There are many strategies for setting up wire antennas for portable HF operation. Heres mine.
Find my antenna matching units at https://www.k6ark.com.
If you’re looking for those little S-clips: https://amzn.to/3JQfh0Y
Most areas I operate lack trees, so the easiest way to get a wire in the air is to use a telescopic pole. I’ve developed a solid strategy for setup that I share in this video. if you’ve got a method you like better, tell us about it in the comments below.
Easier to build, versatile, and effective, the K6ARK QRP matching unit kits are now available. Here’s how to build it as an End Fed Halfwave.
First things first, if you’re building one of these kits, be sure to carefully read and follow the instructions at www.K6ARK.com. Kits can be purchased through Amazon. Here are some affiliate links:
Male BNC Kit: https://amzn.to/3G28lfD
Female BNC kit: https://amzn.to/3zhepOq
Build the kit into a matching unit of your choice, add wire, and get on the air.
If you have any questions or issues during your build, please contact me directly and I’ll do my best to help you succeed in your build. Thanks for watching, and have fun with the build!
The Arizona Summit-to-Summit 10 Point Madness event provides a great opportunity to push the limits of 2m simplex and see what’s possible over long distances. Although I didn’t set any new personal records on this trip, some great contacts were made and plenty of fun was had.
The yagi is a homebrew design made from U-channel aluminum, steel hardware, and arrow shaft elements. The matching network is made from parallel 1/4 wavelength sections of 75 ohm coax to transform the 28 ohm yagi impedance up to 50 ohms. Those coax sections are wound a few times through a toroid as a common mode choke.
The boom is about 8 ft in length when extended and folds down to 32 inches. total weight of the antenna is about 2 lbs, and the pool cleaning pole mast adds another 2 lb or so.
n August, I set out with 3 friends from the SAR team to spend 4 days in the hills, building and refreshing our mountain skills and visiting some amazing summits. Afternoon thundershowers limited us to only two summits, but they were fantastic.
First on the list was Thunderbolt Peak at 14,003′. It has an incredible summit with a technical summit block. The next day, we summited Picture Puzzle Peak, a first for me, and a SOTA summit which had never seen an activation.
The team was great, the trip was awesome, and I can’t wait to be back in the mountains.
GEAR I USE:
Cooking and water:
Aquamira Water Treatement: https://amzn.to/3zMl7f0
Squeeze Water Filter: https://amzn.to/3kXgatq (for smaller volumes/on-the-go)
Meat Shredz: https://amzn.to/3thD7v3
Canned Salmon: https://amzn.to/3BIFdaA
Dried Oyster Mushrooms: https://amzn.to/3zKy3ln
Freeze Dried Broccoli: https://amzn.to/2WMUU1J
Soup Vegetables: https://amzn.to/3zP2Qxx (good for mixing with other meals for flavor)
Outdoor Research Bivy: https://amzn.to/2YtGynh
Aricxi Tarp: https://www.aliexpress.com/item/32965526071.html?spm=a2g0o.productlist.0.0.4d956ca37vmoLN&algo_pvid=a2178fa8-0827-4432-9603-10c44a2a66f2&algo_exp_id=a2178fa8-0827-4432-9603-10c44a2a66f2-0
Bear Canister: https://amzn.to/3hm0CyH
Every year, the Mountain Rescue Team embarks on trips to the Sierra Nevada to train on technical terrain at high elevations. Each year, I organize a trip that I call Car-to-Car hell. It involves daily climbs up big mountains with overnight car-camping in between. This year, we climbed Laurel Mountain, 11,812′, via the NE gulley (aka Mendenhall Couloir). It’s a 3,000+ foot vertical "easy" 5th class climb. Most would want a rope for protection, but there aren’t many options to place gear, so most just free-solo the route, as we did.
It was a beautiful climb with a bonus SOTA activation at the top. So here’s the story. Hope you enjoy coming along for the climb.
On July 24, 2021, around 1830 UTC, some potentially incredible 2m simplex contacts were made between a station in New Hampshire and about 20 stations in Southern California. Those contacts may have been part of some kind of incredible propagation event. Or they may have been the result of happenstance, via a set of internet linked transceivers at each end of the continent. Check out the video and let me know what YOU think made these contacts possible.
Big thanks to the @SoCal Simplex Archive for allowing me to share his recording as part of my video. Please check out the links below for more of the audio.
First call from NE1B: https://youtu.be/hmuXBf0Himk?t=37670
First NE1B QSO: https://www.youtube.com/watch?v=hmuXBf0Himk&t=37865s
W2CAZ/M CQ call: https://www.youtube.com/watch?v=hmuXBf0Himk&t=38060s
Beginning of about 30 minutes of QSOs with NE1B: https://www.youtube.com/watch?v=JEIOhuhZyYU&t=4335s
Transmission with apparent packet loss: https://youtu.be/JEIOhuhZyYU?t=4419
Every year, the Central States VHF Society hosts a series of Sprint Sprint contests – one of which is a 50 MHz event. It’s a 4 hour contest with a point for each contact, and a multiplier of the number of 4-character grids worked. So I figured, I should probably operate from a SOTA summit for this event.
Spring Sprint Website: https://sites.google.com/site/springvhfupsprints/home/2021-information
0:00 Headed up the peak
1:42 Antenna intro
4:00 Telescopic Pole and Extended Double Zepp setup
6:19 Yagi Assembly and Setup
15:05 Contest Begins
Not fully satisfied with the size of my 3-element 6m yagi, I constructed a larger one… much larger, actually. It consists of a 4-section 5 meter folding aluminum C-channel boom, and arrow shaft elements. Spread out on the boom are 5 elements which give a theoretical free-space gain of about 8.5 dBd. At 12 ft above ground, with sloping terrain all around on a summit, I expected pretty solid performance. And that’s what I got.
For the contest, I set up two antennas: the yagi, and an extended double zepp – a high-performing wire omnidirectional vertical antenna. I had each connected to an Icom IC-7300 with a coax switch to quickly change antennas. It was awesome switching back and forth to compare signal strengths on each antenna from the same source. The yagi crushed the vertical for longer-range contacts, but closer stations were much more mixed, likely due to signal polarization.
Check out my Amazon store with lots of my favorite portable radio gear: https://www.amazon.com/shop/k6arkportableradio
Toss in some food, a bit of sleeping kit, and that’s about it. Villager Peak, W6/CT-096, is a remote 5,760′ summit with the nearest trailhead about 7 miles away at 900′ elevation.
I had activated Villager Peak before for SOTA, but a nearby summit, guarded by a steep descent and climb from the Villager peak ridge, remained unactivated. My goal for this trip was to activate that summit.
Hope you enjoy coming along for the adventure.
Interested in the gear I use? I have organized a bunch of it into an Amazon store: www.amazon.com/shop/k6arkportableradio