Archive for the ‘ham radio’ Category
A Little Mountaintop Video
While digging through the archives, I came across some previously unseen video from the 2012 Colorado 14er Event. Joyce KØJJW and I operated from Mount Sneffels (SOTA W0/UR-001) and this video shows a radio contact with Mark KTØAM on Mount Shavano.
The 2013 event will be held August 4th, see www.14er.org.
Summits On The Air (W0/SP-112) – Castle Rock
There is a very jagged peak just east of Buena Vista, CO called Castle Rock (not to be confused with the city by the same name). I knew this was a SOTA summit (W0/SP-112) and I had my eye on it for a while now. It is extremely rocky and jagged near its summit, so I was not sure if it could be ascended without a technical climb. A little research revealed that it was climbable but quite steep near the top. SummitPost.org has a good description of how to ascend this peak.
My hiking partner and wife, Joyce K0JJW, joined me on the climb. We managed to get off the preferred route and got into some very steep rock scrambling. Good judgment prevailed and we regrouped and found a more reasonable path but probably cost us an extra hour of hiking. As advertised, it did get very steep at the top. (Study the SummitPost information more carefully than I did.)
Recently, I picked up an Arrow 3-element Yagi antenna for 2 Meters (Model 146-3). This antenna can be dismantled and carried inside a reasonable size daypack (or strapped on externally). The boom has two threaded holes for mounting the antenna on a camera tripod. I used a MountainSmith trekking pole that can double as a camera monopod and mounted the antenna on it.
For this SOTA activation, I kept it simple and just used my Yaesu FT-60 to work 2 Meter FM. Accordingly, I configured the Yagi antenna for vertical polarization. (There are two mounting holes on the boom, so you can choose vertical or horizontal orientation.)
The trekking pole is not self-supporting and does not provide much additional antenna height but it makes the antenna a lot easier to point for extended periods of time. I like to use a trekking pole for hiking, so this is a good way to get a little extra utility out of it. I am pleased with how this antenna system performed and will use it again.
73, Bob K0NR
This Spewed Out of the Internet #25
Here’s another update of interesting important stuff spewing forth from the internet.
I put my two presentations from HamCon Colorado out on the web: Practical Amateur Radio Measurements and Mountaintop VHF in the Colorado High Country . Also, check out Kelly N0VD’s blog posting on the event.
Having trouble finding a repeater to use on VHF? Check out my Shack Talk article on HamRadioSchool.com
KB5WIA provides some good tips on EME operating.
Hans PD0AC addresses the question: What’s the Best Chinese Dual-band HT? For best price/performance, he selected Baofeng UV-B5/UV-B6 (and I agree).
The Noise Blankers continue to publish their Ham Hijinks. Remember: Do Not Take These Guys Seriously. Seriously. Do not do this. Seriously.
There’s lots of great ham radio events coming up this summer. This weekend is the CQ Worldwide VHF Contest, the only “true VHF contest” out there since only the 50 MHz and 144 MHz bands are used. Then there’s the Colorado 14er Event, which includes Summits On The Air (SOTA) activations, on August 4th. (Don’t forget to check out the great new Colorado 14er Shirts!) The Colorado QSO Party is another great operating event, on August 31st.
Remember: There is no such thing as ground.
Think about it: an infinitely large electrical node with zero impedance able to sink an infinite current. Not likely.
73, Bob K0NR
Repeater work on Sandia Crest
I had the opportunity of a lifetime to traverse through the nation’s most RF dense mountaintop towersite, and possibly reduce my chances of having children by a large amount…in any case, today’s work was bucket loads of fun.
| Towers lining the crest. [Wikimedia user Skoch3, Photo] |
The work at the site was simple — some regular maintenance to the W5MPZ D-STAR repeater and gateway.
So, I got up early and headed off to Ed’s (KA8JMW) place to pick up the caravan to the peak. We packed the truck with some server rack shelves and tools, and headed to pick up Brian (N5ZGT), then Chris (NB5T).
And then, the 10,768 ft (3,255m) summit.
The road was blocked by the Forest Service since the park was closed due to fire danger. Thanks to some prior planning, we had no trouble getting past.
And not two turns in to the curvy mountain road, we meet our first deer, head on. Thanks to Ed’s quick foot on the break (maybe he was practicing for QLF?) the deer zipped across the road, perhaps only with a bruised tail.
We were warned that with the lack of humans, nature tends to take over a bit
The one thing I though of going up the road is, what if you had this road all to yourself (like we did then) with a nice, fast rally car?
I think deer would have a problem with that.
Anyway, we got to the top, and met the first obstacle:
Chris dispatched the lock on the well-signed gate and we were in. At that point, we had entered the danger zone; the steel forest. With at least 26 FM stations, almost half being over 20 kilowatts, 33 TV stations, more than half over 100 kW, and an uncountable number of microwave dishes, log periodics, yagis, verticals, radomes, funny looking phased arrays and dipoles supported on dozens of massive towers, I swear I could hear KOB in my teeth.
After driving through the entire site, we arrived at our final destination: the Sandia Nat’l Lab’s personal radio playhouse.
The guys began working on equipment, while I snapped photos and gazed in awe of the city of Albuquerque all within my field of view.
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| Chris, Ed, and Brian “working.” |
Brian took the job of tightening the D-STAR antenna, which he did adamantly, without falling, thanks to his fancy harness. It’s funny how dinky that antenna seems, but being over 3,000 ft ( 914m) above the rest of the world, it can see almost 100 radio miles (150km). With my 40w mobile radio, it comes in full signal in Socorro, NM, 75 miles (50km) away.
The team was successful of getting things done, cleaning up the shelves of an obtrusive monitor, keyboard and mouse (by going SSH only) and installing a NetIO internet-controlled AC power killswitch.
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| Before… |
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| After. Notice the new black box on the top right. That controls power for the whole thing via the web. |
The work was complete right on the dong of noon, and we had ribs for lunch. YUM! After that, Chris’s wife treated us to some homemade ice cream at his place, and we toured his shack, nestled on the edge of a HOA-restricted subdivision. That doesn’t stop him from loving ham radio!
Next on the list is to move this stuff to its permanent home on server racks. Sadly, I won’t be here, with only two weeks left in my VLA internship. I don’t wanna leave! 🙁
I would like to thank Ed James KA8JMW, Chris Aas NB5T and last but not least, Brian Mileshosky N5ZGT for taking me on this mighty heighty outing. Perfect timing for knocking another thing off my New Mexico to-do list.
The only part I forgot on that list was to bring a spectrum analyzer up there. It would have probably blown up in my hands.
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| Me, Ed, Chris and Brian on the edge of the crest. |
Upcoming SOTA Activation of W5N/BA-005 on 20 July
If you’re coming from sotawatch.org, welcome!
—Details—
Peak: W5N/BA-005 – 7284 [Socorro Peak]
Location: Socorro, NM, DM64mb
Time: 20 July 2013, 1700 UTC
Bands: anything I can manage. Likely 20m and up, and 2m
Mode: SSB preferred, but I want to try to muddle through some CW. I’ve never done CW without a computer (shame on me) so PSE QRS!
On 20 July, I plan to activate a nearby mountain for SOTA. This isn’t any regular mountain – the some parts of the road up to the peak is owned by EMRTC, or, simply speaking, its a bombing range. Therefore access is permit-only and this plan is tentative at the moment [edit — It’s a go!!]. However, at last night’s Socorro ham club meeting, I met a guy willing to be my escort, so I don’t get blown up, and to make sure I don’t steal anything, I suppose.
| Map of the area and the Summit. [http://sotamaps.wsstvc.org/] |
BA-005 is known as 7284 on the SOTA map, but the peak is commonly referred to as M-Mountain or Socorro Peak. A nearby peak which has a large, limestone M on it isn’t included in the database because it’s too near the taller peak.They only differ in elevation by about 60 feet.
This shorter peak is the home of the famous Elfego Baca Golf Shoot, where participants tee off at about 1500ft above and 2 miles awaythe hole. I think it’s a par 36 😀
Instead of golf, we’re going to shoot for some QSOs.
I’ll be using my new fangled End Fed Half Wave coupler and some conveniently placed towers. If those don’t work, then I’ll revert to some hamsticks. Stay tuned for more on the antenna project, and the summaryof the activation!
Announcing Technician License Class – Oct 19/26
Ham Radio Two-Day License Class
Monument, Colorado
Sat Oct 19 and Sat Oct 26 (8 AM to 5 PM) 2013
Location: Tri-Lakes Monument Fire Station 1
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 a $25 registration fee for the class.
In addition, students must have the required study guide:
HamRadioSchool.com Technician License Course $19.95
Advance registration is required (no later than one week before the first session, earlier is better!)
To register for the class, contact: Bob Witte KØNR
Email: [email protected] or Phone: 719 659-3727
Sponsored by the Tri-Lakes Monument Fire Radio Association
For more information on amateur (ham) radio visit www.arrl.org
or www.wedothat-radio.org
Pizza Box Computer Screen Sunshade
Its always difficult to see a computer screen in bright daylight. Here in Florida, there are numerous pavilions with roofs over them and that helps a lot. Something extra is usually needed on a bright sunny day. I had a pizza today and while I was waiting for it to come out of the oven at the Pizza shop, I asked the cook if I could buy a couple of extra boxes. I told her what they were for and she gladly gave them to me. The $4 tip didn’t hurt that situation I’m sure!
I’ll make the next one look prettier.
I’m sure that I’m not the first one to come up with this idea. But here is my version of the Pizza Box Sunshade.
The interior of the box is pretty dark. Note the clear packing tape holding the sunshade together.
I did this job by myself, so I didn’t have anyone to hold the box in place while I applied the tape.
Using ordinary paper staples was a mistake, they leave sharp places to stab your fingers with.
Cheap and workable, the Sunshade should last a while. I’ll collect pizza boxes to keep me supplied.
It took 3 Pizza boxes to make up this sunshade, and it was worth every bite of Pizza!
I took this photo with a flash to show the interior of the sunshade.
73 de AA1IK
Ernest Gregoire

































