QDX: new digital transceiver kit by QRP Labs

4 band 5W transceiver (5W at 9V supply)
80/40/30/20m solid state band and tx/Rx switching.
Built-in 24-bit 48ksps USB sound card.
Built-in USB virtual COM serial for CAT control.
High performance embedded SDR SSB receiver.
Single signal Class D push pull transmitter.
Built-in signal generator and test tools.
Synthesized VFO with TCXO reference.
Optional enclosure 89 x 63 x 25mm.

$60 QDX, $20 optional enclosure.
Ordering opens 11-Oct-2021 at 1800 UT.

NOTE: Terminal utilities shown in this video allow the user to experiment with changing configuration parameters, investigate modes, debug CAT issues, many interesting things... but the terminal utilities are NOT needed for ordinary operation of the radio and for the vast majority of operators, it will never be necessary to use the terminal.

[KBHSH]

I was able to get my order in for 3 V3 kits on May 1...and haven't regretted my purchase. The QDX V3 is an absolutely astonishing transceiver. For $66, it is a phenomenal performer, and, I reckon that it's this radio that will solidify Hans' inclusion in the QRP Hall of Fame

[d.jensen]

The QDX produces the same overwhelming feeling that my first contact with a Nano VNA did - a sense of absolute magic! If only every microcontroller could be so fully and cleverly utilized!

[hbshdham]

not only a neat product but also an excellent explanation on how it works! well done Hans

[johnwest]

Thank you so much Hans. I've been involved in electronics R&D for 40 years, working as a tech for companies from HP to SONY, so I'm a fairly good judge of good engineering. Yours is very good engineering.

I bought 2 of your Rev 3 kits and am very, very pleased with them. I think every ham would be wise to own at least 1 QDX if for no other reason than emergency use. They are well designed to the point of amazing little rigs.

The only thing I can fault it for, and it's not really a fault as such, merely an inconvenience, is that the bd is only designed for mounting in that $20 box. I didn't purchase the 2 boxes to go with my kits, as I have plenty of surplus metal boxes to use, with room in them for batteries, additions, modifications, and various different styles of connectors. And $40 for boxes is still $40. But unfortunately, upon looking at the boards after they arrived I found no way to securely mount them other than sliding them into the precise size of slide box that you sell. I find hot-glue, Velcro and such kludges to be repugnant. But I see there are no mounting holes for use with stand-offs, and nowhere on the board to add them. And T2 looks very close to shorting on most other metal slide holders. So I've been reduced to doing a bit of my own engineering to mount the bds. That is no problem for me, merely an inconvenience. A 3D printed holder should do the trick. But it would by useful for other builders to have the PCB mounting situation made clear to them in advance of their purchase. Again thank you for this design, and I suspect I'll be buying more of your rigs in the near future. They are far better engineered than one can expect for the price.

[bradhansen]

I missed the boat on getting this kit, Hans! I am eagerly awaiting the opportunity to order one. Thanks for providing another wonderful product for the Ham community 👍🏻 W9BLH

[patring]

Nice job. I see you have straightened up your office a bit since the QCX Mini video. hihi. The QDX looks like a great kit, Hans. Thanks.

[harihurtig]

What an amazing kit. The manual is just great, kudos for that. I had a lot of fun building this kit. Very recommended!!

[larrychristensen]

Very impressive Sir. Thank you for another great product.

[downhillgeezer]

Thank you Hans !! This is another must-have product for QRP-Labs addicts like myself ;-) ( and the video is a master class in design excellence ! )

[LibertyEver]

This looks great, particularly for portable operation. I love the minimal hardware made possible by the direct frequency synthesis approach. It simplifies construction, reduces cost and improves the performance. The clever software is a nice touch, too. I'm looking forward to using this with JS8Call. The 100mA receive current is excellent for battery powered operation. A small solar panel could power a station with the QDX as the transceiver. I only wish it provided 20W RF output for more reliable communications. I'm less interested in random QRP contacts. I want more reliable communications that aren't as reliant on optimal propagation.

[nkr]

Pure genius ! Can't wait to see what is next . Kudos to QRP LABS

[ahmedalshalchi]

Very interesting and impressive signal processing ... I am really impressed by your work, excellent job, hats off !! ...

[yrath]

I know what I will be doing at exactly 1800Z on Monday! Thanks Hans!

[winstonsmith]

Brilliant! I think this will be extremely popular once the word gets out.

[paulinmt]

Cool stuff. Looks like more research leading to the QSX. I'm a QRP CW nut so not really interested in the QDX, but FB Hans!

[languagetruthandlogic]

My wife hates you! LOL Every time you bring out a new kit - I have to have one because they are excellent. Thank you!

[ralphwilmot]

Brilliant design and acheivement Hans. Having previously built 4 QRPLabs kits. I was very interested in this kit and lucky enough to buy one of the first kits available. Looking through the manual, the design features are amazing for a compact 4 band transceiver, which will be of great interest to digital operators in the same way as the QCX is to CW operators. Looking forward to building and operating. G4PEY

[BrandonGrahamForge]

Thank you! I have been waiting for someone to come out with this and was hoping it would be you. This is going to be amazing!

[BikingChap]

Fascinating design and perfect for those newcomers who are cash strapped but want to get on to HF. If a built version is offered it’ll prove even more popular but am sure it’ll fly off the shelves as a kit.

[lavi]

Hans you have Gold-Fingers ! All very nice Equipment from QRP-Labs ! Thank you. Joe, DL1DUR