Tag Archives: QRP Radios

A Strong Case for the (tr)uSDX: Jamie’s Perspective

Readers, there’s a bit of a backstory to this guest post by my friend Jamie (AA4K). During the W4SOTA campout in October 2023, Jamie showed me his favorite field radio: the (tr)uSDX. I’ve used the (tr)uSDX for a couple of activations, but I’ll be honest—I haven’t exactly shown it a lot of love. I’ve even complained about its audio and receiver performance in the past. Jamie, on the other hand, really enjoys using his and makes a solid case for it as a field radio.

Jamie showing me his (tr)uSDX during the W4SOTA campout.

I asked if he’d be willing to write a guest post for QRPer, and he agreed (eventually!). When I saw him at Hamvention this year, he told me the article was ready—and in true form, he sent it to me via Winlink… using his (tr)uSDX.


A Case for the (tr)USDX

by Jamie (AA4K)

Introduction

There are many factors that must be considered when choosing a field radio. How big and heavy is the radio? How hard is it to repair or replace the radio if it becomes damaged or lost? How hard is the radio to operate? How power-efficient is the radio? Does the radio have the desired/required modes and features? Of course, the most fundamental question is, “Does the radio work?” I will try to answer these questions as I lay out… a case for the (tr)USDX as perhaps an almost perfect field radio.

The last two contacts on this page were with my friends Carlos (KB4CO, now AE2W) and Thomas (K4SWL).

How big and heavy is it?

The first question is an easy one. Aside from small home-brew radios such as K6ARK’s “Choking Hazard”, there isn’t a smaller or lighter commercially available radio out there that I am aware of. The (tr)USDX measures 112 x 61 x 50 mm (I trimmed the encoder post and used a lower profile knob), and weighs 5.3 oz, or 151 g. The next closest currently available commercial radio is perhaps the QRP Labs QMX. This radio is very comparable in size (110 x 64 x 38 mm) and cost, but it does weigh more at 7.3 oz, or 207 g. The more rugged metal case probably plays a big part in the weight difference.

(tr)USDX with a modified case I designed to use the radio as the antenna winder.

How hard is it to replace or repair it?

The (tr)USDX is often sold as a kit for about US$86 (+$20 for the case) [QRPer affiliate links]. Any repairs should simply involve desoldering affected components and replacing, or possibly just updating the firmware. I am a relative noob when it comes to kit building and this kit is honestly not very difficult to build… about one day. The instructions and support videos provided by the hardware developer, Manuel DL2MAN, are very thorough. I learned a lot about radios from building the kit. If you have no interest in kit building, the assembled radio can currently be purchased from Amazon for US$138, complete with a case. Whether purchased as a kit, or already built, the band pass filters on the radio board will need to be tweaked to get the most out of your radio.

How hard is it to operate?

The (tr)USDX only has 4 buttons including the rotary encoder: Menu, Encoder, Enter, and PTT. The Menu and Encoder cover the majority of the adjustments, and most of the time I don’t use the Enter and PTT buttons. The PTT functions only as a ptt or cw key depending on the mode (yes, if your key breaks mid activation, you have a built-in backup key). The single-layer menu system is simple to scroll through, and the most commonly used items are near the front of the menu.

The most challenging aspect of operation for some people is the tiny OLED screen which gets obliterated in bright light. Reading glasses do help, although when you become familiar with the menu are not as important. I would love to see a version with an e-ink display and, more importantly, a push-button wheel rotary encoder (to remove the protruding knob).

How power-efficient is it?

This radio sips power. I tested the radio I built using a LiFePO4 battery that supplied 13.56v. The current draw on receive is 66.1 mA, and 570 mA on CW keydown into a dummy load. A properly tuned (tr)USDX delivers about 5w on each of the five bands when fed ~12v. A set of three 18650s in series will provide the proper voltage and power the radio through many activations.

Does the radio have the desired/required modes and features?

The (tr)USDX is not for princesses. It is a minimalist’s radio. But if you start from the perspective of an ultralight backpacker who has to justify every gram in their kit, this radio checks all of the boxes. It is a five band radio (Low, Classic, and High band models available). It is capable of doing voice, cw and digital modes. Thanks to a beta update from the firmware developer, Guido PE1NNZ, this radio will interface with a computer without requiring a soundcard. One of my favorite features of the radio is the built-in SWR meter. With the SWR feature enabled in the menu, just put the radio in CW mode and press the PTT to find out if your radio is happy with the current antenna arrangement.

This photo was taken while sending the text of this article via Winlink to Thomas, K4SWL.

Does the radio work?

Although my total activation count is nowhere near as high as many of you, I have used the (tr)USDX for a majority of my successful POTA (156 as of this writing) and SOTA (72 as of this writing) activations. My confidence in this little radio was demonstrated when I used it on an ATNO activation of Admiralty Island National Monument (US-4537) in Alaska.

Conclusion

One reason why I like to participate in SOTA and POTA is that it gives me an opportunity to practice field radio deployment and operation with the goal of being ready to communicate anywhere and anytime. This level of readiness means that I have the necessary equipment with me all the time. For me, the (tr)USDX is my EDC (every day carry) radio. It can bounce around in my backpack (in its protective case, of course) and be ready to deploy if needed. If it were to get lost or broken, I can fix or replace it easily. And I find it to be easy enough to use with the understanding that it isn’t a luxury radio.

The author at ~11,000’ in Uncompahgre National Forest.

Video

Click here to view on YouTube.

(tr)uSDX Winder Case:

Click here to download the print file for Jamie’s the modified (tr)uSDX case.

Chilly Morning, Hot Pileups: Testing the New MTR-3B “Currahee”

In late December, I received a much-anticipated package from LnR Precision: my new MTR-3B V4 “Currahee.”

Life has been hectic, so I didn’t get the opportunity to take it to the field until Thursday, January 9, 2025, when I carved out some time in my schedule.

It was a chilly morning, with temperatures hovering around 20°F (-7°C). Still, I wanted the full field portable experience with the new Currahee, so I bundled up in my winter gear and headed out.

Pisgah National Forest

Rather than doing another activation on the Blue Ridge Parkway, I checked the Pisgah National Forest website and was pleasantly surprised to find that the Lake Powhatan recreational area was open.

When I arrived, the park employee at the entrance gate informed me that I was the only guest that morning. And what a morning it was! Despite the cold, the clear skies and full sunshine made it a glorious day.

The best part? No competition for picnic tables! Woo hoo! (We must embrace the positives, right?)

Quick field kit

About 10 minutes before leaving the house, I hastily put together a quick field kit for the Currahee in my Pelican Micro M50 waterproof case.

This was a trial run to see how I might organize a fully self-contained kit for the Currahee, similar to what I’ve done for my other MTR-3B radios. While I didn’t have time to finalize all the kit components, I wanted to gauge the space available and determine what antenna, throw line, and other accessories would fit best.

Tufteln Cover

Joshua (N5FY), a good friend, sent me a package over the holidays containing some of his latest Tufteln protective radio covers. To clarify, these were gifts; I didn’t pay for them. Among the covers was a brand-new design specifically for the Currahee.

Like all of his covers (you’ve probably seen the ones I use for my KX2, KX1, CFT1, QMX, and others), this one fits brilliantly. In fact, it might be my favorite! The Currahee cover provides a durable, low-profile solution that complements the radio perfectly. Makes it a very durable little package.

Break-In Activation

In the near future, I plan to create a more in-depth video about the Currahee, but my goal for this outing was to get it on the air and give it a solid break-in.

Although the Currahee features built-in capacitive touch paddles, they require contact with bare skin. I wasn’t keen on exposing my fingers to the cold, so I opted to use my trusty TP-III paddles instead. By the end of the activation, my fingers were still getting sluggish, but I managed to log plenty of QSOs.

For audio, I paired the Currahee with my Anker Soundcore Mini speaker and connected it to a 40-meter End-Fed Half-Wave antenna. This antenna is an ideal match for the Currahee since all three of its bands—40, 20, and 15 meters—are resonant. Kudos to LnR and Steve for these excellent band choices!

For power, I used my 9V Bioenno battery. While the Currahee can handle over 13VDC (making it compatible with a “12V” LiFePO4 battery), I prefer running my Mountain Toppers with 9V, which yields about three watts of output power.

Gear:

Note: All Amazon, CW Morse, ABR, Chelegance, eBay, and Radioddity links are affiliate links that support QRPer.com at no cost to you.

Radio

Key and Accessories

Antenna, Throw Line, and Cable Assembly

Battery

Case and Pack

Logging

Camera, Mics, Speaker, Gloves and Other Accessories

On The Air

I started the activation on 20 meters, which turned out to be a fantastic choice. Continue reading Chilly Morning, Hot Pileups: Testing the New MTR-3B “Currahee”

The New Venus SW-6B QRP Transceiver: First POTA Activation and Field Test!

Yesterday morning, around 12:00, I picked up a DHL parcel containing the Venus SW-6B. I was so eager to test it in the field that I dropped my lunch plans, took the SW-6B home, opened the box, and quickly attached Anderson Powerpole connectors to the supplied power cable.

I didn’t have time to do anything else, not even turning on the radio.

After doing some back-of-the-envelope calculations, I realized that if I skipped catching up on my email backlog (sorry!), and instead jumped in the car, I could fit in a one-hour activation on the way to visit my dad in Hickory, NC, that afternoon.

Not wanting to compete for the one picnic table at the South Mountains State Park Clear Creek access (the fastest detour), I decided to head instead to the Lake James State Park Catawba River Access en route. There are plenty of site options at Lake James, and mid-afternoon on a Tuesday, I knew it wouldn’t be crowded.

Lake James State Park (US-2739)

The weather was absolutely beautiful, and I was right: there were very few people at Lake James.

I left the QTH in such a hurry that I didn’t have time to gather all the components for the SW-6B field setup. Instead, I grabbed my SOTA backpack (which should, in theory, have an antenna, cable assembly, throw line/weight, key, and other necessary adapters and accessories).

I found a picnic table with plenty of antenna deployment options (i.e., trees!).

Luck was on my side, too: my first throw of the throw line made a perfect arc into a tree, giving my 40-meter end-fed half-wave an ideal configuration.

While deploying the antenna, a groundskeeper nearby started mowing a patch of grass with possibly the noisiest mower I’ve ever heard. 🙂 It was so loud I actually had to wait for him to move on because I found myself shouting at the camera mic. Ha ha!

As I mention in the video, this is just the kind of QRM you should expect at a good park. The grounds at NC parks are truly outstanding, which takes a lot of work, and I’m very appreciative. It was just a minor inconvenience.

SW-6B Setup

After deploying the antenna, I set up the SW-6B and spent some time in the video (below) explaining the front panel controls.

I noted in the video that I purchased one of the very first production models listed on the Venus website.

There are a few options available: a metal case, a plastic case, and with or without an internal battery pack.

At the time, Dale (BA4TB) only had the metal case version built, so that’s what I ordered, with an internal battery. It’s the priciest option. The total cost, including DHL shipping to the US, was $344.30.

The metal case is very basic. One downside is that it doesn’t have a positive latch—there’s no easy way to secure the lid. For example, if you turn it upside down, it will open. The plastic version has latches—knowing this, I would have much preferred the plastic case.

That said, the metal case has a lot of charm. I plan to secure it with an elastic band or see if I can adapt mine to a plastic case later.

The internal battery didn’t come fully charged, of course, but it showed 11.3V, which is well within the SW-6B’s voltage range. Knowing this would be a short activation, I opted to use the internal battery instead of grabbing my (comically large, compared to the SW-6B) 15Ah battery from the car.

After turning on the radio, I was pleased to find that the internal speaker provided plenty of amplification for field operations.

It was time to get the SW-6B on the air!

Gear:

Note: All Amazon, CW Morse, ABR, Chelegance, eBay, and Radioddity links are affiliate links that support QRPer.com at no cost to you.

On the Air

I started calling CQ POTA on the 20-meter band and quickly discovered that propagation was unstable.

That said, for the first time ever, my first three contacts were all Canadians: VA3NU, VA2CT, and VA2IDX. Nice! Continue reading The New Venus SW-6B QRP Transceiver: First POTA Activation and Field Test!

WN5C: Notes from a homebrew POTA adventure

Many thanks to Sam (WN5C) who shares the following guest post:


Notes from a homebrew POTA adventure

Sam (WN5C)

I recently wrote about the homebrew transceiver I built to operate on a month-long trip through the American Southwest. Upon arriving back in Oklahoma here’s the final outcome: 27 days, 40 parks, and 669 QSOs. I honestly can’t believe that the rig went the distance, or that I made so many contacts on 2 watts or less!

The priority of this trip wasn’t radio, though. I’m an archaeologist and I’m starting a new research project that marries my historical interests with my love of two-way communication. In short, I’m studying the effects of how communication technology aided the American colonization and transformation of the western United States around the turn of the twentieth century. This means I walked and mapped single-wire telephone lines strung up in pine trees in northern New Mexico (used to connect fire lookouts with Forest Service ranger stations), a fascinating story of dramatic changes in land management. I also visited heliograph (sun-mirror signaling) stations established in southeastern Arizona by the U.S. Army Signal Corps in 1886 to assist in apprehending Geronimo.

Working Fort Bowie NHS (US-0815) in Arizona. The peak in the distance, Helen’s Dome, had a heliograph station on top. From the fort telegraph lines would have connected remote operations to the rest of the Army’s 1880s communication network. Next time I’m climbing up on top!

I look forward to relocating and studying the artifacts from more of these heliograph sites (mostly on remote peaks) to reconstruct this communication network and understand the lives of both the soldiers and the Apache, and how this novel surveillance system altered the battlefield. Based on the artifacts I’ve seen so far there are many cans of Army-issued proto-Spam and beer bottles surrounding the signaling station where American Morse Code would have been sent and received via flashes of sunlight. The original Field Day?

But back to radio. I covered a lot of ground and activated parks in Oklahoma, Texas, New Mexico, Arizona, Utah, Colorado, and Kansas.

The POTA sites that I activated (click image to enlarge).

At some locations I was camping so I was able to do multiple long activations and work the lower bands well into the evening. These were some of my favorite moments of the trip, being the only spot on the POTA app and leisurely working with no time or weather-based worries. It also gave me a chance to hear callsigns I was unfamiliar with, essentially exploring a new area of the country.

Working closer states after hours on 30 and 40 meters at Colorado NM (US-0918).

For other times, due to time constraints or weather (thunderstorms or that it was unbearably hot), I got my 10 contacts and moved on. Sometimes I packed the equipment for a long hike, often carried it from the car to a picnic table, and a few times deployed my antenna and operated from my vehicle.

Not every activation was a grand adventure. Sometimes, like here at Rocky Mountain Arsenal NWR (US-0226) in Colorado, I worked from the passenger seat in the car.

Every activation was memorable in its own way. I worked folks from 44 states, five Canadian provinces, and an unforgettable contact from Italy.

A map of the contacts I made (not including those in northern British Columbia, Alaska, and Italy).

The radio held up surprisingly well. Aside from it looking like a Dalí painting as the 3D printed box continued to deform in the heat, and some hot glue remelting, the electronic components worked as they should. I look forward to printing a stronger case and making some upgrades going into the fall. I do now have a real respect for the engineering that goes into designing field radios, especially those that are thrown into a pack!

Setting up a portable shack on Vail Pass in the White River NF in Colorado (US-4410). This was near the end of the trip, the plastic case was looking pretty bad.

After I began feeling less anxious about the homebrew radio (it kept turning on!) I could start focusing on the trip itself: an amazing POTA adventure with an often-uncooperative sun. Here’s a few themes I noted. Continue reading WN5C: Notes from a homebrew POTA adventure

There’s a Venus SW-6B on the horizon!

Many thanks to Dale (BA4TB), who reached out this morning to announce that he’s working on a new product, the Venus SW-6B.

Dale gave me permission to share the following photo:

This will be a six band radio with a built-in rechargeable battery and small speaker.

The front panel reveals some other features:

  • Dedicated CW speed control
  • Dedicated AF and RF gain controls
  • Separate charging and external power ports
  • Two dedicated CW message memory buttons
  • It also appears to be enclosed in a case with lid

It’s still in the early stages of development, so some details may change, but I think this looks quite promising! I’m very impressed with the Venus SW-3B, so I suspect this will be a great little radio.

Just take my money, Dale!

Speaking of which, this radio is still in development, so I don’t have pricing or availability information yet. When those details are available, you’ll hear it here first! Follow the tag: Venus SW-6B

I’ve said it before and I’ll say it again: there’s never been a better time to be a CW operator!

Sam’s Thunderbird Mk 1 Takes Flight: A Homebrew Radio Field Report from the American Southwest

Many thanks to Sam (WN5C) for sharing the following guest post:


Homebrew in the Field

by Sam (WN5C)

What a week it’s been!

I have the opportunity to spend a month traveling through and camping in the American Southwest (specifically, New Mexico, Arizona, and Colorado) doing archaeological work. And of course, that means the prospect to operate portable at weird times and in lots of places.

I’ve been planning for this trip for a couple of months, about the same length of time that I’ve been trying to achieve my amateur radio dream: to build a complete transceiver. So why not try to do both things at once?

This is just a quick note of my experiences in the first quarter of my trip of taking a homebrew rig into the field.

First off, I have absolutely no background in RF engineering, or electronics at all. But the literature is good and Elmers are priceless (thanks Kenn KA5KXW!). I started small, with kit projects, and then very basic transmitters.

I’ve always appreciated how much satisfaction my father gets by building things by hand, and finally I have a similar hobby. I called the radio I designed the Thunderbird Mk 1 based off the fact that I cut my CW and POTA teeth at Lake Thunderbird State Park in Oklahoma and will probably continue to work there the most. It’s a 6-band (40, 30, 20, 17, 15, 10) CW QRP transceiver with SSB receive.

The receiver is direct conversion and is an amalgamation of VU2ESE’s DC40, KK7B’s Classic 40, and W7EL’s Optimized QRP Transceiver. The VFO is an Arduino/si5351 combo based on the schematics and code written by VK3HN (who has helped me from afar, thanks Paul!). It’s crude, but I use a 6-position rotary switch to manually switch between the band-pass filters.

The transmitter is based on W7ZOI’s Updated Universal QRP Transmitter, married with VK3HN’s Arduino code that acts as the oscillator, keyer, and side tone generator. I get about 3 watts output for 40, 30, 20, a little less for 17 and 15, and about a watt on 10 meters. Like the receiver, I manually switch the low-pass filters.

Here’s a picture of the digital parts (ignore the second Arduino Nano, I thought I would need it but did not), the power board, and the filters. It’s on the bottom:

On top is the main board with the receiver, the transmitter, and T/R switching. Also, you’ll notice the green PCB. I *really* wanted to build NM0S’s Hi-Per-Mite from scratch but I couldn’t get the circuit to run right before my trip so I opted to install one that I built from a kit. It’s a fantastic CW audio filter that I can switch in and out (everyone should have at least one!).

I can switch in a little speaker and added a straight key jack. I printed the box on a 3D printer at the local library. It works great for the shack. In the sun, it’s starting to warp in the heat, so I’ll have to address this, but things still work!

Getting out the door on time with a finished radio was tough! I had finished right before I left on my trip (end of May 2024) and had no time to field test. The best I got was taking the rig to the table in the back yard and firing it up during the WPX contest.

I made amazing DX contacts on all the contest bands I had and called it good. But working superstations isn’t real life, and over the next week I’ve had to MacGyver the radio (rigging a car jump pack, an inverter, and a soldering station together at a picnic table to replace a bad transistor, for example). I think I’ve finally shaken out (literally) all of the loose solder joints and bad grounding. Continue reading Sam’s Thunderbird Mk 1 Takes Flight: A Homebrew Radio Field Report from the American Southwest

My first POTA Activation with the Index Labs QRP Plus Field Transceiver

Sometimes, we do things for the pure nostalgia of it all!

I mentioned in a previous post that I recently acquired a circa 1995 Index Labs QRP Plus transceiver. Being transparent here, this was an impulse purchase fueled by pure, unadulterated nostalgia.

The QRP Plus was the first QRP transceiver that I’d ever laid my eyes on only a month or so before obtaining my ham radio ticket in 1997. I’ll write about this in more detail in the future–and I speak to this in my video below–but let’s just say that this little cube of a radio made a big impression on me at the very beginning of my ham radio journey.

I thought it might be fun to take it to the field and compare this 1995 state-of-the-art radio with so many of my other field radios. The QRP Plus wasn’t a perfect radio, but it was a marvel at the time it was produced. I can’t think of a smaller, more battery-efficient general coverage 160-10M QRP transceiver at the time.

I was eager to introduce this little radio to the world of POTA so on the morning of Thursday March 21, 2024, I grabbed it and hit the field!

Zebulon B. Vance Birthplace (US-6856)

I called the Vance site that morning and learned that a large school group would be arriving around noon. Since I was planning to leave around that time anyway, it was perfect timing for me.

Since I hadn’t created a field kit specifically for the QRP Plus yet, I brought my watertight stackable Husky brand box that basically contains everything I need to set up a field radio station, save the radio.

I unpacked everything I needed: a key, key cable, battery, power cord, cable assembly, antenna, logbook and pencil.

Since the QRP Plus has no internal tuner, I paired it with my MM0OPX 40M EFHW antenna which would give me 40, 20, 15, and 10 meters. Note that Index Labs used to make an external manual ATU for this radio called the QRP Companion–I’ve never seen one in person, though.

Even though the Vance staff told me that the school group would not be using the picnic shelter, thus I could have free reign, I still deployed my antenna in a way that it would not become a trip hazard–keeping it close to the shelter and as conspicuous as I could (I do wish I would have brought along my flagging tape, but I left it at home).

Setting up the QRP Plus station was quick and easy. Time to hit the air!

Gear:

Note: All Amazon, CW Morse, ABR, Chelegance, eBay, and Radioddity links are affiliate links that support QRPer.com at no cost to you.

On The Air

I started calling CQ POTA on the 40 meter band, hoping it would be a little productive while we were still in the latter part of the morning. Continue reading My first POTA Activation with the Index Labs QRP Plus Field Transceiver

Replies from the Ergonomics vs. Performance poll

Yesterday, I posed the following question and asked for your input:

“Which aspect of a QRP radio holds more importance for you: its ergonomics (ease of use, comfort, display, size, etc.) or its performance (receiver test data, dynamic range, etc.)?” 

Thank you to everyone who participated in my recent quickie poll, which has now closed. There were so many interesting points in the feedback. Here are the results from the 252 votes cast within a 20-hour window:

In essence, a slight majority preferred ergonomics, with 57.1% of respondents indicating it as more important, while 42.9% favored performance.

As I mentioned in my previous post, I’m well aware that this question paints with broad brush strokes. There’s not a give-and-take between the two: an investment in the user interface typically doesn’t mean performance is going to suffer. Indeed, I would say most of our modern transceivers sport decent ergonomics and decent performance.

If anything, the relationship between price and performance plays a proper tug of war. Even that’s nuanced, though!

I also received a number of comments and messages from readers who pointed out that my survey was flawed because it didn’t define what I meant by ergonomics and performance carefully enough. I agree that this wasn’t a carefully considered and properly worded poll.

That said, the way I wanted to present this was more like an informal raise of hands–something I often ask for during radio club presentations.

Selection of Comments

The comments from readers were excellent and what I would expect to hear from people who’d raised their hands in a club meeting.

Here are snippets from a few of them, (for all of the comments, click here):

From Scott (KK4Z):

A tricky question. I actually prefer a balance between ergonomics and performance. If you have a good performing radio with mediocre ergonomics, it might not be used to its full potential. A radio with good ergonomics and mediocre performance might be used to its full potential which may be above a good radio with poor ergonomics.

From Mark (NA4O):

My assumption is that performance would have to be good enough for the radio to be in the running. Likewise, ergonomics would have to be good enough for it to be considered usable.

From Nick (KC0MYW):

As I consider the radios that I have and have used and which ones I like better and why, I think that the performance of the radio can almost be considered an ergonomic characteristic with regard to how comfortable and easy the radio is to operate. While a radio with poor ergonomics is not a lot of fun to operate, a lower noise floor and smoother QSK can add as much to the enjoyment level as an easy to access RIT control.

From William (KR8L):

Difficult to say… Since my field operations are very casual affairs I suppose performance is a secondary consideration, although I don’t think I’d enjoy doing a POTA activation with my HW-8.

Ergonomics can be very important — for example, although my FT-817 performs well enough, the number of button pushes and knob twists required to change the keyer speed (or just about any other setting) can be very annoying.

The well thought out controls of my KX2 make it my favorite for field operating, but then it’s a good performer too.

From Brian (K3ES):

Tough question. I will say ergonomics, but what I really mean is easy access to the features I need. I don’t necessarily need contest grade performance, but I do rely on features like a tuner, cw speed adjustment, vfo, etc.

From Emily Clark:

I pick performance for a few reasons: I do contest QRP at times (most recently ARRL RTTY Roundup). I like the filtering, the clarity of the screen, the true FSK for RTTY, and the ability to put an IF spectrum out into N1MM+. I only have wire antennas, and with the AH-705 I virtually do entire contests on my 80m OCFD.

From Michael (N7CCD):

If taken to the extreme on both options, I think I would have to choose performance. I would rather operate a radio that can handle QRM (overloaded front end, etc.) with confusing menus, than the opposite. If not taken to the extreme, then I may choose ergonomics…

From Mark (W8EWH):

Ergonomics for me because I, like many, have many field portable radios and as I cycle between them I need to be able to use them without the need to consult a user manual or waste time fumbling around a menu system looking for a particular feature or setting.

From Shawn (WS0SWV):

Performance! As a retired design engineer, I learned that good design addresses the performance needs of the user(s) in an intuitive manner. If it is cumbersome or overly complex then users will tend to migrate away from it. Some communities have specific ergonomic requirements and for QRP field radios I would argue the primary ones are size, weight, current consumption there are others depending on mode of operation like keyer memories and narrow filters for CW but those are the big ones.

From Wlod (US7IGN):

Different people have different preferences and ideas about ergonomics and performance. It’s important to find a balance, or better yet, have different radios for different tasks.

From Andrew:

Ergonomics is nice, but without performance … it has no use, imagine a coffee mug; it may be hyperergonomical, but then it has a hole at the bottom…

From Dick (K7ULM):

Interesting question. It is interesting how the ergonomics of the KH1 over shadows the performance of the KX2 for some use cases. In some uses the KH1 is definitely the the choice due to its ergonomics. For other radios of its size it will be chosen because of performance and ergonomics. The specific use case is the controling factor IMHO. Performance slightly over ergonomics, generally for me, kind of?

My thoughts?

If there was one comment that reflected my thoughts most closely, it would be this one from John (AE5X):

There’s a lot of overlap between these two characteristics. Too little of one undoes the effectiveness of the other.

I find that most radios do have “good enough” performance (barring an outright flaw or deviation from legal requirements), therefore I pay attention to ergonomics more than to lab numbers of dynamic range and other electronic specs…if I need lab equipment to discern whether or not my radio’s performance is acceptable, it’s acceptable. I don’t like buried menus for commonly-used features.

John’s right. We’re lucky these days in that most of our modern QRP field radios have acceptable performance for our field activities like POTA, SOTA, IOTA, QRP Contests, and some even have the chops for the RF density of, say, Field Day.

If performance is acceptable, I tend to give more weight to ergonomics because it’s important to me that the radio be fun to use.

What makes this show of hands a hot mess, when we look at it under the microscope, is the fact that both ergonomics and performance are nuanced. Herein lies the challenge I find in writing radio reviews: I believe it’s important to explore those nuances so that the review can inform a potential buyer (who might not share my same point of view) in a meaningful way. Sometimes it’s difficult to do that within a print publication’s word count.

Closing thoughts…

As we often say, there is no “perfect” radio that will please everyone, so I think it’s important before we make a purchase decision that we’re realistic with ourselves and understand what we actually value.

Here’s one real-life example–outside the world of QRP transceivers–I’ll share from a friend who, sadly, is now Silent Key. Since I can’t ask for his permission, I won’t mention his name.

Back in 2010, he came to me for advice on buying an SDR (Software Defined Radio)–a PC-connected black box receiver.

Even though not that long ago, keep in mind this was still during the infancy of modern, high-performance, SDRs and most of the options were going to set you back $1,000 or much more. In other words, a substantial investment.

This friend was an avid SWL DXer and was considering an SDR that, at the time, had a slight performance edge over popular SDR models from manufacturers like Microtelecom, RF Space, and WinRadio. I’m not going to call out this SDR by name either, but I’m sure some of you can guess which one I’m referencing.

This particular SDR had fabulous receiver characteristics on paper, but it was well known that the proprietary PC application that controlled it was a bit of a nightmare to use.

My friend purchased it. I tried to help him set this SDR up and learn how to use some of the basic functions and features, but we both found it a struggle. The GUI (graphic user interface), one could tell, was likely designed by the hardware engineer, not someone with experience creating usable software applications, also, unlikely someone who was a DXer or SWL.

He ended up selling this SDR after having owned it for less than a month. He agreed that the performance was brilliant, but hated using the app that controlled it. In the end, he purchased the venerable Microtelecom Perseus and absolutely loved it.

Rob’s advice

This topic of our personal preferences is such a deep one; I think I might put together a club presentation, exploring some of the nuances.

Speaking of presentations, if you’ve never seen Rob Sherwood’s excellent presentation exploring transceiver performance, I highly recommend you check this one out. Rob will be the first to tell you that modern transceivers tend to perform so well that the operator should give weight to ergonomics and usability.

Also, consider listening to this episode of the Ham Radio Workbench podcast when Rob was the guest.

Cast Your Vote: Ergonomics vs. Performance – What Matters Most in a QRP Field Radio?

I’m in the midst of writing several radio reviews, and this process always brings up a few inherent dichotomies.

For example—and the point of this quickie poll—some operators seek, first and foremost, a radio with brilliant performance specs. This is especially the case when we’re talking about contest-grade, pricey transceivers. Dynamic range, sensitivity, filtering, and blocking? Yeah, those are looked at very carefully by contesters and DXers.

On the other hand, for some, a radio’s performance is less important than how enjoyable the radio is to actually operate. Are the ergonomics well thought through so that common tasks are easy to perform? Is the display easy to read? Is the encoder weighted correctly? Is the radio compact but useable, etc.?

Even though field radios are typically not thought of as “contest-grade,” many of them have superb contest chops and receivers that can handle RF-dense environments with ease (I’m thinking about my KX3 with roofing filter here).

However, some radios might lack precision filtering and a contest-grade receiver architecture but are designed with field use in mind interface-wise. The Elecraft KX1 and Penntek TR-45L come to mind, although there are many more. Both have great receivers, actually, but the designers obviously placed an emphasis on user a user interface that is field-friendly. I find both such a pleasure to use.

What’s your opinion?

I recognize fully that I’m painting with broad brush strokes here—there are so many other variables in evaluating a radio. I’m sure most of us want a good balance of both performance and ergonomics.

But if pressed for an answer, where do you fall? What do you give higher priority: performance or ergonomics?

If you’d like to cast your vote, please consider participating in the poll below:

The Index Labs QRP Plus: Any fans out there?

I recently acquired an Index Labs QRP Plus transceiver (more on that in a future post!).

This little rig was produced in the mid to late nineties and, to my knowledge, was one of the first 160-10 meter, field-portable, general coverage QRP transceivers on the market. The only other one I can think of was the Ten-Tec Argonaut II, but please correct me if I’m wrong on this point.

QST ad from 1995 courtesy of WD8RIF.

I’m just curious if anyone here ever owned one and what they thought of it? Please comment!