Tag Archives: QRP Radios

An in-depth review of the Xiegu G106 QRP HF transceiver

Note that the following review first appeared in the May 2023 issue of TheSpectrum Monitor magazine.

Update: Also, please note that the G106 is on sale at Radioddity at time of posting. With our affiliate link pricing is only $264 US (see note at end of review). Please read this review prior to making a purchase decision!


An in-depth review of the Xiegu G106 QRP HF transceiver

by Thomas (K4SWL)

Last year––in May of 2022, that is––Xiegu announced a new compact field radio that would be added to their line of transceivers: the Xiegu G106.

Xiegu has really made a name for themselves over the past few years with several transceiver offerings, many of which have become very popular. Among these:

  • The Xiegu G90 is a 20-watt transceiver with an excellent built-in ATU. The G90 has become a very popular field radio over the past few years.
  • The Xiegu X5101 is a five-watt shack-in-a-box HF transceiver covering 160-6 meters. The X5105 has become a go-to QRP portable due to its fine built-in ATU and built-in rechargeable battery pack.
  • The Xiegu X6100 is much like the X5105, in that it’s also a shack-in-a-box QRP transceiver, but it leverages SDR technology to provide a beautiful color spectrum display and a host of features not found on its predecessors. Many have adopted the X6100 because its operating system is Linux-based and many enthusiasts have created their own X6100 interface that promised direct digital mode operation.

Because we’re seeing more products like these from Xiegu, the up-and-coming Xiegu G106 stirred interest.

Moreover, Xiegu has become a low-cost leader among HF transceiver manufacturers. In each of the reviews I’ve published about Xiegu radios, my summary statement is that each unit offers a lot of performance for the price. Xiegu transceivers don’t have the most robust receiver front-ends, and the audio is unrefined, but their rigs get the job done and have some serious “fun factor.”

So when I first learned about the new Xiegu G106, I was curious where it would fit into their product line.

Introducing the Xiegu G106

As I was capping off my summer in Canada back in August of 2022, Xiegu retailer Radioddity started shipping the G106. Radioddity had me on the list to send a loaner G106 for review, but  upon my return I found myself so busy that I didn’t immediately request it.

I did watch, however, K8MRD’s initial and updated review of the G106 on YouTube. While it was less than stellar––understatement alert––more relevant to me was that Mike shipped his second evaluation unit to me on behalf of Radioddity.

I connected that G106 to a dummy load, checked the transmitted signal on my SDRplay RSPdx spectrum display, and it simply didn’t look very clean. In fact, it looked worse than it did when Mike checked it only a couple of weeks prior.

I shared my results with Radioddity and told them I didn’t feel comfortable putting the G106 on the air; they asked that the unit be returned and checked out.

Fast-forward to January 2023, when I was once again contacted by Radioddity to see if I would like to field test an updated G106? I answered that I was happy to do so, because I was curious whether the G106 experience had improved.

In the spirit of full disclosure, keep in mind that Radioddity is a Xiegu retailer/distributor––the company is not the manufacturer, nor is it owned by Xiegu. They sent this G106 to me on an extended loan for an honest evaluation.

So where does the G106 fit into the Xiegu product line?  It’s being marketed as a low-cost, entry level, multi-mode QRP HF transceiver that leverages 16-bit CODEC sampling to provide the user with a lot of radio for the price. It’s basic, and meant to be so, in that  it’s only a transceiver; there is no built-in ATU or battery. The G106 is marketed as a bare-bones portable HF transceiver.

I feel like it hits this mark.

The G106 doesn’t have a lot of features or controls one might expect in other Xiegu radios, but it has more features than any other modern HF radio I know of in its price class (see features list below). Indeed, I can’t think of any other 80-10 meter general coverage QRP transceiver that retails for $320 or less. The G106 has this market niche to itself for the moment.

Overview

When I first received the G106, I was a little surprised:  it was even more compact than I had imagined.

The sides of the G106 are rounded and the chassis extends beyond the encoder and front controls of the radio, thus the interior is quite well protected in the event the radio is dropped. This is one of the few QRP field radios on the market that doesn’t need an aftermarket cage. I’ve been transporting the G106 in an old hard shell headphone case a friend gave me. The case isn’t large, but it easily holds the G106 and a power cord with a bit of room to spare.

 

The G106 sports a small monochrome backlit display that’s very easy to read in the shack or in the field with full sunlight.

Besides the weighted encoder (which has soft detents), the volume control, and microphone port, there are also four multi-function buttons located under the small display on the front panel. On top of the radio, there is a power/backlight button, mode/pre-amp button, and two band buttons that also can be pressed and held to change the frequency cursor position. The internal speaker is also mounted on the bottom of the top cover, just behind the top panel buttons.

On the back of the G106, you’ll find a BNC antenna port, ground/earth lug, key port, COM port, 8 pin ACC port, and a DC input port.

The most conspicuous omission is a headphone or external speaker port. I would have expected this in a QRP field radio because operators often prefer using headphones in the field rather than a speaker. I know that some G106 owners have built their own RJ9 audio plug to port out the audio to headphones. There is a headphone port on the supplied speaker mic, but CW-only operators might prefer a more direct way to connect earphones in order to keep the bulk of their field kit to a minimum.

What is surprising is that the G106 has a very basic spectrum display that is actually quite useful!

Ergonomics

The ergonomics of the G106 are overall pretty good…but a bit quirky. To be honest, giving the user access to numerous functions and features on a radio this small is always going to affect ergonomics; there’s only so much control-surface real estate. Continue reading An in-depth review of the Xiegu G106 QRP HF transceiver

Survey #2 Results: If you could only have one QRP radio for all of your ham radio activities, which one would it be?

This past weekend, I posted the second of several surveys on QRPer.com asking:

“If you could only have one QRP radio for all of your ham radio activities, which one would it be?”

The responses started flowing in immediately and, once again, within the first day we had already accumulated over 400 votes.

I turned off the survey at 8:00 EDT on Tuesday, May 16, 2023, with a total of 618 responses. Due to my travel schedule this week, I didn’t leave the survey open for responses as long as I did for Survey #1.

Survey Results

Here’s a pie chart showing the top 14 results in the survey. To see detail, you will need to click on the image below (or click this link) to enlarge it in a new window:

The top choice was the Icom IC-705 which accounted for 28.8% of the 618 votes.

I’m not at all surprised the IC-705 was the most popular choice.

This survey focused on the one single QRP radio you’d pick to accommodate all of your ham radio activities, modes, etc. Frankly? The IC-705 does it all: HF/VHF/UHF multimode operation, DV voice (D-Star), built-in GPS, wireless connectivity for digital modes, built-in sound card, built-in Bluetooth and WiFi hotspot, built-in recording, broadcast band reception, high-performance receiver, color spectrum display and waterfall, and so much more. Heck, you can even charge its battery pack with a common Micro USB charger.  Read my review if you want a more comprehensive view of the IC-705.

The only real con anyone mentioned was a lack of an ATU which, frankly, is something that’s so easy to remedy with an external ATU or by using resonant antennas.

Your second choice was the Elecraft KX2 which accounted for 20.1% of the votes.

The KX2 is such a versatile portable HF transceiver that it was the most popular choice in our first QRP radio survey. No doubt, those who chose the KX2 love playing radio in the field as their primary activity because it’s such an adept and versatile radio to take outdoors.

Your third choice was the Elecraft KX3 with 18.7% of the votes.

I actually thought the KX3 would take second place since it’s one of the highest-performance HF radios on the market and covers 160-6 meters with a 2 meter option. It’s an HF Swiss Army Knife of a radio.

In fact, during the first day of voting, the KX3 held the number two spot with as much as a 2% lead over the KX2, but as more votes rolled in, that lead narrowed and the KX2 displaced the KX3 for runner-up.

Your fourth choice was the Yaesu FT-817/818 which accounted for 10.5% of the votes.

Again, I’m not surprised the FT-817/818 ranked high among survey respondents. As I mention in a recent article, the FT-817/818 is an amazingly versatile, durable, and capable QRP radio.

It’s also the most affordable among these top contenders!

Like the IC-705, the FT-817/818 has multimode capabilities from 160-6 meters, VHF, and UHF.  It also sports both SO-239 and BNC antenna ports which makes it very unique among QRP radios!

The lab599 Discovery TX-500 took fifth place with 3.9% of the votes among this set of distinguished radios.

Those who chose the TX-500 appreciate it for its 160-6 meter coverage, its unique form-factor and weight, overall performance, weather-proofing, and superb RX/TX current numbers for battery conservation. For those who like to play radio outdoors (sometimes in the rain) for hours at a time with a modest battery? Yeah, the TX-500 is made for that stuff!

Full Results…

If you would like to see the actual number of votes for each of the 48 radios in this survey, click the link below to load the rest of the page: Continue reading Survey #2 Results: If you could only have one QRP radio for all of your ham radio activities, which one would it be?

Survey 2: If you could only own one HF QRP radio, which one would it be?

I’m asked a variation of this question several times a month (no kidding!):

“Thomas, if you could only own one QRP radio, which one would you choose?”

If you’ve asked me this question, you’ll know I have a pretty canned response because I feel it’s a very subjective question–one that’s all about one’s own personal preferences–thus the radio I choose may not be the radio you would choose. Since others’ might use this choice to make a purchase decision, I’m uncomfortable providing a simple answer.

I need to better understand the operator before making a suggestion.

Survey #2

The last survey we conducted was so much fun and quite insightful! I’ve a number of surveys in store for the next few weeks. As with the previous, Survey #2 also focuses on HF QRP transceivers.

In this survey, I’d like to explore the topic above. In fact, another future survey will as well, but the case use will be more specific, so please read this survey question carefully:

Imagine, for a moment, that money is no object and that you could own any QRP transceiver in the world. Which one would you choose for all of your various radio activities?

In other words, you can own any QRP radio in the world, but you must use it for all of your radio activities (POTA, SOTA, QTH, Field Day, travel, etc.). Some of you may need a radio that can do all of these things. Some of you may only use it for Field Day, or travel.

In addition, some of you may only use one mode, while others use SSB, AM, CW, and various digital modes!

It’s all about you and how/where/when you might operate!

Please use the form below to make your selection. It’s okay to add a radio that isn’t listed in the “Other” selection, but make sure it’s a QRP (20 watts or less) transceiver, else the entry will be  removed because this particular survey is all about QRP radios.

The survey has no place for comments, but please let us know why you chose what you chose in the comments section of this post!

I will plan to share these results later this week. Thank you!

QRPer Notes: Phil’s Field Antenna Survey Results, Gripping the Palm Pico, and 70’s/80’s Vintage QRP Radios

Because I receive so many tips from readers here on QRPer, I wanted way to share them in a concise newsletter format.  To that end, welcome to QRPer Notes, a collection of links to interesting stories and tips making waves in the world of radio!


Field Antenna Survey

Many thanks to Phil (KA4KOE) who shares the results from an informal survey he conducted on the POTA Facebook group. Phil writes:

Tom

I’ve let the survey run for about 3 days on the POTA Facebook group. Sample size was 658 votes. I opted to do a “type” survey and not by manufacturer.

Results:

    1. End Fed Half-wave: 25%.
    2. Shortened vertical with loading coil: 20%.
    3. Full-size vertical antenna / Hamstick style vertical with helical coil:12% each.
    4. Full-size dipole/doublet, etc.: 10%.
    5. End Fed Random Wire: 9%.
    6. Screwdriver motorized coil antenna: 3%
    7. Something tossed in tree and just hoped it would work: 2%

Total: 93%.

Remaining obscure types cut-off below 2% accounted for 7%.

Again, like the poll I conducted previously on radio types, not surprised by the No. 1 spot.

What DID surprise me was #7: I put that selection in the poll types as a joke but 2% of hams throw a wire up in a tree or other support with no forethought and hope it works.


The Palm Pico: Getting a grip!

Many thanks to Terry (N7TB) who shares the following tip:

Hi Thomas,

I was looking at your post re: the Pico Paddle.

I have both the single and double Pico paddle and the KX3 mount. After watching you hand hold your paddles, I came up with a way to make small paddles easier to hold. I have attached a photo. It is a small piece of 3/8 ID pipe insulation to make holding the Pico paddle easier.

Have a great trip to Hamvention.

73,

Terry
N7TB


QRP Radios from the 70s and 80s

Many thanks to Ron (W6AZ) who shares the following video from Mikrowave1 on YouTube:

You asked for it! Here is the birth of QRP and a whack at revealing the top 10 QRP Homebrew Projects and Commercial Radios that started it all. What is all the fuss about low power?

Survey #1 Results: What QRP transceiver do you turn to the most in the field?

This past weekend, I posted the first of several surveys on QRPer.com asking:

What QRP radio do you tend to use the most in the field?

The responses started flowing in immediately and within the first day we had already accumulated over 400 votes.

I turned off the survey this morning at 5:00 EDT with a total of 696 responses.

Survey Results

Here’s a pie chart showing the top 26 results in the survey. To see detail, you will need to click on the image below (or click this link) to enlarge it in a new window:

The top choice was the Elecraft KX2 which received 131 votes. I’ll admit, this was my top choice, too.

The KX2 is the most compact, full-featured radio currently on the market. I know of no other radio that weighs less and is smaller in size that also sports options for an internal battery and internal ATU. It’s also one of only about five radio models on the market that has a built-in microphone.

The KX2 is one of the pricier QRP transceivers on the market, so in that sense, it did surprise me that it was number 1.

The Yaesu FT-817 and FT-818 series transceivers took second place with 105 votes.

Since this radio enjoyed one of the longest production runs in the history of amateur radio–and the price floated around $650 US new–we shouldn’t be surprised. It has so many good things going for it; click here if you want a deep dive into why I think the 817/818 is a fantastic field radio.

The Icom IC-705 took third place with 101 votes.

The IC-705 is an incredibly versatile radio as well and it packs some serious performance! It’s also one of the priciest QRP radio on the market at around $1,400 US. Click here to read my full review of the IC-705.

These are only the top three radios–check out the full results below to see how the top ten ranked among a total of 48 entrants.

Full Results…

If you would like to see the actual number of votes for each of the 48 radios in this survey, click the link below to load the rest of the page:
Continue reading Survey #1 Results: What QRP transceiver do you turn to the most in the field?

Survey 1: What QRP HF transceiver do you turn to the most in the field?

Last week, Phil shared results from a survey he conducted on Facebook regarding the most popular radios used for POTA. The survey was informal and, of course, only open to those in the POTA Facebook community.

The survey confirmed my suspicions that both the Yaesu FT-891 and Xiegu G90 were among the top radios used by POTA activators. Heck…I hardly know a POTA op that doesn’t have one of these two rigs–!

The survey also made me realize that I live in the world of QRP and often forget that the vast majority of ham radio operators do not, necessarily.

QRP Radio Survey Series

I thought it might be fun to publish a series of surveys over the course of the next few weeks that specifically focus on QRP transceivers.  Each survey will contain only one question.

These will all be informal surveys, but I’d like to have a fairly specific question in mind with each and would ask that you think about that question and answer it as honestly as you can. Many of these are subjective, so this isn’t always an easy task.

This first question, though? It’s easier to base on fact…

What QRP radio do you use the most in the field?

At the end of the day, our “favorite” radio might not be the one we actually use the most in the field.

In this first survey, please select the QRP radio you use most often in the field

Notes:

  • If you see a glaring omission in this list–a popular, mass-produced QRP radio I’ve overlooked–please comment and I’ll add it to the list.  Otherwise, simply select the “Other” choice and provide the manufacturer and model.
  • This list is pretty comprehensive, but I didn’t include some of the more obscure models, nor did I include vintage or Japanese Novice models simply because I see so few people using them as daily drivers in the field.
  • For this survey, I included radios with a maximum output power of roughly 20 watts.
  • The survey form has no place for comments, so if you’d like to tell us about your selection (even if it’s your only QRP radio), feel free to leave a comment on this post!

Thank you!

Survey 1:

The New Penntek TR-45L: A Video Tour/Overview, then a full POTA activation!

Yesterday, John (WA3RNC) opened orders for his long-awaited Penntek TR-45L 5 band, CW-only, QRP transceiver.

As I mentioned yesterday, I’ve had the pleasure of helping John beta test this radio for the past month. In that time, I’ve gotten to know the radio from the inside out and have even taken it on a few POTA activations. In fact, with John’s permission, I just posted my first TR-45L activation video for Patreon supporters yesterday. The radio was using an early firmware version in that video.

TR-45L Video Tour and Overview

Yesterday, after an early morning appointment, my schedule opened up; a rarity in my world.

I then got the idea to take the TR-45L out to a park, do a full video overview of its features, then put it on the air in a POTA activation.

Hazel loved this idea too.

So I packed the TR-45L, a log book, my throw line, and two 28′ lengths of wire. Hazel jumped in the car before I could invite her.

I’ve used a wide variety of antennas on the TR-45L over the past weeks, but I hadn’t yet performed a park activation only using two lengths of wire and relying on the TR-45L’s optional Z-Match manual antenna tuner. This would make for a great real-life test!

Quick note about video timeline

Side note for those of you who follow my field reports and activation videos

I pushed this video to the front of the line since the TR-45L just hit the market. I wanted to give potential buyers an opportunity to see and hear this radio in real world conditions thinking it might help them with their purchase decision.

I’m currently about 7 weeks behind publishing my activation videos. Much of this has to do with my travel schedule, free time to write up the reports, and availability of bandwidth to do the video uploads (I’ve mentioned that the Internet service at the QTH is almost dial-up speed).

I was able to publish this video within one day using a new (limited bandwidth) 4G mobile hotspot.  Patreon supporters have made it possible for me to subscribe to this hotspot service and I am most grateful. Thank you!

So that I can publish this report quickly (this AM), I’m not going to produce a long-format article like I typically do. Instead, this is one of those rare times when the video will have much more information about the radio and the activation than my report.  I’ve linked to and embedded the video below.

Now back to the activation…

Continue reading The New Penntek TR-45L: A Video Tour/Overview, then a full POTA activation!

Choosing a Field Radio: How to find the perfect transceiver for your outdoor radio activities!

The following article was originally published in the June 2022 issue of The Spectrum Monitor Magazine:


Choosing a Field Radio

by Thomas (K4SWL)

At least ninety percent of all of my radio operations happen in the field. Whether I’m in a park, on a summit activation, or I’m out camping, I’ve always thoroughly enjoyed “playing radio” outdoors. In fact, it was the joy of field radio––and the accompanying challenge of low-power operations––which launched my labor of love in the world of ham radio.

I’ve been running QRPer.com now for fourteen years, and during that time, the questions I’m asked most deal with selecting a field radio. Turns out, it’s an incredibly difficult question to answer, and we’ll touch on why that is before we dive into the reasons one radio might hold appeal over another for you.

Instead of offering up a list of field radios on the market, and reviewing each one—and, to be fair, there are so many these days—I’ll share with you a series of questions you might ask yourself before making a radio purchase, and follow up with a few bits of advice based on my own experience.These deceptively simple questions will help hone your decision-making. Finally, I’ll note a few of my favorite general coverage field radios and share what I love about each.

But, first…

Spoiler alert: It’s all about the operator, less about the specs

When searching for a new radio, we hams tend to take deep dives into feature and specification comparisons between various models of radios. We’ll reference Rob Sherwood’s superb receiver test data table, we’ll pour over user reviews, and we’ll download full radio manuals before we choose.

While this is valuable information—especially since radios can be quite a costly “investment”—I would argue that this process shouldn’t be your first step.

I’ve found that enjoyment of any particular radio—whether field radio or not—has everything to do with the operator and less to do with the radio’s actual performance.

A realistic assessment of yourself

The first step in choosing a field radio is to ask yourself a few questions, and answer them as honestly as you can. Here are some basic questions to get you started in your search of a field radio:

Question 1:  Where do I plan to operate?

If you plan to operate mostly at the QTH or indoors with only the occasional foray outdoors, you may want a field-capable radio that best suits you indoors—one with robust audio, a larger encoder, a larger display, and more front panel real estate.

On the other hand, if you plan to take your radio on backpacking adventures, then portability, battery efficiency and durability are king

Of course, most of us may be somewhere in between, having park activations or camping trips in mind, but overall size may be less important as we may be driving or taking only a short walk to the activation site. When your shack is a picnic table not too far from a parking lot or even an RV, you have a lot more options than when you have to hike up a mountain with your radio gear in tow.

Question 2:  What modes will I operate the most?

Are you a single mode operator? If your intention is to only use digital modes, then you’ll want a radio designed with easy digital mode operation in mind.

If you plan to focus on single sideband, power output may be more important and features like voice-memory keying.

If you plan to primarily operate CW, then the radio world is your oyster because it even opens the door to numerous inexpensive CW-only field radios.

If you plan to primarily operate CW,  I would strongly suggest going low power or QRP. I’ve often heard that 5 watts CW is roughly equivalent to 80 watts single sideband. I tend to agree with this. CW field operators hardly need more than 5 watts, in my experience.

And if, like most of us, you plan to operate a variety of modes, then you’ll want a radio that is multi-mode. Continue reading Choosing a Field Radio: How to find the perfect transceiver for your outdoor radio activities!

Which to choose? The Venus SW-3B or the Penntek TR-35?

Many thanks to Pat (N0HR) who shared following question in a comment:

Thomas

I simply love your videos – both your impressions of the gear and the activations themselves. Great stuff.

I’m curious – now that you’ve played with both the SW-3B and the Penntek TR-35, which is the favorite? Seems like they’re both roughly in the same price range.

Thanks for your fantastic channel and website

73,
Pat N0HR

Thank you for the kind words, Pat, and great question! Several people have asked me variations of this very question recently.

I like both radios, so I’ll frame this in a way that might help others make a purchase decision.

Spoiler alert: You really can’t go wrong with either radio and I feel it’s more a question of operator preferences. Continue reading Which to choose? The Venus SW-3B or the Penntek TR-35?

The new Mountain Topper MTR-4B V2 by LnR Precision

The venerable Mountain Topper MTR-3B

I’ve just noticed that LnR Precision has announced their new Mountain Topper MTR-4B V2.

They’ve released a few details with the promise of photos soon. Looks like the MTR-4B will of course sport four bands (80, 40, 30, and 20 meters) but adds two valuable tools its predecessors lacked: an SWR and RF power meter.

A full 5 watts output power is attained with a 12V supply, but the voltage operating range is 5.5 to 13volts.  The MTR-3B’s (photo above) has an upper operating range of 12V.

I look forward to checking out the MTR-4B and we’ll post photos as soon as they are available.

Here are the details from the LnR Precision Website:


MTR-4B V2

Photos COMING SOON

“The Mountain Topper”

The LnR Precision MTR transceivers are designed to be efficient portable CW rigs. Whether climbing a mountain and operating SOTA or just out for an afternoon in the park, the MTR’s small size, light weight and meager battery requirements makes it a great choice for these activities.

Features:

  • Four bands – 80M, 40M, 30M and 20M
  • Very low receiver noise floor
  • Low current for maximum battery life
  • Wide operating voltage range – 5.5V to 13V
  • Full 5W “QRP” gallon with 12.0 Volt supply
  • 2 line, back lighted LCD display
  • SWR – RF Power display
  • Built in Real Time Clock
  • Internal Iambic B mode keyer, 5 to 31 WPM in 1 WMP increments.
  • Three Morse message memories with beacon mode.
  • Specifications: coming soon