John reviews both the build and performance. He even put the TR-35 on his workbench and measured a number of parameters.
In short, the little TR-35 does exactly what it sets out to do and packs a surprising amount of performance.
John and I actually had a TR-35 to TR-35 exchange a few days ago (if not mistaken, the photo above was taken after that exchange). I was lucky enough to catch him as he activated a POTA site in Texas. From this end, his TR-35 sounded fantastic.
I’m putting together a review of the TR-35 which will likely appear in the May or June issue of The Spectrum Monitor magazine. I’ll eventually send this little TR-35 back to WA3RNC (it was very kindly sent to me on loan) but I do plan to purchase his TR-45 Lite kit when it hits the market later this year. Why? Because I don’t have enough QRP radios, that’s why.
If you’ve been listening to the Ham Radio Workbench Podcast, you’ve no doubt heard Mark Smith (N6MTS) talk about his “secret squirrel” project. At BayCon 2022 this past weekend, Mark revealed that the “secret squirrel” is a new product he’s designed called SOAR (Satellite Optimized Amateur Radio).
Mark announced that SOAR is basically a radio that’s “optimized for operating FM satellites.”
That’s a very modest description for a radio that can not only handle full duplex FM satellite communications, but also leverage the power of a GPS and CPU to help predict passes, aim an antenna, and adjust for doppler shift on the fly. And, oh yeah, it even records.
SOAR actually does much more than this.
If full duplex satellite work is the sort of thing that interests you, I highly recommend watching Mark’s BayCon presentation:
The Halibut Electronics website has only recently been launched, so there’s not a lot of info there at time of posting. For the latest news, I suggest you follow Mark on Twitter at: https://twitter.com/SmittyHalibut
A few week ago, my buddy Ara (N6ARA) sent me a prototype of his new ultra-portable CW key, the TinyPaddle Jack (TPJ).
You might recall, Ara introduced the original TinyPaddle late last year. His motivation for the original TinyPaddle was to have a super minimalist paddle that could be stored away as a spare in your kit for those times when you either forget or have an issue with your primary paddle in the field.
Turns out, there was a lot of pent-up demand for a product like the TinyPaddle. At $15 for the kit or $20 fully assembled, the TinyPaddle is a serious bargain. Ara and his father have been quite busy producing these.
Enter the TinyPaddle Jack (TPJ)
Whereas the TinyPaddle is designed around being the most simple/minimalist backup paddle solution–basically a wee paddle with a male 3.5mm connector that plugs directly into a rig’s paddle jack–the TPJ takes it one step further.
The TPJ is essentially the TinyPaddle with a female 3.5mm plug encased in a 3D-printed holder and protective cover.
The design is clever. The case that protects it while stored away in one’s field pack, pulls apart and is re-joined to make a very usable paddle holder.
There are actually quite a few purchase options, so Ara created this short video that describes the different components/options and how to use them:
I’ve been using the TPJ with my MTR-3B and new SW-3B. As I mentioned in my field report with the TinyPaddle, the action of this paddle is actually very precise–it almost feels like a capacitive touch paddle.
I find that the holder definitely adds to the ergonomics of the paddle (although it can actually be used without a holder, too).
Ara also created a small adjustment tool that will allow you to tweak the paddle spacing if needed. Keep in mind, this is a very simple paddle design (there are no springs or magnets) and isn’t really meant to be a primarily paddle. I do feel, however, that it will hold up quite well over time. The spacing of the contacts is so fine, I believe the stress on the paddle levers is minimal .
I plan to keep a pair with my new MTR-3B field kit (above) and use it as the primary paddle for that radio. I will plan to buy a second one for the SW-3B a well.
I personally think Ara could charge $40+ for these and they’d still be a bargain. I know him well enough to know that his motivation is in the fun of designing these products and making them accessible to other field radio operators. Case in point: I’ve been pricing quality 3.5mm patch cables recently and I find his $5 cable to be an excellent price; even more competitive than cables I’ve seen on Amazon and eBay.
In addition, Ara even freely distributes the 3D printer files so you have the option to print your own paddle holder!
It’s obvious to me that these products are his contribution to the community that pays for itself enough so that he can continue to innovate. His designs are so clever, I can’t wait to see what he comes up with next!
Many thanks to Bill (W4FSV) of Breadboard Radio who shares the following announcement:
40 METER “Woodpecker” QRPp Transceiver Kit From Breadboard Radio
Breadboard Radio has just released the 40 Woodpecker, a 40 meter low power CW transceiver for the 40 meter band. The Woodpecker features a crystal controlled transmitter with a 500 milliwatt output. The transmitter provides sidetone, receiver muting and QSK with delay. The Woodpecker’s direct conversion receiver has an adjustable bandpass filter, attenuator and an audio amplifier suitable for headphone level output plus a selectable low / high filter which helps with band noise and static crashes. The kit is supplied with crystals for 7030 and 7056 kilohertz. Other frequency crystals may be user supplied.
The designer, W4FSV has made multiple contacts using a 40 meter dipole antenna including many from 500 to 1000 miles. The kit is complete with all parts including a cabinet and attractive front panel plastic decal. A two channel 30 meter version may be available soon. A 60 meter version is also available.
Many thanks to Jim (N9EET) who notes that WA3RNC will soon be shipping his latest QRP transceiver kit: the TR-35.
According to the WA3RNC website, factory wired/assembled kits are available now for $379 US. The regular kits (with pre-wound toroids!) will be available for purchase January 24, 2022 for $279 US. If you’d like the pre-assembled version, simply click the checkbox that adds $100 for assembly in the WA3RNC store.
Here are a few TR-35 specs from the WA3RNC website:
Size 5 ½ X 3 ¼ X 1 ½ less protrusions, weight 10.6 Oz
5 watts output on all bands at 12vdc input
Full coverage of 40, 30, 20, and 17 meters with extended RCVR tuning above and below
RCVR modes for CW narrow and CW wideband, and for SSB reception
Optimized for operation from 3 series-connected 18650 Lithium cells
RIT tunes + and – 5KHz
Blue OLED display reads frequency to 10 Hz and RIT offset
Built in Iambic keyer is adjustable 5 to 45 WPM with front panel control
Separate jacks for straight key and paddles; Always ready for SKCC contacts
Operates on 9.5 to 14 volts, < 100 ma receive, about 1 Amp Xmitt at 10 volts
Selectable tuning resolution steps of 10, 100, and 1000Hz
Low battery indicator with internal adjustment 9.5 to 11.5 volts
Front panel adjustable RF gain control
Front panel TX power control; Adjustable from 0 to full output
Rugged TO-220 FET RF amp has delivered 5 Watts key down for 5 minutes
Signal quality blue LED, RIT warning orange LED, Low battery red LED
Excellent receiver sensitivity with MDS of -125dBm
Very effective receive AGC prevents ear damage with strong signals
Transmitter harmonics and spurs -52dB, meets FCC specs
CW sidetone is the actual transmitter signal as heard by receiver
Match the received signal tone to the sidetone for perfect zero beating
Sharp IF filter; Better than 350 Hz at the -6dB point, plus 700 Hz audio filter
Over 250 machine placed SMT parts, and about 55 user installed parts
All critical circuits are factory pre-aligned and calibrated
No endless “back menus”; There is a control or switch for every function
I’ve had the Xiegu X6100 on loan from Radioddity since December 23rd, 2021. In that time, I’ve used it heavily in the shack and I’ve taken it on three field activations using a variety of antennas.
Overall, I think it’s a great little field radio.
I’ll be producing an in-depth review of the X6100 for The Spectrum Monitor magazine, but in the meantime I’m trying to bring up any points in advance that might help others make a purchase decision.
On that note?
Receiver overloading
Let’s face it: receiver strong signal handling and overload performance are important factors when you choose a radio.
No one buys a new radio and says, “I really hope it overloads easily!”
As the title of this post implies, the biggest negative with the Xiegu X6100–in my humble opinion–is that it is prone to overload when in the presence of a strong signal. It’s a shame the front end isn’t more robust.
I’ve noticed this from my QTH, especially when tuning the X6100 outside of the ham radio bands. Indeed, I recently made a post about this on the SWLing Post. In truth, though, all bets are off when we move into the broadcast portions of the HF spectrum. Transceiver manufacturers usually don’t guarantee performance outside the ham bands. It makes sense as the focus is placed on ham band filtering.
But I have noticed overloading on the ham radio bands as well.
Earlier today, I did a park activation in Pisgah National Forest with the X6100. Before my activation started, I could hear a local AM broadcaster punching through the X6100’s front end all over the 40M band. I think it was a station on 1010 kHz which is only about 4-5 miles away from the site as the crow flies.
Yes, Scott will freely admit that his sticker is tongue-in-cheek!
Many thanks to Scott (KN3A) who recently commented with his thoughts and impressions of the Xiegu X6100. Scott writes:
When you published your X6100 [field] report, I could not wait to see the video! You tipped me off when we had our QSO that you were using it! As you said in your YouTube comment, a X6100 to X6100 was accomplished at your activation!
I am an avid POTA/SOTA QRP operator and mostly use my Icom IC-705 on activations. It is a superb radio and no intention of ever selling it. The reason I was attracted to my X6100 was the fact it’s an SDR, has a very nice display screen and has a built in ATU. I use many different antennas on activations, and some require a ATU, like my Sotabeams Bandhopper 3. I like using it when I go backpacking and activating due to how easy it is to deploy and lightweight.
To those who attempt to compare the X6100 to the IC 705 is like comparing a Ford F-150 to a Toyota Tacoma. I had an X5105 for a few months and went on a few activations with it. I would mostly compare the X6100 to the X5105 and call it a big upgrade to the X5105.
I got familiar with the X6100 in my hamshack the past 3 weeks, and although I know of it’s shortcomings, which I did share with Thomas prior to it’s arrival at his QTH, I am very pleased with the radio even with the features that are not enabled yet.
On Christmas eve, I went hiking and afterwards did a quick POTA activation inside my car using my IC 7100 and 50 watts. The temperature was getting warmer and warmer out, so I made a hasty decision to go home and get the x6100 and take it to another local park and sit outside on a picnic table. I decided to use my spark plug antenna and use my 17 ft. Shakespeare fishing pole. I had almost 1:1 SWR on 40 and 20 meters and had to use the ATU as I was having about a 3:1 on 30. The ATU kicked in and had a perfect match in seconds, which is also the same response as the G90 and x5105. Continue reading Xiegu X6100: Scott’s thoughts and impressions→
Many thanks to Josh for sending me this X6100 so promptly and performing the first firmware update!
I took delivery of the X6100 last week after returning from vacation in the Outer Banks. It was bittersweet as I was soeager to check out this new radio but simply had too many projects on the table to complete before Christmas day.
That and in the morning light after our return, my daughter pointed out that one side of my horizontal delta loop antenna had fallen to the ground. Fortunately, I was able to fix the antenna in short order. It’s certainly time to push the schedule up for completely replacing this 10 year old wire antenna!
X6100: Known issues
I had gotten a few messages from X6100 early adopters like Scott (KN3A) and Rich (KQ9L) noting that the current firmware version (the December 7, 2021 release) had taken care of a few initial bugs, but there were still a few outstanding points that specifically affect CW operators. Most notably:
Noise reduction (or DNR) in CW mode severely distorts audio
CW message memories can be stored and saved but cannot yet be played back on the air (SSB message memories are fully functional, however)
Fine tuning is limited to 10 Hz steps at the moment
Someone had also noted possible CW keyer timing issues.
At the same time, I had read mostly positive comments about SSB operation from QRPer readers and subscribers.
Frankly, knowing Xiegu’s history of pushing the production and distribution timeline ahead of a radio being fully-functional and properly tested, I expected a few bugs and issues that would need to be sorted out in firmware updates.
To be very clear: I’m not a fan of the “early adopters are the Beta testers” philosophy. I wish Xiegu would thoroughly Beta test their products so that they were more polished and fully-functional right out the door much like we expect from the likes of Elecraft, Icom, Yaesu, and Kenwood. There are almost always minor post-production bugs to sort out even with these legacy manufacturers, but issues should be of the variety that somehow slips past a team of Beta testers who actually use the radio.
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If you haven’t already, hop over to John’s (AE5X) blog and read his review of the Penntek TR-35 transceiver kit.
