 2011:

  • Tech License Class: One of the most fun and rewarding ham radio things I did this year was help teach a couple of Technician License Classes. There is nothing like engaging with newbies to the hobby to give you a new perspective on how cool amateur radio really is! I have a great set of teammates that made this class fun and successful: Stu W0STU, Paul AA0K and Joyce K0JJW.
  • Next Challenge: The challenge we see right now is helping these newly licensed Techs get engaged with amateur radio, so they don’t drop out. My belief is that the Technician License is a beginners permit that only enables a person to get started in the hobby. We are cooking up some fun activities to keep them going.
  • Public Service: We have a good thing going with the local fire district and the RACES group in our county in terms of real engagement on emergency communications. This is fun, rewarding and a good thing for our local community.
  • Dayton Hamvention: I am going to skip Dayton (again) this year. Instead, I’ll attend the International Wireless Communications Expo (IWCE), a trade show centered on land mobile and mobile wireless communications. For me, it has an interesting mix of emergency communications, land mobile, data/voice convergence and test & measurement topics. Oh, did I mention that it is in Las Vegas?  I suspect that it will be a better venue than Hara Arena 🙂
  • ICOM IC-9100: I have been patiently waiting for this rig to move from vaporware status to reality. Maybe it will happen this year?
  • Keep On Writing: I find that writing is good therapy, so I will keep that on the list for 2011. Mostly it will be this blog and the FM column for CQ VHF magazine.
  • Operating: It seems I don’t actually get on the air as often as I’d like, certainly not for the casual ragchewing QSO. Operating events seem to be a good way for me to get some air time: VHF Contests, Colorado 14er event, Colorado QSO Party, maybe an HF contest or two.
  • D-STAR: I haven’t been spending much time with D-STAR lately and I want to increase the focus on it. D-STAR falls into that dorking around with new technology category where experimenting with it and learning about it is the main activity.  The technology continues to grow in adoption…arguably slow in real terms as the analog modes have such a huge installed base.
  • APRS: Oddly enough, I have been messing around with APRS again, mostly thinking of it as a tracking tool for hiking and other outdoor activities. Maybe we need to look at bridging APRS with D-STAR location data?

Amateur radio is clearly my #1 hobby interest, and by a wide margin. But it is primarily a hobby (yes, with a public service hook to it…at least for me). It is important to keep it in perspective and not let it turn into another job. I already have one of those.

What are you going to be doing in 2011?

73, Bob K0NR

Playing Around with APRS

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In the past few weeks, I started playing around with APRS again. Interest in APRS seems to come and go for me over time. It has the technical intrigue of figuring out how it works and the fun of exploring radio propagation paths. (If you are not familiar with APRS, K9DCI has a good introduction to it.)

The web site aprs.fi has some interesting hooks built into it that maps the location of APRS stations. I embedded a map here on my weblog page that shows my home station position (K0NR) and other stations in the vicinity. I intentionally blocked stations that only exist via the internet (no RF).

This map is dynamic in that it will update to show the latest APRS activity. It is fun to try select different map styles (courtesy of Google maps). Also, you may want to look at the html code to see how this is done.

73, Bob K0NR


TSA Travel Tips

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I just completed my last business trip of the year. As I was standing in the line for the security screening I was pondering the various techniques I have adopted to smooth the process. Actually, I was just daydreaming since the line was moving pretty slow. It was the family of 5 in front of me that seemed to be clogging the system.

For the infrequent traveler, the most important thing is to read and follow the instructions from the TSA. The other day I saw a guy trying to take 6 quarts of bottled water through security. Then there was the guy with the GIANT belt buckle and a HUGE set of keys in his pocket. Not good.

Here are my tips for making it through TSA screening as easily as possible:

  • Before you enter the security line (or while you are waiting in line), clear your pockets of all things metal and put them into your carry on. Don’t dump all this stuff into the little bowls they have at the x-ray machine as it just slows you down.
  • Keep an eye on the various screening lines to see which ones are getting hosed up. In particular, look for infrequent travelers that don’t seem to know what they are doing and stay away from their line.
  • If you can, stay away from the new body scanners and steer towards the lines that have metal detectors. Be aware that the body scanners require you to take everything out of your pockets, not just metal objects.
  • If you have a jacket with you, there are two options: 1) before you get in line, stuff the jacket into your carry-on bag (one less thing to mess with) or 2) hang onto your jacket but put your metal items into a pocket (best if you have a zipper or other closure on the pocket so things don’t spill out). If you are really hardcore, check out the SCOTTEVEST products with a gazillion pockets.
  • Slip-on shoes are a little faster to get on and off.
  • The x-ray machines have a roller tray that feed carry-on items into the machines. Don’t be too quick to put your luggage onto this tray. First  focus on getting the special items into the tubs they provide. That is, pull your notebook computer, your 1 quart bag of fluids, your shoes, etc. and put them into a tub. Then, as you approach the x-ray machine plop your carry-on bag(s) onto the tray. This avoids juggling a cargo train of luggage on the tray.
  • What about ham radio gear you are carrying? (Yes, this is a ham radio blog.) Handheld transceivers are not much of an issue these days, since they look so much like mobile phones. Sometimes I will pull them out and put them in a tub for screening. For larger radios, treat them like a notebook computer….pull them out of the bag and put it in a tub so it is visible and can be easily x-ray’d.

Those are my thoughts….what do you say?

73, Bob K0NR

NASA Amateur Radio Video from ISS

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Well, this one has actually been out on the web for several weeks, but I finally got around to viewing it. Col. Doug Wheeler Wheelock (KF5BOC) gives a short tour of the ISS and then demonstrates amateur radio operating (2 Meter FM) from the ISS. Col. Wheeler Wheelock was very active on the ham radio and I heard him on many passes but was not able to work him.

This is one of the best NASA videos concerning amateur radio on board the ISS, so don’t miss it!

This Spewed Out of the Internet #17

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Just catching up on some of the fine information spewing forth from the Internetz.

I saw this video about a flying car. Yeah, I think I might need one, but only if I’m the only one. I don’t want the crummy drivers I see on the road flying around in the air.

See what happens when Hitler finds out he worked rare DX but did not show up in the log.

Here’s a higher quality ham radio video by my friend Steve, WG0AT. See Peanut, Rooster and the Alpha Goat operate from the summit of Mount Herman. It sounds like this may be the last Goathiker video for a while, so enjoy it.

Not to be left out, NASA posted this excellent video from the International Space Station (ISS). Colonel Doug Wheelock gives a fine explanation of what it is like on his end when working the earthbound pileup. Don’t miss this one!

Recreational Equipment Incorporated (REI) has updated the Ten Essentials for wilderness travel. Whether you use the old ones or the new ones, give this some thought.

The ICOM IC-9100 inches its way towards being available for sale in the US. At least, I think it is. A fairly detailed product brochure is available on ab4oj.com. The latest word is that the radio will be available “soon”.

Yawn, wake me when it shows up.

Electronic Design magazine has a good tutorial on digital communications, including bandwidth, data rate and various forms of modulation.

73, Bob K0NR

Has Amateur Radio Missed Out on Instant Messaging?

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Earlier today, I was examining the various mobile phone service plans and “smart phones.” This caused me to reflect on how text messaging has become such a big deal in the mobile wireless world. Text messaging, more properly called  SMS (Short Message Service), supports simple text messages up to 160 characters. Even with a limited text length, much information gets passed using SMS, with usage rates exploding in recent years.

Twitter created a messaging system based on these short messages (actually limited to 140 characters to  fit into SMS with some margin). It wasn’t clear at first what the purpose of this system is, but people have figured out how to make use of it.

Other social networking systems, such as Facebook, have included SMS into their system, including sending status updates out via text messages. It turns out that you can do a lot with just 160 characters of plain text.

Ironically, amateur radio had the basic technology for a simple messaging system decades ago. This technology is packet radio or AX.25, a narrowband digital communications format that is ideal for sending short messages. This was a hot technology during the 1980’s and into the 1990’s. Later it faded into the background as the Internet delivered much faster digital pipes.  APRS (Amateur Packet Reporting System) revived interest in the mode in the past decade but remains a niche application in ham radio.

The APRS community has tried to take APRS main stream as a ubiquitous messaging system, but this has not gained wide adoption. Bob Bruninga WB4APR documented the Universal Text Messaging initiative on his web site. This is a nice piece of work. Bob argues correctly that we have quite a few different messaging formats that need to be tied together so they can be more effective.

What is standing in the way of a robust amateur radio messaging system? I think it  it is quite simple: the lack of a compelling mobile device for text messaging. While both Kenwood and Yaesu have incorporated APRS into their handheld radios (TH-D72, VX-8GR),  the emphasis seems to be on position reporting (GPS) and simple status messages. Neither of them have done anything innovative in the text message area, such as including a QWERTY keyboard or a touch screen user interface. Imagine a handheld radio based on the Android operating system…an open system that can be programmed by the amateur community. Being inherently digital, ICOM’s D-STAR radios had the opportunity to really nail this type of use but they have missed it so far.

There has been some fine work done using D-STAR to provide Instant Messaging (IM) capability. Most notably, the D-RATS software by Dan Smith KK7DS does a super job of integrating IM and email, using the ham bands along with the Internet. (D-RATS has many other features, too.) But to run D-RATS you need a computer attached to the radio….appropriate in some applications but missing the portability associated with the conventional HT or mobile phone.

A valid question is whether this really matters at all. Do we even need a ham radio instant messaging system? If we did, what would we use it for?  Applications that come to mind are: position reports, event announcements, DX spots, emergency pages, callsign lookup, repeater directory and, of course, casual chatting.  I suspect that once the capability is available the software gurus among us would apply it to applications that are beyond our current thinking. Actually, we know what hams like to “tweet” about…just monitor the high level of ham activity on Twitter. To really make this work, we’ll need some action from the equipment manufacturers.

That’s my thinking….what do you say?

73, Bob K0NR

QST Announcement of January VHF Contest

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While I was traveling on business, I started getting emails about my photo in QST. When I got home I took a look and found this announcement for the upcoming January VHF Contest.

I had posted this photo in my soapbox comments for the 2010 contest. Sean KX9X dropped me an email a few months ago asking if they could use it for publication. Of course, I said “sure!”

See you on the air in January!

73, Bob K0NR

CQ VHF Magazine

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CQ VHFMy radio interests have always been peaked on the VHF and higher bands, so that is one reason why I really enjoy  CQ VHF magazine. CQ VHF is published once a quarter and contains a variety of fun content on radio operating above 50 MHz.

With the >50 MHz focus, it is a great fit for for new Technician licensees, but it is also technical enough for more experienced hams. Take a look at the most recent table of contents here.

I like the magazine so much that I an a contributing editor for it, writing the FM/Repeater column. (No, it is not so lucrative that I have quit my day job….this is in the labor-of-love category.)

Right now, CQ VHF is running a holiday subscription special of $24/year.

Check it out.

73, Bob K0NR

Time to End Daylight Saving Time?

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You probably know that this weekend marks the end of Daylight Saving Time (DST) in the US. While I despise the idea of losing an hour in the spring, I do appreciate the concept of sleeping in another hour in the fall.

Actually, I think the whole concept of DST is bogus. In fact, the concept of time zones makes no sense in the 21st century. Modern life is a 24/7 experience without the need to tie it to the “noon is when the sun is overhead” paradigm.

DST is obsolete.

My proposal is to take the best of DST, which is gaining an hour in the fall, and expanding it for maximum  benefit. Therefore, we would never do the “spring forward” part of DST but always just slip an hour in the fall. I recognize that this will work great the first year but over time we’ll accumulate quite a bit of clock skew.

To keep this from being a problem, we’ll abandon local time all together and just rely on UTC (Coordinated Universal).  Businesses, schools and government agencies would need to translate UTC to the needs of the local situation. Instead of starting work at 8:00 AM local time, enterprises in the US would start work at, say 14:00 UTC. It is a simple matter of doing the math and keeping things straight.

Then every year in the fall, we’d slip UTC by one hour to give us another hour of sleep. How can anyone object to that?

– 73, Bob K0NR

Another Excellent Tech Class

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Today we finished up the second day of our Two Day Technician License Class. This is a formula that we have found be to effective….a bit of a cram to get it done in two days but still able to cover the material.

The class was typical of what we have been seeing….about 1/3 are connected to the local Boy Scout Troop (Scouts and Parents), about 1/3 are in the category of “I always wanted to do this but never got around to it” and 1/3 are connected to public service organizations (fire, search and rescue, etc.).

We registered 24 student but 3 of them dropped out for one reason or another. Today, 21 students attempted the Technician Class Exam and 18 of them were successful (86% pass rate).

Thanks to Stu W0STU, Paul AA0K and Joyce K0JJW for helping to make this happen.

73, Bob K0NR

Yet Another Callsign Hat

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On his blog, W2LG mentioned that he got a new hat with his callsign on it from Astrid’s Embroidery and Quilts. I took a look at their web site and was impressed by the options offered (lots of color and graphics choices).

I also came across 3 Reasons Why Should Buy A Callsign Hat by W1MST, which also referenced the same vendor, run by Todd W8MC.

Of course, if you look in my closet, you’ll find that I am already equipped with several different styles of callsign hats…and a huge pile of other hats. So some people might say I really don’t need another hat.

But I ordered one anyway. It arrived in just a few days and it looks great.

– 73, Bob K0NR

2010 Fall TechFest

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Here is an excellent opportunity to build your ham radio knowledge and skill. The 285 TechConnect Radio Club (www.na0tc.org ) is once again sponsoring the Fall TechFest (Saturday November 6th). This educational event is aimed at the Tech advancing to General, with a good selection of workshop topics.

I often get new Technician licensees (or not so new licensees) asking for help on learning more about amateur radio. The 285 TechConnect Radio Club has taken this on and has created a super environment for technical training.

I will be presenting the VHF workshop for this event. I presented on a different topic last year and it was loads of fun, so I am looking forward to doing it again!

Schedule of Workshops
(order and topic may vary)
Time Topics
9:00 – 9:50 Contesting Using Wire Antennas and 100 Watt Rigs
10:00 – 10:50 DXing Using Wire Antennas and 100 watt Rigs
11:00 – 11:50 The Fun Of Using Classic Radios
12:00 – 12:50 Lunch (on your own) Question and Answer Session for those who stay to eat
1:00 – 1:50 QRP – Make Contacts Like the Big Boys with 5 Watts
2:00 – 2:50 VHF/UHF – Beyond FM
3:00 – 3:50 Audio Processing – Make That Difficult Contact

Registration
Space is limited! Please pre-register.
Cost $10.00 (cash only at the door).

Where
The Inter Canyon Fire Department Station #1. The address is 7939 South Turkey Creek Road, Morrison, Colorado OR check our website – www.na0tc.org.

NAØTC – 285 TechConnect Radio Club
2010 Fall TechFest
November 6, 2010

Be sure to visit the NA0TC web site for complete information.

73, Bob K0NR

Our First GeoFox Rally

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Our local radio club (W0TLM) has been able to help a number of Scouts from the local Boy Scout troop get their Technician Class radio license. (See Results from the Second Technician Class.) The boys are having a lot of fun talking to each other on 2 Meters and using ham radio to support their troop activities.

We started thinking about some other fun activities we could do with them. Somehow the notion of combining some GPS (geocaching) work with transmitter (fox) hunting emerged. It turns out that we are not the first group to have this idea. The North Bay Amateur Radio Club in California had already tried this and named it GeoFox.

Our version of GeoFox,  crafted by Stu W0STU, resulted in a course that had three hidden transmitters  and three checkpoints defined by latitude/longitude, for a total of 6 checkpoints. The total course length was about 3.6 miles.

Using this as a learning opportunity, the Scouts built their own “tape measure” yagi antennas for use in direction finding.

The course was set up in a portion of Pike National Forest, near Woodland Park, Colorado. The Scout troop combined the GeoFox event with a weekend campout. The Scouts worked in teams of 4, with at least one licensed radio operator and a GPS operator. Each team started at 20 minute intervals with instructions to get them to the first checkpoint. At each checkpoint, they found the instructions that would get them to the next checkpoint. In addition to GPS and radio operating, the instructions required the use of some basic Morse code and traditional map/compass. The event crew was in radio contact with the teams as we tracked their progress throughout the course.

The Scouts plan their attack at the start of the course.

The course turned out to be more difficult than planned. Some of the teams got off track into difficult terrain (for one reason or another) and took a while to recover. A few of the teams did not finish the course in time.  Everyone left the event quite exhausted but full of stories to tell about their fun day.

A GeoFox team leaves the starting point, headed for the first transmitter

I think we have the start of a really fun activity for all ages that we will refine over time.

– 73, Bob K0NR

This Spewed Out of the Internet #17

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The summer is flying by and it has been difficult to keep up with the blog. Here are a few things that just spewed out of the internet.

This week there is a nasty wildfire burning west of Boulder which has already consumed 92 structures. (Take a look at some of the photos here.) We have gotten used to the occasional wildfire in the west, some big, some small. This one seems to have spread rapidly and damaged many homes in a short time. And its not over yet. And yes, the local amateur radio community is actively helping out.

K3NG writes about a situation concerning a public service event. He makes some really good points about the amateur radio role in such events. Sometimes I see radio amateurs working events and not really providing much value. This gives us some on-the-air practice but that may not be enough to justify participating.

The Southgate ARC has an item about keeping the AM mode alive. To me, AM definitely means ancient modulation, clearly approaching the Duty-To-Die phase. Please end the life support on this mode and let it slip away. It really will be better for everyone.  (OK, I suppose these guys are just having fun…hard to knock that. But they could do it with half the bandwidth. )

Back to the future with a reworked Commodore 64. I could see getting one of these PCs.

Here’s a good article from unplggd on emergency preparedness from a tech point of view (but not necessarily amateur radio). It’s worth a read.

Those Compact Florescent Light (CFL) bulbs are gaining in popularity. I believe they are an ecological time bomb because of their mercury content. See this article for more information. Oh, and if they aren’t designed well, they tend to radiate radio frequency interference.

73, Bob K0NR