Interesting QSO's with QRPp'er Alexey RT7O

ZA/AE5X

While making several activations of Alpet e Shqipërisë National Park (AL-0001) in northern Albania earlier this week, I had a total of three QSO's with Alexey RT7O. Each time, Alexey used a different QRPp rig.

A pleasant series of emails followed over the next couple of days as Alexey described and sent photos of the radios he used - all of which he homebrewed.

The receiver in each case was a Malamute transceiver and its antenna consisted of two 41-meter wires running down from a balcony (set at a 90-degree angle to each other) and sloping down toward a tree and a pole.

The transmitting antenna for the rigs described below was a 14 MHz sloper aimed westward.

In my case, the rig in use was a QRP Labs QMX putting 6 watts into a 1/4-wave whip attached to a magnet mount on the roof of my rental car. No ground radials.

I was surrounded by mountains on all sides and didn't know what to expect of my ability to make contacts from an area with no unobstructed horizon in any direction. To my surprise, contacts came fast and furious thanks to the ZA prefix. 

All QSO's were on 20m CW. 

For our first QSO, Alexey was using a  700 mW transmitter - built with two rod tubes - to mark the "First Earth Satellite" activity event:

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An audio recording of this QSO is here (I was using a QMX). 

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For our next QSO's Alexey used the absolutely beautiful 300mW designed around an old Soviet 6P15P tube. The schematic is shown here:

Activating AL-0001 with the QMX - and a bit of drone flying

Last year, Hans G0UPL rushed me a QMX at my request so that I could operate during an impromptu trip to Vietnam. As it turned out, it was impossible to get permission to operate and I've felt guilty ever since at having taken advantage of Hans' willingness to expedite the QMX.

But as of today the QMX has finally gone on a bit of a DXpedition.

I am currently near Theth Albania and have just returned from activating the unpronounceable-by-me Alpet e Shqipërisë National Park with the QMX.

The entire operation was on 20m CW. I was surrounded by mountains but was able to easily work a good number of Europeans and one US station (K2UPD) in New York. 

The QMX performed well.

I hope to activate the same park from another (better) location tomorrow.

Interesting contacts with QRPp'er Alexey RT7O - click here.

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5-band QMX on this morning's 5-band POTA activation

The little QMX has come a long way since it was first released as a CW/digital transceiver, and I don't just mean the addition of SSB.

Far more significant to me are the very recent firmware updates that corrected two major shortcomings with the radio:

Strict DC input voltage limitations and

Common failure of the final BS170's during high SWR at full power.

These two issues prevented the QMX (and QMX+) from being a serious consideration for outdoor ops who don't use resonant antennas and don't want to take along a buck converter, LiPo battery or place "dropping diodes" in series with the DC source.

Those are a lot of things to contend with if you want to just set up and be on the air with minimal fuss.

They are no real issue at all though, if you don't mind taking the time to accommodate the radio rather than have the radio accommodate you.

Sometimes I like to savor the steps necessary to put a station on the air and don't mind taking extra time (and steps) to enjoy the process.

But for a roadtrip like the one I have planned, I want a minimal to-do list and a quick set up time - and I'm happy to say that the QMX/QMX+ now support this.

This morning's was my first activation with the 15-40m QMX. Hans built this one for me and expedited it to me a few months ago as I was trying to get permission to operate in Vietnam and Thailand. Thailand said 'Yes" but Vietnam said "No, don't even bring a radio here". So I had to leave the radio at home since VN was our first stop.

Now, with a different type of trip on the horizon, the little QMX again has become the front runner of the 4 radios I'm considering. 

QRP rigs, pricing, and what's missing from most of them

A search of the mythical Ideal QRP Travel Rig For Vibration-Rich Environments has me, once again, pondering what's out there and coming to the same old conclusion:

That the Elecraft KX2 - manyyears (yes, one word) after its introduction - still has no peer. Eight years old now - a virtual eternity.

Like others, I watch the YouTube infomercials of the latest offerings, hoping to find my unicorn. But lately, rather than compelling me to open my wallet, they reaffirm the value of the radio released back in 2016.

Here's where I'm coming from vs. what's out there - a bit of a backstory (please bear with me):

Nine years ago, I rode most of the off-road motorcycle trail known as the TAT that stretched (at the time - it's longer now) from Tennessee to Oregon, on a single-cylinder Suzuki DR650. Single-cylinder bikes are often called "thumpers" for good reason. I made it to Utah before the obligations of still being employed called me home. That fact bugs me like you have no idea. I almost finished - but didn't.

I had two radios with me: an MTR-3 and an Elecraft KX2. Both performed admirably and survived single-cylinder vibration and the bike being dropped three times on Colorado's Ophir Pass.

A few thoughts on the QMX transceiver

 

A recent get-together of Central Florida POTA ops, led, of course, by Bill N4NYM, allowed me the opportunity of meeting a dozen or so kindred spirits at Lake Louisa State Park where I very much enjoyed seeing their set-ups and eating their food.

One of those in attendance was a newbie CW op, Glenn KO4NTA, and somehow Glenn and I got to talking about QRP. He had several rigs with him but the radio he most wanted to show me was his new Army-green (tr)uSDX.

"It costs about $100, covers 5 bands and is super tiny!"

That very statement - since it applies equally - got me to thinking about my inbound QMX, and I asked Glenn if he'd heard of it.

To my surprise, he had not heard of QRP Labs at all.

At that point, I think I may have unwittingly become a bit of a salesman. Glenn had not yet been on the air with his (tr)uSDX and I had not yet been on the air with a QMX. I do have a (tr)uSDX though, and have made a number of hard-won contacts with it on both CW and SSB.

I know the shortcomings of the (tr)uSDX and, now that I've made almost 100 contacts (and two POTA activations) with my new QMX, I have a pretty good idea of where it stands in the $100-Rig Department.