Category Archives: VHF/UHF

Want to Try Working the June VHF Contest?

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Here’s a reminder that the ARRL June VHF QSO Party (AKA The June Contest) is coming up next weekend. This is a great opportunity to have fun operating the VHF and higher bands.

Here’s some info I sent out to our local club (sorry, it is a little specific to our area but you may find it useful anyway).

The ARRL June VHF QSO Party is next weekend (June 11, 12), which is The Big One in terms of VHF events. This is the best opportunity to try out VHF contesting!

Here are some practical thoughts on how you might start:

When Should I get on the Air?
The contest runs from 1800 UTC Saturday to 0259 Monday, which translates to 1200 Noon Mountain time on Saturday to 9 PM Sunday. (By the way, you should keep your log in UTC. You can always find the correct UTC time by going here: http://time.gov/timezone.cgi?UTC/s/0/java )
You can operate any time during the contest but I’d suggest focusing on noon to 6 pm Mountain time on Saturday.

What if I only have FM equipment?
Many of our new Technician licensees only have a dualband FM radio, often an HT. This will limit your activity in the contest but it doesn’t count you out. My suggestion is to get on the air on Saturday afternoon and try to contact as many stations as you can on 147.555 MHz and 446.000 simplex (Stu W0STU suggested 446.100 MHz which is also fine.) Stu W0STU and Steve WG0AT will be doing a portable operation from the top of Mt Herman on Saturday afternoon and they will be active on FM. I am sure they will appreciate a contact and a bunch of the Scouts are likely to be on the air. Don’t just work Stu and Steve….talk to everyone that you can.
I will be up in the mountains west of South Park and will also be listening on FM. I will be more difficult to reach but not impossible. Take that as a challenge! (Hint: it helps if you have a yagi antenna pointed West.)

Where Should I Go?
For starters, you don’t have to go anywhere, you can operate from home. But Height Above Average Terrain matters, so you might consider finding a “high spot” to operate from. Obviously, Stu and Steve are thinking Mt Herman is an excellent spot (which it is). There are other peaks along the Rampart Range (Raspberry Mt, Sundance Mt, etc.) that are just as good. The highest spot that is easy to get to is Pikes Peak (duh) and there is a road to the top! And Mount Evans is another option, west of Denver. If you are going to be out running around doing errands on Saturday, you can operate mobile from the car. In fact, you might want to be a “rover” and make contacts from multiple grids.

What about 6 Meters?
Six meters is usually the most fun band in the June contest. Normally, things are pretty quiet on 50 MHz and you work just the locals. But then the band opens with sporadic-e propagation and you’re working Florida, Texas, Wisconsin, Washington, California, Canada….almost anywhere in North America. For this, you’ll really want a SSB radio that can operate on 50.125 MHz USB (calling frequency) and move up from there as the band gets busy. Even a modest antenna, like a simple dipole, can work on 6 Meters. So don’t think you need something fancy to get started. There may be FM activity as well, which would be on 52.525 MHz.

Set a Goal
The basic idea is to see how many stations you can work on each band. You can also set a goal such as trying to get the Worked Colorado Award  ( http://rmvhf.org/Certs/Award.html ) which is achieved by working 6 different grids on any VHF/UHF band.

What Else Do I need to Do?
Read the rules, which are available here: http://www.arrl.org/june-vhf-qso-party
Make sure you know your grid. The Monument area and all of metro Denver is in DM79. Colorado Springs and Pueblo are DM78. The dividing line runs east/west roughly at Black Forest and the USAFA stadium.

Here’s some more VHF information on my web site:

How To Work A VHF Contest

Getting Started on 2-Meter SSB

So You Want to Be a Rover

And don’t forget to have fun!!!!

73, Bob K0NR

 

Six Excellent Summertime Radio Activities

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Next weekend is Memorial Day in the US, which means it is time to get serious about summer activities.  Here’s what I am plugging into my calendar. You will note a clear emphasis on activities here in Colorado but most of these events are nationwide:

ARRL June VHF QSO Party (June 11-12) This is the best VHF/UHF/Microwave contest of the year, because we almost always have some nice openings on 50 MHz. I think of this as “VHF activity weekend” that happens to be a contest. My favorite amateur radio event of the year.

ARRL Field Day (June 25-26) This is arguably the most popular ham radio event in North America. The great thing about FD is that you can make it whatever you want it to be: make it a contest, use it for public relations, just go camping, etc.

CQ Worldwide VHF Contest (July 16-17) This is the only Real VHF Contest, since it is limited to the 6 Meter and 2 Meter bands. (The ARRL contests include the UHF and higher bands and the scoring emphasizes these bands.) We usually get some 6 Meter openings on this weekend, as well, making it a lot of fun.

Colorado 14er Event (August 7) The Premier Mountaintop Ham Radio Event, with a Colorado emphasis. The concept is simple: activate the 14,000 foot mountains and have fun working everyone you can.

Colorado QSO Party (Sept 3-4) A state QSO party focused on working stations in Colorado. There will be lots of mobile and portable operators out to activate Colorado counties. Contacts are valid on HF, VHF and higher.

Colorado FM Sprint (Sept 10) This FM-only contest runs concurrently with the ARRL September VHF QSO Party. The FM Sprint runs for 5 hours on Saturday afternoon, so it is another great opportunity for some mountaintop operating. The Sprint rules are compatible with the ARRL contest, so you can always work both of them!

I hope to work you during these events.

– 73, Bob K0NR

This Just In: 70 cm Band is Safe

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This just in: According to the New York Long Island ARRL Section, the threat to the 70 cm band has been resolved. That is to say (these are my words), rational thought has prevailed. The NLI web site says:

May 19, 2011, Massapequa Park, NY – A delegation of Amateur Radio operators from the Long Island / New York City area met this morning with Congressman Peter T. King (R-NY) to discuss his recent proposed legislation, HR 607, and its impact on Amateur Radio.

Congressman King said that he fully understands and appreciates the importance of Amateur Radio and the service it provides to the community, and that he would see to the modification of the bill so that the 420 – 440 MHz band would be excluded from the spectrum to be auctioned. The delegation included Mike Lisenco, N2YBB, ARRL Section Manager for New York City / Long Island (NLI), Peter Portanova, WB2OQQ, NLI Local Government Liaison (LGL), George Tranos, N2GA, NLI State Government Liaison (SGL), and Jim Mezey, W2KFV, NLI ARES Section Emergency Coordinator (SEC).

Read the full story at the NLI web site.

73, Bob K0NR

 

Yes, Band Plans Do Matter

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There was an interesting exchange on the AMSAT-BB email list last week. Dave KB5WIA noted a strange signal on the AO-51 satellite:

I just thought I'd relay a bit of QRM I observed on AO-51 on this
morning's 3/16/2011 1322z pass. The bird was totally quiet (just a
nice carrier) for the first 5 minutes of the pass, but then it sounded
like a repeater was getting into the sat uplink:

3/16  1327z:  "Connected, KD7xxx repeater."
3/16  1328z:  "KD7xxx repeater disconnected."
3/16  1328z:  "hey Stacy did I see you at the corner there by Wendys?"
3/16  1330z:  "...repeater in Middleton, Idaho."

I obscured the KD7 call sign to protect the guilty innocent. A little searching on the internet by some of the AMSAT folks revealed that there was an EchoLink station that matched the KD7 call sign.

Patrick WD9EWK/VA7EWK wrote (again, I obscured the call signs):

And there is an Echolink system (KD7xxx-R).

What may be more interesting, after some Google searches,
is a series of references I saw where the KC0xxx-L system
had been linked to the KD7xxx-R system.
On http://www.echolink.org/logins.jsp now (1839 UTC), I saw
this for KC0xxx-L:

KC0xxx-L        Clay Cntr,KS 145.920 (1)        ON      01:27   367513

In the station description, it shows 145.920 along with the QTH
in Kansas.  This may be the system that's causing the QRM on
AO-51, and the other system is just linked to KC0xxx-L at that
time.

So it turns out that the KD7 call sign heard was linked to the KC0 EchoLink station which was operating on the uplink frequency of AO-51. George, KA3HSW, sent the KC0 operator an email and reported back that the KC0 station “has graciously changed frequencies.”

What can we learn from this?

  • Check the VHF band plans for your area before getting on the air. Be extra careful when setting up stations such as EchoLink or similar system that transmits frequently.
  • Be aware that there are amateur radio modes that you can interfere with even though you don’t hear anything on frequency. In the case of the AO-51 interference, the satellite hears the uplink frequency over a wide geography but never transmits on that frequency. The downlink is on the 70 cm band.
  • Note that the first call sign associated with the interference (KD7xxx) was not at fault. It would have been easy to jump on his case and chew him out for transmitting on the satellite uplink frequency. Showing good judgment, the satellite guys investigated further.
  • The issue was resolved by a polite (I assume) email to the offending radio amateur and he agreed to change the frequency of the EchoLink station. Nicely done.

So check the band plan for your area and follow it. And proceed with caution when interference does occur. It was a rookie error to put an EchoLink station in the satellite sub band and it was quickly resolved.

For more information on 2 Meter band usage, see this Choose your 2 Meter Frequency Wisely.

– 73, Bob K0NR

Reading the Fine Print in Part 97

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The ARRL just filed a Petition for Rule Making with the FCC concerning a specific modulation format called TDMA (Time Division Multiple Access). This issue has been simmering in the community of repeater operators but I suspect that most hams have no idea what this is about. It so happens that the land mobile industry (most notably, Motorola) has developed a very efficient and cost-effective digital standard called DMR (Digital Mobile Radio). Motorola markets this technology under the name MOTOTRBO.

As often happens, some radio amateurs deployed this new Part 90 radio technology on the ham bands. Along the way, people started looking carefully at the emission designator that Motorola was using for MOTOTRBO and began to question whether it was allowed under Part 97. I won’t go into the gory details as it makes my head hurt :-). My brief look at this concluded that there is definitely an issue here but I am not completely convinced that DMR is illegal under Part 97. If you want to dig into this, read the petition in detail with a copy of Part 97 and a few aspirin in hand.

The ARRL probably did the right thing by requesting a very focused rule change which should remove any ambiguity from Part 97. (I know this will disappoint the arm-chair lawyers who make a so-called life out of debating these issues to death.) The ARRL also asked for an immediate temporary waiver from the FCC to allow for DMR operation while the rule making proceeds…another good move.

It is unfortunate that the FCC amateur rules were written in a way that (potentially) disallowed the use of the latest land mobile radio system. This is exactly what we don’t want to have happen in the Amateur Radio Service, as it should be a place for easy adoption of new technology. Future FCC rule making should keep this in mind, always erring on the side of flexibility.

– 73, Bob K0NR

Update on 25 Mar 2011:

The ARRL reports that the FCC is seeking comments on this petition, now designated RM-11625. Comments can be filed electronically here.

IWCE 2011

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This week I attended the International Wireless Communications Expo, a wireless radio conference centered on land mobile radio (LMR). While not an amateur radio event, it was three fun days totally immersed in radio technology. Being a professional show, not a hobby event, the emphasis was on modern and emerging technology in the industry. No boat anchor radios here.

Amateur radio often adopts and adapts technology from the LMR industry, especially for mobile operating on frequencies above 50 MHz. I guess we could call VHF FM amateur land mobile.

A few highlights from the show:

  • A large portion of LMR is Public Safety Radio: fire, police, ambulance, so emergency communications was inherent in many of the conference sessions.
  • There was quite a bit of analog FM equipment on display but LMR is clearly shifting to digital, with formats like APCO Project 25 leading the way. The FCC requirement to go narrowband by January 1, 2013.
  • Several vendors are familiar names in the amateur radio industry:  Kenwood, Vertex (Yaesu), ICOM and Alinco. Of course, Motorola had a major presence at the show.  I noticed that ICOM had a stack of amateur D-STAR equipment on display.
  • Historically, LMR radios covered only one band (VHF low, VHF high, UHF, 800 MHz), which matched the tendency for each organization to deploy channels in only one band. With an emphasis on interoperability, more organizations are finding the need to operate on multiple bands and the manufacturers are responding with multiband radios (see Motorola APX™ 7000, for example).
  • A number of radio manufacturers from China were present, generally with lower cost radios (Hytera, Kirisun).
  • The FCC recently announced that the frequency range known as Block D (two sections: 758–763 MHz and 788–793 MHz), dedicated to public safety broadband use, will use the LTE air interface standard. LTE is the dominate 4G mobile phone standard, just starting to be deployed. The conference had many sessions on the challenges of getting funding and actually making this work.
  • Since Block D will use LTE, it opens up the potential for public safety networks that also use commercial networks (e.g., Verizon) for extended coverage. These hybrid systems provide for tight control over the primary network while leveraging the infrastructure investments from commercial providers.
  • Quite a few sessions on the integration of IP-based networks into radio systems. The general trend is that the local “air interface” may be a specific radio technology (P25, LTE, …) but the network is always IP-based.

I was struck by the forward march of technology in the LMR industry. In the ham radio world, we often see strong opposition to adopting anything new. And we’re supposed to be the experimenters!

– 73, 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

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

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


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!

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

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

Updated Web Site at CQ VHF

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CQ COMMUNICATIONS, INC. PRESS RELEASE. Richard Moseson, W2VU, Editorial Director, sent out the following dated Tuesday, August 10th:

“CQ VHF Magazine Launches Streamlined Website — Continuing its company-wide update of its magazine websites, CQ Communications, Inc. today announced the launch of a new and easier-to-navigate website for CQ VHF magazine. Like the recently updated sites for WorldRadio Online and Popular Communications, the new CQ VHF site features a cleaner look and a streamlined user interface to make it quicker and easier for visitors to find what they are looking for. The CQ VHF update coincides with posting of the highlights for the Summer 2010 issue.

Current issue highlights include sample pages in full-color layout, to give prospective readers the ability to see what the magazine itself looks like in print. Highlights of previous issues reaching back to 2006 are available on the website with easier access than in the past. One new feature is a ‘Current Events’ page, which provides readers with access to information on upcoming events and activities that is more up-to-date than possible with a quarterly publication.

The site also includes links to clubs, ham radio reference sites, contact information for editors and columnists, direct links to advertisers’ websites and to other CQ Communications publications. In addition, a link to the magazine’s Facebook page makes it simple for readers to provide feedback and connect with other hobbyists.

CQ VHF is a quarterly magazine devoted to ‘Ham Radio Above 50 MHz.’ First published in 1996, it combines articles designed for newcomers with historical and technical features best appreciated by more experienced VHF operators. It is edited by Joe Lynch, N6CL, who is also the long-time ‘VHF-Plus’ editor of parent magazine CQ Amateur Radio.

CQ VHF is published by CQ Communications, Inc., which also publishes CQ Amateur Radio, Popular Communications and WorldRadio Online magazines. The new CQ VHF website may be accessed at: <http://www.cq-vhf.com>.”

CQ WW VHF – Just Another Day of Sporadic-E

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You just have to love VHF contesting….hours of boredom punctuated by the excitement of band openings. Unlike HF contests, you never really know what you are going to get in terms of propagation.

So it was with the CQ Worldwide VHF Contest this weekend. It started out really slow on Saturday. I mean really, really, really slow. There were not many local stations on the air, so it was tough sledding on both 2 Meters and 6 Meters. (Yes, the CQ WW VHF Test is two bands only: 2 Meters and 6 Meters…and those are my favorite bands to work anyway.)

Then later in the afternoon, I hear Louisiana stations coming in on 6 Meters. Then the magic sporadic-e clouds shift and I am working the east coast, all the way up into the New England states. Later the propagation shifts to the midwest and it was Wisconsin, Michigan, Indiana, Iowa and Kansas. I was working them as fast as I could and had quite a pileup into DM78 Colorado. The band stayed open till about 9 PM local…just when I thought it was done, another station would come booming in.

Sunday started out slow but during the morning I worked the Pacific northwest on 50 MHz, including several contacts into Canada. This opening was not as strong, but it kept me busy until the afternoon. Then it was picking up everyone I could on 2 Meters. Again, local participation was surprisingly light…not sure what’s up with that.

Band  Mode  QSOs   Pts  Grd
50     CW     1      1    1
50    USB   259    259  112
144    CW     1      2    1
144   USB    14     28    7
Total Both  275    290  121

Score : 35,090

All in all, a great time was had by me.

73, Bob K0NR