Activation Report: W7O/CE-219 – Cline Buttes, OR | February 2023

This was my first mountain bike activation of the year. Tim [N7KOM] and another friend joined me for a ride/joint activation of Cline Butte after my last failed attempt in November of 2022. I wanted to do some exploring of a new trail system based out of the Cascade View Trail head that opened in the spring of 2022 and try to connect that system to the Cline Buttes trail via some old double track that looked passable on the map. I used OnX Backcountry app to build a route and we headed out.

OnX Offroad Planned Route

After making a wrong turn and correcting, we made it to the abandoned double track and began grinding through the soft sand. Fortunately another intrepid rider must have had the same idea and we were able to build upon the track already laid down in the soft earth and stayed aboard our bikes as long as we could, eventually forced to dismount and push up the steepest section of about 1/4 mile nearly straight up the hill. I opted to push through the brush, making impromptu switchbacks up the steep hill. We crested that last bit of shale and basalt onto the final road climb up to the summit.

Actual track from Garmin Connect

We quickly got started setting up, Tim with his Elecraft KX2 and AX1 had his 4 contacts before I could get myself spotted. I continually struggle with the MFA tokens when logging in from Sota Goat and was unable to get the timing of copying and pasting the token from my MFA app. Tim offered to spot me so I could get on with it. We had a non-ham along and the wind was picking up so I was trying to be sensitive to how long we were on the air. I’m a lot slower at setup than Tim, so once I got the Penntek 35R on the air and spotted I quickly had a pileup to work through.

One thing I keep forgetting about the Penntek is that the audio out jack is mono only, and I have a stereo headset so I can only hear in one ear. With wind picking up and other hikers walking around, I had some troubles. Those patient enough with my bad copy all got in the log. I’ve made a mental note that I need to apply the modification to the output audio jack before my next outing so I can hear in both ears.

After about 20 mins, the wind was starting to penetrate my thin shell, and my wool base layer was soaked from the work of the climb so once I had 6 in the log, I tore down and we discussed how to get back to the vehicles. There was a lot of unexpected mud and ice on the trails on our way out and trying to be a good steward, I suggested we take a less muddy route back. Unfortunately, a lot of the property surrounding the Buttes is private land so we chose to descend along the Cline Buttes XC trail to a point were we could access the Eagle Crest subdivision and wound our way back on paved paths and roads.

Our last stop was at one of the local brew pubs in Redmond, appropriately name Wild Ride Brewing, for a cold beer and some warm fish and chips. While the thermometer said it was 50 degrees, the chill we developed on the summit took a while to relent.

Cline Buttes is a moderate hike/ride, depending on your approach. The traditional mtb route is to start off the quarry road on the east side and climb the Cline Butte XC Trail around the west side interconnecting with FAA access road to the summit. There is a short cut near the summit that keeps you on the west side of the butte and drops you out right at several big rocks that are in the AZ and can provide some wind protection. 2M can work well but having had one failed activation for lack of 2M contacts, I highly suggest bringing and HF rig as well.

Activation Report: W7O/CN-074 – Round Butte, OR | January 2023

W7MTB on Round Butte


This SOTA summit is a paved drive up. Access is quite easy from Madras, to the East or Culver to the South. 

Madras to Round Butte

Hwy 97/Culver Junction to Round Butte

There is a large open area on the top of the butte to setup your gear. On the Saturday that I was there, I saw one pedestrian and one other car in the 3 hours I was there. There are some small juniper trees but I’d suggest bringing a mast of some kind. 

Working 17m CW from Round Butte

I worked several S2S on 2M with ops up on Frog Lake Buttes [W7O/CN-024], 4620 [ W7O/CN-090] 4925 [W7O/CN-086] then switched over to HF and worked scored another S2S from W6/SC-365 on CW. This was the first time I had deployed my newly build K6ARK End fed random wire tuned with the EmTech ZM-2


This would be an excellent introduction summit for new operators. I presents no physical challenge other than sitting in the cold and wind, but it has beautiful views and feels remote enough to be relaxing.

Resources: 

Penntek TR-35 4 Band CW Transceiver – First Transceiver Build

WA3RNC Penntek TR-35 4 Band, 5 Watt Transceiver

One of the things that drew me to amateur radio is the kit building aspect. Only weeks into the hobby, and before I had my hands on an HF rig I was ordering parts for an End fed random wire build I found on the AARL site. The first build went well but I haven’t been very impressed with the performance from the QTH. Since it’s a random wire antenna, it requires a tuner in the field, which I don’t have with me normally so it hasn’t seen much use.

I’ve built a couple of other antennas since with the K6ARK EFHW being my favorite but I wanted to up the challenge. I love the Icom IC-705 but its a bit heavy for SOTA Ops so I decided I wanted to build something smaller. I’ve been learning CW so I shopped for a really small, simple CW only kit. I looked at several packages and settled on the QCX Mini from QRPLabs. I ordered the package with the aluminum case and ACG module at a total of $84 before shipping, seemed like a good deal except for the 2 month wait.

Not long after I ordered the first radio I saw a video from Thomas, K4SWL, on the Penntek TR-35. I had looked at the radio previously but thought it a lot of money for a CW only radio that didn’t have any memory. One thing I love about my IC-705 is that is has 10 recorded memories for both voice and CW, which is almost a requirement for calling CQ lest one get a hand cramp in the field. Everything else about the radio looked fantastic, 4-Band, 5 Watt transceiver in a nice plastic case to reduce weight. There are a lot of features packed into this little radio and you can even have it assembled by pro’s at the factory if building isn’t your thing.  WA3RNC continually adds to the software and the latest update includes two memory channels that Thomas demonstrated during and activation and I was sold. I ordered a kit before finishing the video and it arrived in less that a week.

The kits is really, really well put together. The instructions are very clear and verbose. The parts are packed in sealed strips, with each step’s parts in a separate little “bubble”, so as long as you only open the current steps parts and complete that step prior to opening the next, you will never loose parts. I found this very, very helpful as this was the most complex kit I have assembled to date. 

The instructions are broken into four discrete parts:

  1. READ ME FIRST
  2. TR-35 Upper Board Assembly Instructions
  3. TR-35 Lower Board Assembly Instructions
  4. TR-35 Preliminary Checks, Tests and Final Assembly
Also included are a schematic and Operating Guide. 

This being a rather expensive kit, $279 USD, I didn’t want to screw anything up soI read through the entire assembly instructions and highlighted things that seemed important or would be easily missed. This is something I learned after a couple failed builds due to missing a detail because I misread or was in a hurry… doh! 

The entire build took me ~ 5 hours, though that was spread out across a couple of weeks as I had a trip and lots of work to do during that time. Usually when I build a kit I want to sit down and complete it start to finish so I don’t loose anything but as I mentioned previously, the way this is packaged made it easy to complete a step when I had 10-15 minutes of free time over the course of the build.  Since the toroids are pre-wound, it is mostly a soldering build. Having a good quality, heat controlled iron, good solder (Kester 60/40 lead) and flux (not a requirement) and side clippers are a must. The only other tool I used was my multimeter during initial testing. 

Once completed, I let it set for a few days so as not to rush the testing. I re-read the Preliminary Checks guide and made a checklist of each of the tests so I didn’t miss anything. Testing took me an hour or so, other than having to wait for new fuses for my Multimeter’s ampere testing circuit so I could do the Final RF amplifier bias adjustment. Everything checked out, so I decided to power it on and make the final adjustments before testing it on the air. With those final steps completed and the final assembly of the case, knobs, buttons, switch covers done, I hooked it up to the 20 M dipole I have on the roof and listened. I was astonished that it worked and I managed to not screw anything up. 

I’ve now had it out in the field a couple of times and used it in the backyard several times and am very impressed. My only gripe right now is that the output volume of the keyer and the overall output are linked, so when listening to faint signals I have to remember to turn the volume down before I key lest I blow out my eardrums. This may be something I can adjust but I haven’t investigated yet. I have made a couple of contacts on 20M and intend to do several SOTA activations in my neighborhood in the near future as well as build the QCX Mini and do a comparison. 
 

K6ARK End Fed Half Wave (EFHW) build and test

 I watched a video on the Ham Radio Crash Course about this very tiny and relatively easy-to-build antenna a few months ago and bought one right away from Amazon. It only took about 30 minutes start to finish, the hardest part being attaching the surface mount capacitor as the video describes. I have since use it pretty much exclusively when activating the in the field. I even had a SOTA SSB QSO with Adam, K6ARK, himself during a SOTA activation at Smith Rock State Park! 

I am using 18 gauge wire cut for 20M. I used my NanoVNA to tune and marked 10-20M on the wire with various colors of shrink wrap to differentiate the bands. I have a second length of wire that I added banana clips to connect so I can get up to 40M if I want to. If I want to use a new band I unroll from the Buddipole wire holder to the marking and check the SWR function on the IC-705 in the field and so far have had pretty good success. I’ve done several POTA and SOTA activations using SSB with the antenna. I love how simple and portable this setup is.

This is a great DIY antenna project, it simple to build and easy to use and I’d suggest it for anyone interested in field QRP activating.

K6ARK End Fed Half Wave QRP antenna with wire on Buddipole winder