Tag Archives: QRP

Bob pairs the KX2 and AX1 for ultralight travel-friendly SOTA in Greece

Many thanks to Bob (K4RLC) for the following guest post:


Field Trip to Greece: September & October 2023

 Bob (K4RLC)

A trip to Greece had been on the bucket list for my YL Alanna K4AAC and me for several years. In fact, we had to postpone the trip twice due to COVID. An opportunity arose to take a unique trip to Greece with the University of North Carolina – Chapel Hill, rather than a more touristy cruise. It’s always good to have fellow Tar Heels around, to share experiences.

This trip involved a few days in Athens, seeing the classic archeologic sites such as the Parthenon and the Acropolis, as well as exploring the packed downtown markets, such as Plaka and Monasteraki Square. Then the group would travel to the South of Greece on the Peloponnesian Peninsula staying in a fishing village called Gytheio, founded in the 5th Century BC, and port to the Spartan warriors.   From there, there would be day trips to historic sites. These included a trip to Areopoli, where the Greek revolution against the Turks started in 1821. Another trip would be to Monemvasia, an island fortress founded in 50 AD.  Other trips would be to Mystras (the last outpost of the Byzantine Empire) and ancient Sparta. On the return trip to Athens for departure, the tour would stop in Ancient Corinth, which had been civilized by the Greeks by the 8th century BCE and where the Apostle Paul preached ethics to this Sin City of ancient Greece.

As I had taken the KX1 and KX2 to various places overseas, I, of course, wanted to operate portable radio  in Greece. Past treasured memories included enjoyment operating with the KX1 on Suomenlinna Island, in the Bay of Finland, and with the KX2 in various Caribbean sites, including St. Lucia in 2019.

One of the first things I did was to consult the SOTA Summits Database for peaks we might be near. In the Peloponnesian (PL) region, there are about 180 sites, many of which had never been activated. Once we got there, we found out why. The peninsula is extremely mountainous, with steep barren peaks up to 4000 feet, rising quickly from the shore. In fact, talking with Cristos, our guide in Areopoli and a local young man, he said that he and his friends would hike about 6 to 8 hours to a summit, then spend the night in a cave before returning home. Obviously, this would not fit in with our somewhat rigid tour schedule.

Olive tree grove & Taygetos Mountains
SOTA map of Peloponnesian Peninsula with Gytheio circled

I was very excited to see that Mt. Mystras, where we would visit, also was a SOTA site (SV/PL-012), as well as a UNESCO World Heritage Centre.

I found it curious that Mystras had not been activated since 2017. I found the name of the last ham who had activated this site, and took a chance of sending him an email at his QRZ address. I was very pleased to get a nice reply from Cristos (a common name in Greece, named after Saint, or “Agios” Christopher), who said that he lived in the north of Greece some distance away and had not been back. I asked him if he had to seek permission to activate there. Cristos said they just didn’t ask anybody, but that I should be “careful of the guards” as I’m not a local.

I took his caution under advisement and reached out to the Greek Radio Union. I received a very nice email from Takis, Vice President of the Greek Radio Union. He advised me that my call sign on the Peloponnesian peninsula would be SV3/K4RLC/P. That is, in Greece the geographic location of operation still matters, while it doesn’t in the United States. And I also should use the designator P, identifying as a portable station. Takis went on to write that radio operation in many the archaeological sites is now “prohibited” by the Greek Ministry of Culture and Antiquities. I filed that away for consideration.

The tour was culturally enriching, taking in the incredibly long and complex history of each ancient site we explored. Just as memorable, we were extremely well fed with local cuisine, including fresh fish caught that day, especially eating by the water in Limeni on the West Coast of the Mani Peninsula. I have to admit we ate spanakopita at least once for 10 consecutive days (it’s even served at breakfast)!

The trip to Mystras also included a trip to ancient Sparta, civilized in the 6th and 5th centuries BC. We were fortunate to have an archaeologist who is currently excavating Sparta as a guide to the fascinating history here. On the trip to Mystras, three miles to the west of Sparta, the bus stopped at the tavern where we would return to eat later that afternoon, for a pre-tour bathroom break. Bathrooms are few and far between in ancient sites, and most of our group could be considered geriatric and needed proximity to a bathroom. Mystras  is a 682 meter sharp  peak over the town (see photo). Continue reading Bob pairs the KX2 and AX1 for ultralight travel-friendly SOTA in Greece

Field Radio Kit Gallery: K8ZFJ’s TR-35 SUV Field Kit

Many thanks to Randy (K8ZFJ) who shares the following article about his portable field radio kit which will be featured on our Field Kit Gallery page. If you would like to share your field kit with the QRPer community, read this post. Check out Randy’s field kit:


Penntek TR-35 SUV Field Kit

Hello Thomas,

I built my field kit around the venerable Penntek TR-35, mounted in a Pelican-like case, including the

A single 3S LiPo battery with Anderson Powerpoles powers the TR-35 and keyer. All 53 , Rhode Island POTA parks were activated using no more than 4 watts.

The homebrewed EFHW antennas and feedlines are stored separately in an old camera bag. One End-Fed Half-Wave (40/30/20) uses the SOTAbeams Pico traps , another is a linked 20/17 meter variety. Both use stacked FT50-43 toroids to construct the ununs, mounted on plastic perfboard like winders.

The antennas have been deployed as slopers, supported by a 32′ telescoping fiberglass mast and mounted in wood and PVC holder that slips into the trailer hitch. This approach takes up minimal real-estate, is easy to set up and the operating position is either from the rear hatch or inside the vehicle.

72’s de k8zfj/Randy

Field Radio Kit Gallery: N1KDO’s Elecraft KX3 Field Kit

Many thanks to Jeff (N1KDO) who shares the following article about his portable field radio kit which will be featured on our Field Kit Gallery pageIf you would like to share your field kit with the QRPer community, read this post. Jeff writes:


N1KDO KX3 Field Kit

I like to take my KX3 with me on occasional travel adventures.

The complete field kit (click image to enlarge).

What’s in the kit? Well, that depends, but it is usually this stuff…

Clockwise from top center:

Readers: Check out Jeff’s webpage for more detail about components in his field kits!

TU es 72: A QRP Handshake…

Have you noticed a lot more POTA and SOTA ops ending their exchange with “72”–?

I have! And I think it’s brilliant.

When I started performing field activations in CW a few years ago, I gravitated from using 73 to 72 at the end of my exchange. I saw it as a simple and clear way to let the other op know I was running QRP.

I got so many questions about my use of 72, though (as in a few emails or comments per week) I finally wrote this blog post so I could link to it in my replies.

These days, I hear 72 being used routinely and I love it!

72 is like a simple calling card to tell the other op know you’re running QRP power.

It’s all the better when both sides sign with 72–then it feels more like a QRP handshake!

72 de K4SWL

Field Radio Kit Gallery: KI7URL’s (tr)USDx Ultralight Portable Kit

Many thanks to Jim (KI7URL) who shares the following article about his portable field radio kit which will be featured on our Field Kit Gallery pageIf you would like to share your field kit with the QRPer community, read this post. Jim writes:


(tr)USDx Ultralight Portable Kit

by Jim (KI7URL)

I like to take amateur radio with me wherever I go. In my backpack, I keep a Yaesu FT-60 (powered by 18650 batteries, but that is a different discussion). But I do not like to limit myself to VHF/UHF.

My wife, on the other hand, does not think my “go bag” should take up a significant portion of our suitcase when we travel. I did build a slimmed-down go kit with my Yaesu 891, but that was still north of 12 pounds (vetoed by Wife). Then, I made a go kit with my Yaesu 818, but that was still near the 10-pound zone (again, vetoed). I needed a slimmer package.

I turned to the likes of the QCX mini or other CW-only radios. The problem is that I still am far from proficient with my code, so relying only on CW was a bit more frustrating than I wanted it to be. The (tr)USDx, an open-source radio about the size of two stacked decks of cards, interested me in both price point and functionality. It has SSB, CW, and digital capabilities….on five different bands! Once it was in my hands, I had to build a kit around this new radio!

I want to keep my radio protected, so I started with a small dry box. On the inside, I printed a ‘redneck laminated’ (see also: packing taped) a quick setup guide for using the radio on digital modes if I ever have an in-field case of “the dumb.”

The radio is powered by a small RC battery. I chose this for size, weight, and availability (had it lying around from another project). When fully charged, it reads 12.6 volts. I added powerpole connectors to it because who does love powerpoles (be careful not to short the battery when adding power poles)? I have a small power adapter that goes from powerpoles to the 1.3mm connector so I can use my bench supply or other power sources without making another cable.

I have two antennas that I use (a K6ARK end fed and a QRP Guys No-Tune end fed with 26 gauge wire for 20m). But I like the QRP Guys one because I mostly do 20m and I think it was slightly lighter than the K6ARK antenna (don’t quote me on that though, I loaned the K6ARK one out and have not gotten it back). Plus, not having a tuner lightens my load as well!

Deployed for digital modes.

I have a retired smartphone in my kit that I use for some logging and some other ham-related apps, but mostly for FT8 using the FT8CN app. I also have WoAD on there and soon I hope I can get WinLink functionality with a small TNC as per this video by OH8STN. HF WinLink would be a good benefit with a lighter load than packing in a laptop or Raspberry Pi.

The kit weighs in at 2 pounds 6 ounces (just over a kilogram). This could be stripped down if I only did an SSB, Digital, or, gasp, a CW activation. But as it stands, the small form factor and low weight make the wife happy!

73,
Jim
KI7URL

Equipment:

Amazing POTA Fun: Pairing the Elecraft KX1 and AX1…but first, a little lunch!

I was speaking with my buddy Joshua (N5FY) in mid September. He’d recently acquired an Elecraft KX1 and the topic came up about pairing the KX1 with the AX1 antenna. I realized that in all of my experimenting with the AX1, I’d never paired those two. What!?!

Time to fix that!

On Thursday, September 28, 2023, I had a nice midday window to play radio. After dropping my daughters off at their classes, I stopped by the French Broad Food Co-op and grabbed a container of their chicken noodle soup from the refrigerator section.

I then made my way up the Blue Ridge Parkway (K-3378) to the Craggy Gardens Picnic Area at Bearpin Gap–one of my favorite spots on the BRP.

Despite stunning weather and the beginnings of fall foliage, the parking lot was pretty empty. After all, it was a Thursday and a good week or two before leaf-lookers descend upon western North Carolina.

I pretty much had the picnic area to myself (there was one other person there). I picked a picnic table at the top of the hill under the trees.

Mahlzeit!

When my wife and I lived and worked in Munich, the salutation I learned before any other was “Mahlzeit!” At Siemens, I remember walking through the hallways and people I’d never met before exclaimed “Mahlzeit!” as I passed by.

I quickly learned that Mahlzeit essentially meant “Lunch Time!” and I still say it today to my family when I’m about to make or grab some lunch. Funny how these things stick with you.

Now where was I–? Oh yes…

First thing I did at Craggy was set up my stove to start heating the soup. I show this in my activation video below.

If interested, here are the components of my stove kit:

Quick continuity check!

Next, it dawned on me that I would need to attach the AX1 counterpoise to the KX1. I didn’t bring one of my copper clamps to attach to the outside of the AX1’s BNC connector, so I needed to find another grounding point on the KX1.

I then remembered that the KX1 has two thumb screws on the bottom of the radio. Knowing Elecraft, I assumed that these screws could be used as an attachment point for a counterpoise, but I wanted to confirm that the screw itself had a direct connection to ground.

Fortunately, I keep a small multimeter in my supplemental gear bag in my car. It’s an inexpensive Allosun Pocket Multimeter. I use it for things like this: testing.

I set the multimeter to read continuity and then placed one probe on the outside of the KX1’s female BNC and the other on one of the thumb screws. Sure enough, there was a direct connection to ground. I didn’t need to worry about the KX1 chassis paint insulating the connection to ground because the thumb screw had a direct connection. Perfect! Continue reading Amazing POTA Fun: Pairing the Elecraft KX1 and AX1…but first, a little lunch!

Coffee, QRP, & Question: Is any field kit more portable and versatile that Elecraft’s KX2/AX1 combo?


Lately, I’ve been kitting out another fully self-contained field radio kit that would be small enough to fit in my EDC (everyday carry) laptop bag–something super compact.

I’ve been getting some great ideas from those of you who have added your kits to the Field Radio Kit Gallery.

[By the way, if you’ve submitted your kit to the gallery and haven’t seen it yet, note that I’m posting these in the order received and there are many in the pipeline!]

I’ll likely build my EDC field kit around the Elecraft KX1 or the Mountain Topper MTR-3B, then pair it with a good wire antenna.

My EDC laptop bag: the Tom Bihn Stowaway

But this process got me thinking: if money was no object, and I wanted the most compact and versatile multi-band field kit, what radio and antenna system would I choose?

My answer? A kit built around the Elecraft KX2 and AX1 antenna.

In my experience, the KX2 AX1 combo is hard to beat. It’s compact, effective, low-profile, and you can set it up pretty much anywhere.

Let’s explore my reasoning here keeping in mind–in my world–this is a very deep rabbit hole to go down. I’ll do my best–no promises–to keep this as concise as possible:

Compact, Low-Profile, Self-Supporting, and Simple

Here are all of the components of my typical KX2 AX1 field kit:

This is all that is needed for a field activation.

And if you’re an SSB operator? You don’t really need a microphone because one is built into the KX2 (that said, I’d suggest you build a compact mic if you plan to do a lot of SSB operating).

If I wanted to make this kit even a bit more versatile? I’d add a kneeboard to the list. This gives one the ability to operate without a picnic table.

I recently published a video showing how the KX1 and AX1 can fit on a kneeboard.

Portable and Versatile

What makes this field kit so portable is that the KX2 is one of the most compact general coverage HF transceivers on the market.

It’s certainly the most compact (at time of posting) when you realize that two important components–the battery and ATU–are internal options.

The AX1 antenna is also incredibly compact–it comes apart in such a way that no one component is longer than about 6 inches. What you see in the photo above is the entire radio and antenna system.

Yes: A Compromise

Sure–and let’s get this out of the way right up-front–the AX1 is a compromised antenna, and being a massive fan of simple wire antennas myself, I know a properly deployed wire in a tree is going to provide better gain each and every time.

Also, people who live in more remote parts of the world–say, Hawaii, the Yukon, or Perth, Australia–where the amateur radio density is sparse within their propagation footprint, the AX1 will not be as productive as it is for me here in the eastern half of North America. Continue reading Coffee, QRP, & Question: Is any field kit more portable and versatile that Elecraft’s KX2/AX1 combo?

The Arizona 10-Point Madness Summit-to-Summit Event

The Arizona 10-Point Madness Summit-to-Summit Event

by Charlie Brown (NJ7V)

“How can I accumulate a bunch of summit-to-summit points all at once, for Summits on the Air?”  This was a question Pete Scola WA7JTM had been pondering for years.  He initially thought it might be fun to choose several 10-point summits that were near each other, have a person operate on each summit, and then rotate to a new summit every so often.  Eventually, this idea gave way to the Arizona 10-Point Madness Summit to Summit event.  With an invitation from Pete, all willing SOTA participants gathered on a 10-point summit on September 19th, 2018, and 10-Point Madness was born!

The Arizona 10-Point Madness Summit to Summit event is a casual on-air gathering, where Summits on the Air participants set up their ham radio station on the top of summit . . .  at approximately the same time.  Operators are on simultaneously so that there is an overwhelming availability of summit-to-summit contacts to be made.  This event occurs every year on the first Saturday of October.

Fred (N7PN) 2023 10-Point Madness

There was a focus on 2-meter contacts the first year we did this.  We learned quickly during the 2018 inaugural event that it was true madness for 31 ham radio stations to contact 26 nearby summits all at the same time, especially on 2 meters.  We tried alternate 2-meter frequencies and even considered a net control operator.  However, in the end, we learned to just wait patiently for our turn to call for contacts on 2-meters, or if it was extra busy, we just moved off to HF for a while and returned later.  As a courtesy, we now monitor 2 meters and return to it throughout the event to give the operators a chance to come and go.

Adam (K6ARK) 2022 10-Point Madness

That first year was amazing.

We collectively made 1104 contacts, 354 of which were VHF.  And yes, we scored a lot of summit-to-summit points.  We averaged 140 points each, with a grand total of 4324 s2s points for all the Arizona stations.  We announced the event to several online platforms and invited others to participate, and had a few people join us from outside of Arizona. All of them had fun and saw good results as well.

Our 6th annual event concluded a few weeks ago.  Participation has been steady in Arizona but we have seen an increase outside of Arizona.  We had about the same number of Arizona participants as years past, but total contacts increased to 1403.  The average s2s points per participant increased to 169, with a grand total of 4906 s2s points.  I was amazed that Keith KR7RK earned 400 s2s points this year for this event – a new record, I think.  These are only numbers for Arizona participants.

I read on social media that Josh WU7H, who was participating from Washington state, had 55 total s2s contacts and only a fourth of them were from Arizona.  We received some statistics from stations in Georgia, South Carolina, Wisconsin, Texas, Nevada, Washington, Oregon and more.  It is a lot of effort to compile the statistics but it would be interesting to include people outside of Arizona in the future.

Joe (KE9AJ) 2022 10-Point Madness

Here are a few things that have stood out to me over the past 5 years for this event:

In 2019, Josh WU7H and DJ WW7D participated from Washington.  They won the award for most challenging activation in my opinion, operating from a snow packed summit in below freezing temperatures.  But that didn’t deter them!  They continue to come back year after year.  They are tough!

In 2022 my friend Adam K6ARK was participating on a summit in California.  I was able to make a 2-meter CW and SSB contact with him from my summit, 327 miles away.

Several others in Arizona also made contact with him.  While not record breaking, this is long haul for 2-meters.  And this year, I was able to make 19 DX contacts with one summit-to-summit into Germany.  It seems like there are a lot of DX contacts to be made every year, but this was a record for me.

Finally, this year Pete WA7JTM made a contact on every single band from 1296 MHz down to 1.8 MHz.  That’s 16 different bands.  How amazing is that?

The point is, you can make this event into whatever you want.  Experiment and try new things because there are people listening.  And of course, you do get a ton of summit-to-summit points.

WW7D on High Rock 2019 10-Point Madness
Josh WU7H and DJ WW7D operated from High Rock

Dave AE9Q sent an email out to the Arizona participants and inquired about the radios, antennas, and power sources used for the event and as you can probably guess, the list was very diverse.  I’m not exaggerating.  Just about every QRP HF radio, VHF/UHF handheld, Antenna, and power source you can think of was used – Log periodicals, mono-band double-bazookas, double zepps, whips, Yagi’s, end-feds, QRP and QRO HF radios of all types, HT’s with microwave capabilities, mobile vhf radios, amplifiers, lipo and lifepo batteries.  The list is long.

Sandy (W7NRS) 2023 10-Point Madness
Ray (W7USA) 2023 10-Point Madness

We recognize that other SOTA associations do similar events, like the Colorado 14er event and the Pacific Northwest Not Quite Fourteener event, to name a couple.  These are all great opportunities to get on the air and have fun with QRP radio in the field.

I’m sure you have heard about how amazing the SOTA community is.  If you get out on the summits or frequently chase, your call sign becomes familiar to others.  So much so that you feel a personal connection and sense of comradery every time you make contact with them.  During these events you see many of your good on-air radio friends.  It’s like a reunion.

The Arizona SOTA association thanks the many chasers and participants outside of Arizona who make this event more and more exciting every year.  We hope to see even more participate next year.  Just pick a summit, put your alert on the sotawatch.sota.org.uk web page, get on top of the summit and have a blast!

Readers: Do yourself a favor and subscribe to Charlie’s YouTube channel Red Summit RF. It’s chock-full of SOTA radio goodness. I’m also a fan of the All Portable Discussion Zone podcast–subscribe if you haven’t already!

Field Radio Kit Gallery: W7UDT’s QRP Labs QDX Digital Mode Field Kit

Many thanks to Rand (W7UDT) who shares the following article about his portable field radio kit which will be featured on our Field Kit Gallery page. If you would like to share your field kit with the QRPer community, check out this post.

Rand writes:


My Digital HF Field Kit…

by Rand (W7UDT)

Thomas & the gang… this is (de) Rand W7UDT

The QRP Labs QDX is yet another, brilliant creation from genius Hans Summers. Hans has created a cult following, with an assortment of kits, and assembled bargains of fun!

Many of you know this, and have his gear. And as sexy and alluring my Elecraft KX2 may be, it’s often, as a minimalist, that I reach for my QCX Mini(s), or my QDX (Hi & LoBanders).

I guess it’s a touch of OCD that compels me to minimize and simplify my field kits. (Yes, I need help!) And yet, if you too, upon reading this confession, find it all too interesting and read on.

Here’s the QDX field deployment in a nutshell…

Deploy the antenna, a LNR Precision Trail Friendly End Fed Wire. With a toss and some luck, the weight clears the chosen branch and the antenna is hoisted aloft.

Often I operate along the Boise River Greenbelt, just off the path near the river. I find that perfect spot to operate.

The flow of water, doesn’t make too much noise, and doesn’t matter with this mode, FT8. Only that it has a sunny view, and it’s comfortable and dry.

The QDX transciever & DC Pack is velcro’d to a clipboard, and once secured, I attach a 6′ section of RG316 and an inline 1:1 balun. The BNC coax is then connected. A trusted prussick knot, attachs the coax and clipboard, and provides the strain relief and work surface needed to operate.

8″ USB c/b cable connects the QDX with my Samsung Galaxy S20 Ultra, to the QDX. The transiever is powered by a 3aH 12v DC Pack of (3) 18650 LiFePo4 batteries. With the swich thrown, it archs to life. I then open the FT8CN app on my Samsung, select the Comm Port, and Wow! What fun!

The software does all the work, and even logs the contacts automatically. An occasional touch to the screen, can have you operating at will. It’s a free app on GitHub, that will pleasantly surprise and surpass any low estimations of ‘Free Chinese Stuff.’

All this can be viewed on YouTube, watch Linas LY2H.

Here’s my assembled field kit for my QDX (LoBander). I absolutely love this thing!

It’s a very tight kit. As simple as Hans ‘the Man!’ can make it. What a capable marvel of creative genius. Here’s a pic…

These modes offer error correction, and incredible Dx. The software function flawlessly, and automatically logs the contacts. Hang it high, and the antenna is happy! Easy, cheap and fun! 72 de W7UDT Rand

Notes ~ FT8, JS8 Call & RTTY Only, using the amazing & free FT8CN software.

Field Radio Kit Gallery: K6ARK’s Ultra Lightweight QRP Field Kit

Many thanks to Adam (K6ARK) who shares the following article about his portable field radio kit which will be featured on our Field Kit Gallery page. If you would like to share your field kit with the QRPer community, check out this post.


by Adam (K6ARK)

To me, the pinnacle of portable amateur radio involves Summits On The Air (SOTA) activations in particularly remote and hard-to-reach areas.  Many require long approaches, difficult climbs, and high-altitude travel to get there, so minimizing the size and weight of my portable radio kit is of utmost importance.  To that end, I’ve managed to refine my smallest fully functional kit down to quite a compact and light-weight package.

An MTR2B which operates on 20 m and 40 m.  It has been repackaged into a custom-designed 3d printed case is the core of the system.  It has been repackaged into a 3d printed case which cuts the weight of the radio by about 60% from the original aluminum and steel case, and shrinks it in thickness by about 50%.

The key is built-in to the rig – a capacitive touch design I adapted from the M0UKD design.

Brass cap nuts installed on the corner of the case provide the capacitive sense touch points for the left and right paddles.

A 9v form-factor rechargeable lithium-ion battery with a USB-C charge port powers the system.  The lower voltage reduces my transmit power to 2.5 or 3 watts, but also provides a bit more protection for the final amplifier transistors when my antenna setup is less than ideal.  It has sufficient capacity to run this power-efficient little rig for a few hours from a summit.

The antenna is a 40m End Fed Half-wave with a matching unit built from an FT50-43 size toroid directly onto an RCA connector and protected with heat shrink tubing.  28 ga PTFE insulated stranded copper wire forms the radiating element, and it’s stored on a down-sized 3d printed winder of my own design.

The primary components of the kit weigh in at just 4.8 oz (136 g), and the padded camera case adds another 1.8 oz (51 g).   Although the case isn’t particularly light, it provides excellent protection to the rig.

And because most of the summits I bring this rig to are void of trees, a compact telescopic pole is an essential addition.  The one I typically bring packs small and weighs in at just 5.5 oz (156 g) but provides about 10 ft of elevation above the ground.  The cap is leashed so I can’t lose it, and the tube is coated in heat shrink for protection when I cram it into the rocks for support.

In the end, it’s quite a capable kit for just 12.1 oz (343 g) of pack weight.

Check out my ‘Sierra Solitude’ video series as a prime example of a trip where this setup is perfect for my needs.

73 DE K6ARK

Readers, do yourself a favor and bookmark Adam’s YouTube channel which is chock-full of SOTA and ultralight radio goodness!