Posts Tagged ‘SOTA’

New Book: VHF, Summits and More

I am excited to announce the release of my new book: VHF, Summits and More.

This book is about having fun with ham radio, primarily on the VHF/UHF bands. It covers the basics of VHF, with practical tips for getting on the air and “messing around with radios.”  Topics include FM, SSB, repeaters, equipment, band plans, phonetics, portable operating, Summits On The Air (SOTA) activations and more. This book is a compilation of the best articles from the website plus some brand-new material.

The first section explains VHF/UHF concepts via tutorial articles such as “VHF FM Operating Guide,” “Getting Started on 2m SSB” and “How to Work a VHF Contest.” The second section includes blog posts from the website, such as “Choose Your 2m Frequency Wisely,” “VHF Grid Locators,” “Phonetic Alphabets” and “VHF FM: The Utility Mode.” The final section helps the reader understand mountaintop operating, especially Summits On The Air (SOTA) activations, including operating tips and trip reports.

The book is available from Amazon, in paperback and Kindle formats. The normal price for the print version is $22.95, but there is an introductory price of $15.95 through November 18th. The Kindle version is $9.95.



VHF, Summits and More
by Bob Witte, KØNR

Paperback Version
Kindle Version



The post New Book: VHF, Summits and More appeared first on The KØNR Radio Site.

First SOTA Activation of W0C/SP-020 (Talus)

While looking for our next SOTA adventure, I noticed a never-been-activated, unnamed 13er (W0C/SP-020) to the west of Mount Princeton. I checked various maps and it looked like there was a 4WD forest service road that went up to the adjacent saddle.  So Joyce/K0JJW and I decided to give it a try.

SP-020 as viewed from the saddle (and parking spot).

We took County Road 306 west out of Buena Vista, towards Cottonwood Pass. Then we turned left onto County Road 344 which goes to Cottonwood Lake. We continued past Cottonwood Lake until we found FS 348, also known as Hope Gulch Road. We followed this road for 5 miles to the saddle.

This graphic shows the 4WD road in red and the hiking route in purple.

The road was easy-peasy 4WD, no problem at all with our stock Jeep Wrangler. A Suburu-class SUV can probably make it but there are a few rocky spots on the road that will require special care. There were two water crossings, one of them with about a foot of water (across Cottonwood Creek).  Now this was mid-October, so the streams are not running real strong. Earlier in the year, this could be a major hazard.

Warning: water crossing at Cottonwood Creek.

A closeup view of the hiking path (0.6 miles, 800 feet vertical)

FS 348 is single lane, with long stretches without an easy passing or turnaround spot. We were happy that we only saw two other vehicles on the road.


We drove a bit past the saddle (where there is a small hut/cabin) and parked where a closed side road heads off toward the summit. We hiked up this closed and then vectored off towards the summit. The hike was only 0.6 miles and 800 vertical feet. However, there was quite a bit of talus to climb over which really slowed us down. The hiking route does not seem critical but following the top of the ridge seemed to be good.

Near the top, we encountered lots of talus.

Yeah, about the talus. It isn’t any worse than other rocky summits in Colorado but it seemed to catch our attention, usually in the form of “ok, I’ve just about had it with this talus.” A contributing factor was that both Joyce and I had foot/ankle injuries in recent years. So our unofficial name for this summit became Talus.

Joyce/K0JJW on the summit of W0C/SP-020
A pile of gear at the summit.

Joyce/K0JJW took the honors of completing the first SOTA activation of this summit by contacting Bob/W0BV on 2m FM. We also both logged these stations: KD0MRC, W0RW, W6JM, W0LSD and N0AJN.

Bob/K0NR operating 2m from the summit, wearing orange during hunting season.

We sat there quite a while just taking in the view. Mt Princeton is due east; Mt Antero and Mt White are to the south.

The view of Mt Princeton, five miles east of SP-020.

You never know what your gonna get on the first activation of a summit. On this one, it turned out to be a fantastic day. The weather was sunny, temperature about 40 degrees, a little too windy at times. Late in the season, we didn’t have to worry about thunderstorms moving in and blowing us off the mountain. I liked the combination of a good 4WD road, heart-pumping but not-too-difficult hike, a first-time SOTA activation and doing it all with my favorite hiking partner (and wife).

73 Bob K0NR

The post First SOTA Activation of W0C/SP-020 (Talus) appeared first on The KØNR Radio Site.

Hiking Mt Herman SOTA (W0C/FR-063)

Mount Herman (W0C/FR-063) is a popular Summits On The Air (SOTA) peak near Monument, CO. It is The Most Radio-Active Mountain in Colorado and recently popped onto the worldwide 50 Most Popular Summits. The summit elevation is 9063 feet (2762m) and the grid locator is DM79mb.

View from the summit of Mt Herman, looking out over the eastern plains.

Access to the summit is not difficult and most of the locals know how to find it without a problem. However, there are a few things that can trip up a first-time activator.

Most people will get to Monument via I-25, taking the main Monument exit (Exit 161). Go west on 2nd street through the old downtown area, over the railroad tracks to a stop sign at Mitchell Road. Go left (south) on Mitchell Road and then right (west) onto Mount Herman Road (FS 320).  Shortly after entering the national forest, you will probably see a sign that says Mt Herman Trailhead. THIS IS NOT THE TRAILHEAD YOU WANT. Keep going on Mt Herman Road.

Mt Herman Road angles left (going south) at the intersection with Red Rocks Drive. At this point, reset or check your odometer as it will help you find the actual Mt Herman Trailhead (see map below). Continue on Mt Herman Road for 2.6 miles, where the trailhead is off to the right as the road curves left.

The condition of Mt Herman Road varies considerably from year to year. Most of the time the road is OK for high-clearance 2WD vehicles. Sometimes it deteriates to easy 4WD. The road and trail are often usable in the winter months but it depends greatly on recent temperatures and snowfall. The road is not maintained in the winter so definitely 4WD required.


The actual trailhead is not that well marked, hence the need to watch the odometer. However, on most summer days, there will be cars parked at the trailhead. Parking is informal, just a gravel area off on the right side of the road.

The red line shows the trail to the summit.

The trail to the summit is 1.2 miles one-way and 800 feet vertical. Make sure you make the first turn,  about 500 feet from the trailhead, that takes you up the mountain. There is another trail that continues straight  at this point, which may throw you off.  There are a few steep sections where the loose granite marbles can make the trail slippery. Hiking boots with some tread on them are recommended and trekking poles can be helpful, too.

Typical trail section with Joyce/K0JJW hiking it.

At the summit, there is a fire ring where people sometimes camp out overnight. The hike is popular, so you’ll probably have other people stopping by. There is plenty of room in the activation area, so I set up my radio gear some distance from the actual summit.

Mt Herman is a wonderful hike with great views (even if you don’t want to do a SOTA activation). With a superb radio horizon, it is also first-rate place to make radio contacts.

73 Bob K0NR

The post Hiking Mt Herman SOTA (W0C/FR-063) appeared first on The KØNR Radio Site.

A Better Route Up SOTA W0C/SP-089

SP-089 has a large rock face on the south/southwest side, so it is best to approach from the other side.

Back in 2014, Joyce/K0JJW and I did the first activation of W0C/SP-089 (also known by its elevation: 10525). See the trip report here.

As noted in that trip report, we never did find much of a trail so we had to do some serious offtrail bushwacking. Being on the summit was great but bushwacking up was not. Later Walt/W0CP found a much better route using the Davis Meadow Trail. We definitely wanted to try this route and get back on top of that summit.

This overview of the area shows the route we took up SP-089 in blue and the Davis Meadow Trail as shown on the Trails Illustrated map.

We approached the Davis Meadow Trailhead from the east via Highways 285 / 24. We took FS 311 from Trout Creek Pass to FS 373, then FS 373A. FS 311 starts out in good condition, passable by high clearance 2WD vehicles. Later it turns into “easy 4WD” but it gets very steep in spots which may be a problem during wet weather. You can also approach from the west side coming up from Buena Vista. Check the San Isabel National Forest map for the complete picture.

Just to the east of the unnamed summit is a natural arch, marked on some maps as Aspen Arch. We’ve hiked up the arch on numerous occasions, often with visitors from out of state. So we’ve started referring to this unnamed SOTA as Aspen Arch, to differentiate it from the other unnamed summits in the area.

SOTA summit W0C/SP-089 is also known by its elevation (10525). A nearby landmark is Aspen Arch.

The Davis Meadow Trailhead is marked by a sign. Trail 1413 heads north and loops around the north side of SP-089. The trail is well laid out with plenty of switchbacks, much more than indicated on the Trails Illustrated map.

The blue line shows our actual hiking route as tracked by my GPS app.

We followed the trail until it looped around the north side of SP-089. Marmot Peak, another SOTA summit (W0C/SP-063), sticks out prominently to the north and is a good landmark to use for navigating. As shown on the map above, we left the trail and bushwacked south up to the summit. I don’t claim that our route was optimal. It was classic offtrail hiking with some areas quite open and others clogged with plenty of downed trees and rocks. (Next time, I think we’ll try to stay a little further east of our recorded track. It looked a little better over there.)

Joyce/K0JJW on the well-established Davis Meadow Trail.

The GPS app on my phone recorded the one-way hike as 2.7 miles and 1100 vertical feet.

This was typical of the downed timber on the bushwack portion of the hike.

We arrrived at the summit around noon and thunderstorms were moving into the area. We both made four quick radio contacts on 2m FM to get the activation points, then headed back down the trail.  The summit is exposed and very rocky but once we got off the top, we were hiking in trees with limited lightning danger. Thanks to Bob/W0BV, Jim/KD0MRC, Larry/KL7GLK and Kevin/KD0VHD for working us.

After our first bushwack adventure on this summit, we were not motived to activate this one again. However, using the Davis Meadow Trail has changed our opinion.  (Thanks Walt/W0CP!)  This route still has some offtrail bushwacking but it is not bad. We will be back!

The post A Better Route Up SOTA W0C/SP-089 appeared first on The KØNR Radio Site.

How Difficult Is That SOTA Summit?

When planning for the next Summits On The Air (SOTA) hike, I want to understand the difficulty of the climb. The main things to evaluate are the length of the hike (horizontal distance), the vertical (elevation) gain and other contributing factors.

Most of the SOTA summits in Colorado have a simple profile: pretty much uphill on the way to the summit and then mostly downhill on the way back to the trailhead. Yes, there may be flat sections and sometimes there will be a downhill section or two on the ascent, which means you give back some elevation gain only to regain it later. Usually, we think of going downhill as “easy” but if you have sensitive knees or other joints, you may disagree.

The first question is how far do I need to hike? Clearly, hiking 10 miles is a lot harder than hiking 1 mile, all other things being equal. However, I usually find the vertical gain to be more important. (Typically, the horizontal distance of a SOTA hike is within my capabilities and the vertical gain is my real concern.) I also do a back-of-the-envelope calculation on slope. My benchmark for slope is 1000 vertical feet in one mile, which is an uphill slope that will get my heart pumping but is not too difficult (corresponds to ~20% slope).  Anything steeper than that starts to feel more challenging. A slope less than that is easier.  Be careful with average calculations. You might find that a particular trail is flat for 3 miles and then gains all of the vertical in the last mile. Having a good topographical map is a must for understanding the route. I generally use GAIA GPS, an online mapping website and smartphone app.

Certainly the condition of the trail and its inherent terrain are an important factor to consider. The SOTA hikes I do are typically Class 1, 2 or 3. I don’t do summits that require ropes or technical climbing.

Difficulty ratings from

Class 1. Easy hiking – usually on a good trail.

Class 2. More difficult hiking that may be off-trail. You may also have to put your hands down occasionally to keep your balance. May include easy snow climbs or hiking on talus/scree. Class 2 includes a wide range of hiking and a route may have exposure, loose rock, steep scree, etc.
Class 3. Scrambling or un-roped climbing. You must use your hands most of the time to hold the terrain or find your route. This may be caused by a combination of steepness and extreme terrain (large rocks or steep snow).

Example summits

Let’s take a look at some specific summits as examples.

Note: there are often multiple routes to the same summit, so don’t use this information for trip planning. Do your homework.

Mt Herman (W0C/FR-063): a bit steep in spots but typical of many SOTA hikes: 1000 feet vertical gain in about one mile, right at my benchmark of 1000 feet vertical per mile. I consider that an easy hike.

Genesee Mountain (W0C/FR-194): is one of the easiest and enjoyable SOTA summits in Colorado, only 0.7 miles and 300 vertical feet. The average slope is 430 feet per mile, so not very steep at all.

Mt Sherman (W0C/SR-061): is considered to be one of the easiest fourteeners, but it is still a fourteener: 2100 feet vertical gain in 2.6 miles (807 feet per mile).

Mount Elbert (W0C/SR-001): A more challenging (middle of the road?) fourteener with 4700 feet vertical gain over 4.75 miles). The average slope is 1000 feet per mile so it’s not that steep but 4700 vertical feet will definitely wear me out.

Other Factors

Not to be overlooked, the condition of the route can make a big difference. Often, there is no established trail to a SOTA summit, which means you’ll need to hike offtrail or “bushwack”. If the ground is uncluttered and the trees well-spaced, bushwacking can be easy. On the other hand, if there is a lot of downed timber, you have to climb over and around obstacles to get to the summit. Some summits have willows or other scrub brush that gets in the way. Intense bushwacking can make a huge difference, making the hike more difficult by a factor of two (or more). Many times, I’ve looked at the route to a summit on a  topographical map, judged it to be not so bad and later discovered that it requires serious bushwacking. Hikes like that really help me to appreciate a well-designed and maintained trail.

High altitude and the resulting lack of oxygen contribute to the difficulty of the climb. This is going to vary considerably between individuals. Almost everyone feels the effects at 14,000 feet but at lower elevations individual performance will vary dramatically. Normally, I don’t have an issue at 10,000 feet, notice some effect at 12,000 feet and I’m definitely huffing and puffing above 13k.

Finally, weather can play a big role in increasing the difficulty of a hike. In the winter, it is common to use snowshoes when deep snow is present on the route. The snowshoes tend to sink into the snow with each step, causing more effort to be expended hiking the route. Ice can also be present requiring microspikes or other traction devices.

So that’s a quick look at how I judge the difficulty of a SOTA hike. The SOTA database often has trip reports from other SOTA activators, which can be extremely helpful. It is always great to learn from the experiences of other folks.

73 Bob K0NR

The post How Difficult Is That SOTA Summit? appeared first on The KØNR Radio Site.

2019 Colorado 14er Event

August 3 & 4, 2019
Saturday and Sunday

Amateur Radio operators from around Colorado will be climbing many of Colorado’s 14,000-foot mountains and Summits On The Air (SOTA) peaks to set up amateur radio stations in an effort to communicate with other radio amateurs across the state and around the world. Join in on the fun during the 28th annual event and see how many of the mountaintop stations you can contact. The covers the entire weekend but many mountaintop activators will hit the trail early with the goal of being off the summits by noon due to lightning safety concerns.

The event includes all Summits On the Air (SOTA) summits, which adds over 1700 potential summits! If you aren’t up to climbing a 14er, there are many other summits to choose from with a wide range of difficulty. See the Colorado SOTA web page at

Radio operators who plan to activate a summit should post their intent on the ham14er group via the ham14er website. Also, be sure to check out the event information at

Frequencies used during the event
Activity can occur on any amateur band including HF and VHF. The 2m fm band plan uses a “primary frequency and move up” approach. The 2m fm primary frequency is 147.42 MHz. At the beginning of the event, operators should try calling on 147.42 MHz. As activity increases on that frequency, move on up the band using the 30 kHz steps. Don’t just hang out on 147.42 MHz…move up! The next standard simplex frequency up from 147.42 MHz is 147.45 MHz, followed by 147.48 and 147.51 MHz.

For a complete list of suggested HF, VHF and UHF frequencies see this web page.

Warning: Climbing mountains is inherently a dangerous activity.
Do not attempt this without proper training, equipment and preparation.

There is a lot more information available here:

Sponsored by The Colorado 14er Event Task Force

The post 2019 Colorado 14er Event appeared first on The KØNR Radio Site.

VHF SOTA Near Fairbanks

Joyce/K0JJW and I were planning a trip to Alaska to visit several of the national parks. We had some time available while in Fairbanks to do some SOTA activations. We were traveling very light, so we took minimal SOTA gear: a pair of VHF/UHF handhelds and simple antennas.

The lightweight VHF/UHF SOTA outfit: Just a pair of Yaesu FT-1DR handheld transceivers, spare battery and basic antennas (rubber duck and RH 770).

We used my newly-fashioned antenna mount on a trekking pole we had with us. The trekking pole served us as as a trekking pole for hiking, a camera monopod and now an antenna support. It provides a handy way of supporting a vertical antenna and provides a little more antenna height when held up in the air.

The trekking pole with antenna mount attached. An RH 770 antenna attaches to the BNC connector on top.

I checked the SOTA database to identify easy-to-access summits near Fairbanks. There are several 1 and 2 point summits in the area with easy access. We were not looking for drive-up summits but we did want an easy hike.

I found that Dale/KL7R and Peter/K3OG had been activating in the area, so I contacted them via email and they both gave me helpful advice. We were a bit concerned about getting our four QSOs on VHF, but that turned out to not be a problem. We worked Dale from all three summits and he helped rustle up a few more stations to work. We had pretty good luck just calling CQ on 146.52 MHz. And I announced our presence and need for simplex contacts on the KL7KC repeater (146.88 MHz, 103.5 Hz tone).

We activated three summits:

Chena Ridge (KLF/FN-205)

We drove up Chena Ridge Road, then took a gravel road uphill towards the summit (I think it was labeled North Becker Ridge Road). At this point, we encountered a locked gate and parked there. Some locals wandered by and said that they hike up to the top every day, so come along. The hike was easy, less than one quarter of a mile with some elevation gain. At the summit is an FAA VOR site enclosed by a chain link fence.

Pedro Dome (KLF/FN-164)

Next, we drove north out to Pedro Dome, which has a substantial radio site on top. We took Steese Highway north from Fairbanks to Pedro Dome Road, a gravel road that goes right to the top of the summit. There are opportunities to make a wrong turn on the way up Pedro Dome Road but with a little care we were able to drive to the top. Despite the fact there are plenty of radio transmitters on the summit, we did not experience any interference on 2m and 70 cm. That summit has an excellent radio horizon, so it was easy to work stations in the Fairbanks area.

Bob/K0NR holds the trekking pole with RH 770 antenna attached, on Pedro Dome. The radio site is visible in the background.

Wigwam Benchmark (KLF/FN-204)

Wigwam Benchmark is a summit that pokes up just north of Fairbanks. It is a bit more difficult to navigate because it in a rural residential area with lots of twisty-turny roads. I plugged “Noel Drive, Fairbanks, AK” into google maps, which got us very close. Then we drove to where Noel Drive meets Mia Drive and operated from the road. The area is heavily wooded and we did get attacked by the famous Alaskan mosquitoes, so we made our radio contacts and escaped quickly.


At one point, I told Dale that if we made one contact from one summit, we would be happy. But, of course, we tried for more than that and got it. It turned out to be a great day running around these summits near Fairbanks and making some radio contacts. Thanks to KL7R and K3OG for the assistance!

73 Bob K0NR

The post VHF SOTA Near Fairbanks appeared first on The KØNR Radio Site.

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