Tag Archives: POTA

Antennas, Field Reports, Morse Code, News, Portable, POTA, QRP

Pairing the Elecraft KX2 and AX1 with a little QRP Coffee for some proper portable POTA fun!

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Driving home on Thursday, December 8, 2022, I popped by Food Matters in Morganton, NC and grabbed one of their amazing curried chicken salad wraps.

I sat in the car and listened to a podcast as I ate a late-ish lunch. I looked at my watch and sorted out what time I needed to be back at my home in the mountains. After a little mental math, I realized I had about 90 minutes to fit in a little radio fun.

Where to go on a rainy day?

Tuttle Educational State Forest (K-4861)

Since it was a Thursday and I knew Tuttle would be open, it was really a no-brainer. Tuttle is only an 8 minute drive from the parking lot at Food Matters, so I made my way to Playmore Beach Road!

En route, I made a mental inventory of what radios and antennas I had packed in the car. I knew I had my KX2 and although its internal battery had already powered me through three or four activations already, I knew there’d be enough charge for one or two more.

Also, since it was raining, I thought it would be the perfect day to set up under Tuttle’s excellent picnic shelter.

As for an antenna, I remembered putting the AX1 in my antenna box, so why not pair the two and operate in the dry?

Coffee Time

Funny, but after I started recording the activation video (below), I convinced myself that I needed to make some coffee. I pulled out my field coffee kit and set it up for a quick brew.

The park had completely shut off all water fountains and closed the rest room area, so there was no place to get fresh water. Fortunately, I had *just* enough water left in my water bottle after lunch. Almost the perfect amount for a cup of coffee but no more.

This wasn’t a planned cuppa’ so I used one of my last Starbucks Via coffee packs. Had I planned this in advance, I would have ground some beans at home and made a pour-over coffee.

That’s okay, though. The Starbucks packs are better than no coffee at all.

Field Coffee Kit

If you’re curious about the contents of my field coffee kit, here’s the list:

Continue reading Pairing the Elecraft KX2 and AX1 with a little QRP Coffee for some proper portable POTA fun! →

Field Radio Kits, Kits, Morse Code, News, Portable, POTA, QRP, Reviews

Testing a new QCX-Mini Field Kit built in an Evergreen 56 Watertight case

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In early November, I happened up a new waterproof case called the Evergreen 56. As with Pelican cases, it’s waterproof and also made in the USA. Like Nanuk cases (that are also waterproof and made in Canada) Evergreen cases have a built-in locking mechanism to keep the latch from accidentally opening during transport.

I thought the price for the Evergreen 56 at $28 US was fair and in-line with the Pelican 1060 and Nanuk 903 which are similar in size. I grabbed one made of a clear material with one radio in mind: my QCX-Mini!

There are a number of color options available for this Evergreen case, but I like the clear polycarbonate one because it makes it so much easier to see what’s inside (for a quick gear check) but also to confirm that no one part of the kit is being pressed too hard inside the case after the lid is sealed.

After receiving the Evergreen 56, I was very pleased with the quality–again, on par with what I would expect from Pelican or Nanuk.  It is incredibly solid and the seal is watertight.  The Twist Lock Latch (see above) is easy to operate and the case comes with two “keys” for adjusting the inner lock.

The Evergreen case has a soft egg crate-like rubber boot interior as opposed to the pick foam material you’d typically find in a water tight case. The case also has a hammock-like rubbery webbing on the inside of the lid that can be used to organize smaller contents (I knew instantly I’d use this to hold the antenna!).

The QCX-Mini fits in the Evergreen case perfectly–this was no surprise–but I was eager to see if my other station components could also fit. Note that I didn’t buy anything specifically to be used in this case; I used components I already owned. I could minimize the contents even further if I used a smaller battery, antenna, and key.  Here are the components of the first version of the QCX-Mini Field Kit: Continue reading Testing a new QCX-Mini Field Kit built in an Evergreen 56 Watertight case →

Accessories, Hacks and Hints, How To, News, Portable, QRP

Rich’s easy-to-build and incredibly affordable Field Clip Board V 1.0

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Many thanks to Rich (KQ9L) who writes:

Hello Thomas,

I’ve attached couple pictures of V1.0 of my field clip board. I’ve been searching for the perfect clipboard to use in the field. The main requirements of the design include: lightweight, low cost and the flexibility to allow a comfortable operating position while securely holding a radio.

What I came up with is a based on an inexpensive fiber board clip board:

I chose to set it up somewhat unconventionally and designed it to use the clipboard “upside down”.  Setting it up this way provided ample space at the top to mount the radio while still providing room to attach a metal pad mounting point for paddles.

The radio is held securely in place with craft 3mm elastic bands. The bands were made with metal “toggles” so I can easily add more holes to the clipboard to accommodate varying rigs.

The metal pad is just a stick-on metal plate purchased from Amazon. I plan to add a leg strap in the future and will do so once I’m sure no other major modifications need to me made.

I’m pretty happy with the way the clipboard came out and would appreciate any comments or suggestions!

Rich
KQ9L

This is brilliant, Rich! I love both how affordable this board is and how easy it is to build. Having the clip at the bottom of the board is a fantastic way to secure your logging notebook as well. 

Thank you for sharing!

Antennas, Field Reports, Morse Code, News, Portable, POTA, QRP, SOTA

Testing a new Tufteln knee board and antenna during this beautiful SOTA activation on Mount Mitchell

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On the morning of November 4th, I woke up with one thought on my mind: “I need to activate Mount Mitchell before it’s too late!”

It’s not like Mount Mitchell was going to disappear, but I knew I was already on borrowed time since the long section of the Blue Ridge Parkway I use to drive to Mount Mitchell from Asheville typically closes in the early part of November for weeks at a time. The park itself will close to guests too–in fact, last year, it closed its gates as I drove out of the park! There are often other roads open to Mitchell in the winter, but they’re very much out of the way for me and frankly, weather can shift and the park close at the drop of a hat.

As the crow flies, Mount Mitchell is actually very close to my QTH. If I wanted, I could hike there directly from my home. I’ve yet to do this, however, because with the 3,000′ elevation change and the anything-but-direct trails that skirt the Asheville watershed, I’d need a full day or more to hike it one way. I will for sure do this sometime, but only when I can pack appropriately and reserve a campsite.

Morning drive

As soon as I surfaced that morning, I check the weather map. I noticed that the temp at Mount Mitchell was actually slightly higher than at my QTH. I looked out the kitchen window and could see fog in the valley. This meant one thing: inversion!

When we have inversion, the cold air is pushed down into the valley and warmer air can be found at higher elevations. The flip opposite of what you’d typically expect.

I ate a quick bite, grabbed come coffee, and hit the road.

As I drove past Warren Wilson College’s farm, it was absolutely gorgeous. I had to stop and take a photo or two [click images to enlarge].

The drive up to Mount Mitchell on the BRP was ideal: clear skies and quite warm!

Mount Mitchell State Park (W4C/CM-001 and K-2747)

In fact, I felt like I really struck it lucky that day. I didn’t even need a heavy jacket or gloves. Continue reading Testing a new Tufteln knee board and antenna during this beautiful SOTA activation on Mount Mitchell →

Antennas, Field Reports, Morse Code, News, Portable, POTA, QRP

Pairing the Elecraft KX2 and Chelegance MC-750 for a quick QRP POTA activation

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After a fun “discovery” activation with the TEN-TEN R4020 on the morning of November 12, 2022–click here to check out that report and video–I realized I had just enough time to squeeze in another activation on my way back to the QTH.

I picked Lake James State Park (K-2739) because it was the most conveniently located; only a 20 minute detour.

When I arrived, the park was very quiet even though it was a Saturday no doubt because the ground was still saturated after the two days of rains we received from the remnants of Hurricane Nicole.

I grabbed my radio gear: the Elecraft KX2 and the new MC-750 vertical antenna sent to me (at no charge) by Jesse at Chelegance. This was only the second time I’d used the antenna–the first time was with the X5105.

I knew the MC-750 would be quick to set up and that was a good thing because I only had a max of about 45 minutes for the entire activation including set-up and take-down.

I walked down to a picnic table by the lake and deployed the station.

The MC-750 took me all of three (casual) minutes to set up.

Next, I set up the Elecraft KX2 and my CW Morse Outdoor Paddle with Steel Base for one-handed picnic table operating.

Of course, I also needed to prepare a log sheet even though I planned to live log everything in the HAMRS app on my phone. Continue reading Pairing the Elecraft KX2 and Chelegance MC-750 for a quick QRP POTA activation →

Articles, Morse Code, News, Portable, POTA, QRP, QRP Radios, Reviews, SOTA

A review of the LnR Precision Mountain Topper MTR-4B ultra-portable QRP transceiver

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The following article originally appeared in the November  2022 issue of The Spectrum Monitor magazine:

A Review of the LnR Precision Mountain Topper MTR-4B V2

by Thomas (K4SWL)

I confess, there is something that I’ve come to believe is almost a rite of passage in the SOTA (Summits On The Air) community. And, no, I’m not talking about activating an All Time New One (ATNO) summit, or completing a particularly challenging activation on a snow-capped peak.

I’m talking about owning one of the iterations of the amazing “Mountain Topper” pocket-sized QRP CW transceivers designed by Steve Weber (KD1JV).

This little radio first caught my attention at a Four Days In May (FDIM) QRP conference over a decade ago: a ham friend in the SOTA community proudly showed me a very early version of the Mountain Topper that he built from a kit. The first thing that struck me was how impossibly small and extraordinarily lightweight it was. But when he showed me the 9-volt battery he used to power it––a power supply not only small, but convenient––I was mesmerized.

Over the years, the Mountain Topper has evolved.  There have been many models, ranging from two bands to five. To my knowledge, they’re no longer offered in kit form, but LnR Precision manufactures and tests these in North Carolina, and they’re better than ever in terms of features and performance.

At present, the MTR-4B V2––the second version of the four-band Mountain Topper––is the only model in production, and if you’re hoping to acquire one, due to supply chain issues (at time of publishing) there’s a rather long wait time. They retail new for $350 US, and frankly, the used ones I’ve seen posted in ham radio classifieds ads have been equal to, or even over, the listed price for a new rig.  Obviously, demand for these radios is much higher than supply.

So, how could it be that this minuscule QRP radio performs well enough to produce some serious DX from a remote summit…so well, in fact, that people are willing to wait in line for one?

Magic or method?

As any CW operator will tell you, the magic is in the mode. CW is such an efficacious mode that it cuts through the ether like a knife, even when conditions are less than favorable.

Obviously, pint-size radios like the Mountain Topper are QRP––low power––so designing them around such a simple mode is a very smart choice. CW transceivers are much less complex than a similar SSB transceiver, thus have less components, less mass, and are in general more affordable (when compared to those with similar receiver performance).

My comprehensive MTR-4B field kit (the MTR-4B is in the mesh pocket).

In addition, the Mountain Topper is designed with the field activator in mind:  specifically, SOTA activators, but of course, POTA (Parks On The Air), WWFF (World Wide Flora and Fauna), IOTA (Islands On The Air), or any other popular “-OTA” field activity. As a field activator in one of these programs, you are the DX. This means chasers and hunters are actively seeking your signal, and thus you are not competing with blowtorch stations to punch through a pileup.

I can also assure you that standing on a tall summit also gives you a brilliant starting point for your QRP signal. Some of the best DX I’ve ever worked has been from a summit.

So, for the average CW SOTA activator, QRP is preferred because QRO simply isn’t necessary––indeed,  in my opinion it’s a bit of an overkill. At least that’s been my experience now with my few hundred SOTA, POTA, NPOTA, SOTA, and even one Lighthouse On The Air activations.

So this brings us back to the wee Mountain Topper series and the model being reviewed here in the pages of TSM: The Mountain Topper MTR-4B. Continue reading A review of the LnR Precision Mountain Topper MTR-4B ultra-portable QRP transceiver →

Antenna Tuners, Antennas, Field Reports, How To, Kits, News, POTA, QRP

How to tune: Pairing the Emtech ZM-2 manual ATU with the Mountain Topper MTR-4B on the Blue Ridge Parkway

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You’ve no doubt heard me brag about the Emtech ZM-2 ATU in previous field reports. I think it’s an accessory every field operator should have.

The ZM-2 is a very capable manual transmatch/ATU and is also one of the more affordable tuners on the market. It’s available as both a kit and a fully-assembled unit. Both well under $100.

I do believe the “manual” part of the ZM-2 scares off some and it really shouldn’t. We are used to simply pressing a button these days and allowing our automatic ATUs to do all of the matching work for us.

Manual ATUs do require some amount of skill, but truth is, the learning curve is very modest and intuitive.

Manual ATUs require no power source in order to operate–you adjust the L and C values by hand–thus there’s never a worry about the ATU’s battery being depleted. They also are easy to manipulate outside the ham bands because they require no RF in order to read the SWR–you simply make adjustments to the L and C until you hear the noise peak.   This is why many shortwave broadcast listeners love the ZM-2 so much. It’ll match most any antenna you hook up to it!

I also argue that everyone should have a portable ATU even if you operate resonant antennas. Think of an ATU as a First Aid Kit for your antenna: if the deployment is less than ideal, or if you damage it in the field, an ATU can help you find an impedance match your radio can live with. ATUs have saved several of my activations.

Mountain Topper MTR-4B V2

I’ve also mentioned that I’ve had an MTR-4B on loan from a very kind and generous reader for most of the year. He was in no particular hurry for me to send it back to him, but I wrote him in early November and said, “I’m doing one more activation with this little rig, then I’m shipping it to its rightful owner!”

He had a request, and it was a good one:

I think it would be a good little twist to the usual YouTube if you paired a random wire with the ZM-2 and the MTR-4B…showing how to tune the ZM-2 with a Mountain Topper…

I really liked this idea, so I made plans to to hit the Blue Ridge Parkway nearby and give it a go.

The first time I tried this in the field, I paired the MTR-4B with one of my Sony amplified speakers because the MTR-4B 1.) has no internal speaker and 2.) has no volume control. During the video, however, I realized that there simply wasn’t enough audio amplification so that the viewer would be able to hear a noise peak as I manually tuned the ATU. I decided to scratch that video and just do the activation on my own. I really wanted to show how the tuning process worked in the video.

I went back to the field the next week–on November 10, 2022–with my Sony in-line digital recorder knowing it would be much easier to hear how the L/C changes affected the band noise. Continue reading How to tune: Pairing the Emtech ZM-2 manual ATU with the Mountain Topper MTR-4B on the Blue Ridge Parkway →

Antennas, Field Reports, Morse Code, New Products, News, Portable, QRP

Taking the new Chelegance MC-750 vertical on a POTA activation at Lake James State Park

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Back in September, I was contacted by Jesse Chen (BD7LLY) who has been a long-time reader of QRPer.com. Jesse is also the founder of Chelegance (a.k.a. JNCRadio): a company that has been producing ham radio gear and accessories since 2020.

Jesse reached out and asked if I would consider evaluating a couple of the field portable antennas he designs and produces in China.

In truth, I get a lot–and I do mean loads–of requests to evaluate products and I pass on 97% of them. I only have so much time and I simply don’t bother with gear I think is unnecessary or that could be cheaply made.

Before replying to Jesse, I did a little research on Chelegance and discovered that DX Engineering now distributes their products. I decided that if DX Engineering liked the quality well enough to add Chelegance products to their catalog, then it must be up to a decent standard. I’ve never purchased anything sub-quality from DX Engineering.

I also like the fact that Jesse is a real amateur radio operator.

After checking back in with Jesse, he decided to send me two of his portable HF antennas: the M-104 and the MC-750. In full disclosure, he sent these to me at no charge–i.e. free–with the idea I could do a proper evaluation and share my thoughts both with him and with my readers.

He knew that both of these antennas had the potential to compliment my style of portable operating. I also told Jesse not to rush ship them to me as I was quite busy. I received both antennas at the end of October.

The first antenna I wanted to try was the MC-750.

The Chelegance MC-750

When I received the parcel from Jesse, I was very impressed with the MC-750’s custom soft-sided case. The stitching and quality of it are much better than I would have expected. The interior is custom designed to hold all of the MC-750 antenna components. There’s enough extra space in it, in fact, that I can also carry a 40′ RG-316 feedline inside.

Product Photo by Chelegance

The antenna basically consists of the following components in the supplied padded bag:

  • A heavy stainless steel ground spike and matching unit
  • 40 meter coil
  • 50 cm antenna arm/extension
  • 5.2 meter telescoping whip
  • 4 yellow counterpoise wires with a wire winder board

The price for the antenna system is $250 via DX Engineering and 219€ via WIMO. Moonraker in the UK is also a Chelegance distributor, but doesn’t seem to have the MC-750 listed in their inventory at time of posting (Dec 5, 2022).

The only antenna I have that might compare with the MC-750 is the Chameleon CHA MPAS Lite which is one of my favorite portable HF antennas for its quick deployment, and overall quality. For reference, the CHA MPAS Lite retails for about $360.

I thought the best way to test the MC-750 would be to take it on a POTA activation. Continue reading Taking the new Chelegance MC-750 vertical on a POTA activation at Lake James State Park →

Field Reports, Morse Code, News, Portable, POTA, QRP, QRP Radios

Cheap POTA thrills with my new-to-me TEN-TEC R4020 QRP CW transceiver!

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Last year, I made an impulse purchase.

You’re shocked, right–?

Right.

You see, I did something I’d never suggest others do: in a moment of boredom, I casually cruised the classifieds listings found on QTH.com.

One of the very first listings was for a TEN-TEC R4020 CW QRP transceiver. The price, if memory serves, was $120 (+/- $10) shipped.

Ten-Tec Model R4020 (Product Photo: Ten-Tec)

Without even thinking, I sent a message to the seller:

“I’ll buy it if it’s still available!“

He responded noting I was the first to reply to the ad, so it was mine if I wanted it.

I did, of course.

The R4020 arrived that same week, I opened the box, applied power to confirmed it powered up, then placed it on the top shelf in my shack.

At the time, I had a mountain of review and evaluations in process along with several articles in the pipeline for TSM and one for RadCom, and simply didn’t have time to properly explore the R4020. I thought it might be fun saving it as a little reward for meeting my deadlines.

Then, frankly, I just forgot about the R4020. This spring was a very busy time for me family-wise, then I spent the summer in Canada, and most of this fall has been all about catching up after having spent the summer in Canada. Funny how that works!

Fast-forward to November 11th, 2022 when I was packing a field radio kit to take on an overnight trip and I noticed the R4020 on the top shelf! My reward, finally–!

I quickly packed the R4020 in my Spec-Ops Order Pouch along with a 3Ah Bioenno LiFePo4 battery and a power cable.

South Mountains State Park (K-2753)

On Saturday, November 12, 2022, I jumped in the car and headed to South Mountains State Park with the R4020.

This past year, I’ve mostly set up at South Mountain’s Clear Creek Access on the west side of the park, but this time I decided to make my way to the equestrian picnic area near the main entrance and ranger station.

Continue reading Cheap POTA thrills with my new-to-me TEN-TEC R4020 QRP CW transceiver! →

Field Reports, Morse Code, News, Portable, POTA, QRP, Videos

Mountain Topper MTR-3B: A quick POTA activation before leaving camp!

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View from Yonah Mountain the previous day.

As I mentioned in previous field reports, the W4G SOTA Campout was amazing fun this year.  I enjoyed hanging with Joshua (KO4AWH) as we activated a total of three summits and a few parks–plus it was great meeting so many fellow SOTA activators at the Saturday evening potluck!

On Sunday morning, October 16, 2022, it was time to pack up the campsite and hit the road.

Although I was a little pressed for time, I decided to fit in one more activation as Joshua packed up his tent and before we took down the 40 meter Tufteln end-fed half-wave.

Chattahoochee-Oconee National Forest (K-4473)

Fortunately, our campsite was within Chattahoochee-Oconee National Forest and since all I needed to do was to connect my rig to our campsite antenna, setup took all of two minutes.

I pulled out the Mountain MTR-3B for this activation. It had been quite some time since I used this wee radio because I had only recently finished a review of the MTR-4B V2 (look for that review on QRPer.com very soon).

The MTR-3B is now permanently at-the-ready inside my MTR-3B ultra portable field kit, but since there was already an antenna and key in place, I only needed the radio, power cord, logging items, and battery.

Continue reading Mountain Topper MTR-3B: A quick POTA activation before leaving camp! →