QMX: Multiband Multimode QRP transceiver

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Күн бұрын

Launched in May 2023 at Dayton FDIM/hamvention, the QMX features:
80-60-40-30-20m operation (other band versions coming soon);
CW + Digi (SSB coming soon);
Compact, robust;
High performance embedded SDR;
Low 80mA receive current;
4-5W QRP output;
Built-in SWR meter;
Built-in 24-bit USB soundcard and CAT control;
TCXO as standard;
Low price kit ($95);
Sturdy optional enclosure (+$20);
Available assembled (+$50);
Powerful hardware platform for future development;
Free easy firmware updates for life
More: qrp-labs.com/qmx

Пікірлер: 113

@G6EJD 10 ай бұрын

Now that’s a real engineers bench🙂

@Lyndon_K 10 ай бұрын

Good day Hans, I just finished my QMX and I have made about 8 contacts so far. The bands were pretty much wiped out today due to a large solar flare but I still managed to work some very weak POTA stations. Lot's of fun! I will be taking the rig to the park soon to do a POTA activation. 73 DE VE3IGS

@krahwinkel9503 10 ай бұрын

I received the kit a few days ago. Knowing the quality of QRP Labs kits I do look forward to build it. I now own a QCX, a QDX and the QMX. Again a very nice piece of engineering - thank you Hans.

@Paul_VK3HN 10 ай бұрын

A remarkable design achievement from every angle, it has been inspiring to follow the lineage of the ideas, engineering and fabrication of this product from one ham's workshop.

@JonathanKayne 10 ай бұрын

The qmx is incredibly fun to use! Really looking forward to AGC and maybe a 40-10m version!

@hcy0 10 ай бұрын

Great device. Would be nice to have 17 and 15m instead of 80 and 60.

@haramanggapuja 9 ай бұрын

Agreed. By which time we can hope for the sidetone volume & AF volume adjustment function to work. Having one for 40, 30, 20, 17 & 15 would be super for POTA/SOTA/BOTA/IOTA ops. As it is, however, it’s a very nice QRP box. I’m enjoying mine & am, of course, looking forward to FW updates. 73 de W8IJN

@ai5dd 6 ай бұрын

There is an option for that now

@DaveW6OOD 10 ай бұрын

I like the long videos. They have lots of info and insight. I can’t wait for my QMX to arrive and for future mods and firmware. Excellent work.

@ksb2112 10 ай бұрын

Hans, you are a genius....

@stubryant9145 10 ай бұрын

Another winner! I guess it is about time to get my QDX built then think about building this one. I'm sure QSX will still have some advantages, but this QMX seems to edge closer yet to the QSX's capabilities. Can't wait to hear more about the expected SSB mode implementation.

@axelkohlgrueber2453 10 ай бұрын

I just finished building my QMX. Works excellent. A lot of high tech in a small space. You have to be very careful when assembling it, but if you follow the very good assembly instructions exactly, it's quite easy. Another real hit from QRP labs. That can't be topped anytime soon!

@HiltsyAdventure 10 ай бұрын

Im a little worried about the build, but I got new solder tips and also a third hand with a lit magnifying glass :) it will be a couple weeks before Im home again and can build it.

@axelkohlgrueber2453 10 ай бұрын

@@HiltsyAdventure Hello Hiltsy, don't worry, it will work. What I use: Soldering station = Ersa I-Con pico, 68W I usually solder at 450° Celsius. Head loupe: Carson LumiVisor 2x/3x/5x/6x, works well. After only a few solderings, I immediately check for contact, with the enameled copper wires after each individual soldering! To do this, I clamp two fine sewing needles to my test probes. Have fun building.

@virilis 10 ай бұрын

This is such a great progression! I'm looking forward to SSB on the QMX! Meanwhile i will build it and use for QRP CW in the field. Kudos, great work Hans! 73

@virilis 10 ай бұрын

I just had to laugh so much with "for the qrp fanboys"😂, love it, thanks Hans!

@dansloss2566 10 ай бұрын

Great kit, Hans. Very careful soldering required. Looking forward to the testing / trouble-shooting info to see what I got wrong in my build.

@Fantik22 10 ай бұрын

QRP-labs make killer of KX2 😁😁😁

@DrFredism 6 күн бұрын

I do value and appreciate all your work.

@MiscDotGeek 10 ай бұрын

Congrats, Hans. Can't wait to get mine built. Looking forward to the SSB/EER firmware.

@barrybogart5436 10 ай бұрын

I can't wait for mine already built with SSB, upper bands. Can't wait to ditch the Tru(SDX).

@rogerinwales 10 ай бұрын

Excellent Hans, can't wait for the mid band version. In the meantime i'm enjoying my QDX & QCX mini!

@TishaHayes 10 ай бұрын

order placed, thanks! Another one to accompany my other QRP Labs radios

@BackcountryGearShed 2 ай бұрын

This was the most complex kit I've built so far, but also had the most detailed and thorough instructions. I look forward to building another QRP Labs kit.

@N4GW 10 ай бұрын

Very nice. Can’t wait for SSB

@John_Smith__ 10 ай бұрын

Yes! Another Awesome QRP-Labs radio wonder!

@randalltom9750 9 ай бұрын

I've got five of your amazing transcievers... My new QMX is only a few weeks away from arriving. I'll keep em' all, Thanks Hans!

@ScatManAust 10 ай бұрын

I'd like to buy the high and low models when ssb is out. Looks awesome project

@hcy0 7 ай бұрын

Waiting for the mid-band version (40, 30, 20, 17, 15).

@ve3sif 10 ай бұрын

Can't wait to get mine, Hans. This will be perfect for my bike ops. love it. 73 and 72 Ron

@Frank_K4FMH 10 ай бұрын

For the Three Little Bears, the middle porridge was just right. Just use the length you think communicates what you want to say, Hans! Mine is on order...looking forward to it when it's done.

@Liberty4Ever 10 ай бұрын

That looks great! If you're taking requests, I'd love to have QDX+ which would be pretty much the features of the awesome QDX, but with the option to run 20 W out, and with good heat sinking on some TO-220 sized final amplifier transistors so it'll reliably operate in the field in desert conditions (50 C ambient). Bonus points it it could be ruggedized to be waterproof or at least splash resistant... IP-54 or better.

@theAF5D 10 ай бұрын

Nice video, Hans! Can't wait to get my hands on my assembled QMX and QCX Mini. As of today #6 in your waiting list 😅

@mabo4848 10 ай бұрын

wow !! if id had SSB its fantastic !!!! i ordered 2 month ago.... 73

@warplanner8852 10 ай бұрын

I shudder to anticipate the future!

@thuff3207 8 ай бұрын

Way too cool and that I did not know I needed. Thank you for all your hard work to make it.

@JxH 10 ай бұрын

POTA operations are often conducted (for example) at a picnic table less than 10m from the vehicle parking spot, so equipment size and weight is most often not a major concern. SOTA, where clambering up a tall hill or mountain, yes of course. Major concern.

@SansNeural 10 ай бұрын

I've done a couple of Field Days with my QDX at parks. It's kind of fun to lug my big battery and a solar panel out just past the picnic tables... then pull my radio out of one shirt pocket and my wire dipole out of the other.

@M7XCB 10 ай бұрын

Fantastic engineering great video.

@votisb 10 ай бұрын

My kit arrives next week. Very excited. I've built the (tr) uSDX which was fun. This looks to be a more complex build and am looking forward to the challenge :)

@resistor--1816 10 ай бұрын

I just love my little QDX, so I had to order one of these too!. Thank you so much, Hans, for helping me with my confused ordering.

@pongo1372 10 ай бұрын

Just received mine, what an epic design.

@technishn 10 ай бұрын

A nice video of the functions. Keep up the great work.

@noisetinker 10 ай бұрын

Got mine and love it!

@shrumby7231 4 ай бұрын

I've enjoyed every kit you've done, Hans. Keep up the wonderful work. Don't listen to the impatient people whining about SSB. It'll be done when it's done. If not, then not. Nothing promised, nothing lost.

@DonzLockz 6 ай бұрын

I was looking at this on your website the other day after seeing a video on it. Great value for money and well designed. I was unsure on all options and need to look more into it next year, already blew the budget a while ago.😅

@Steve-GM0HUU 10 ай бұрын

Thank you for video Hans. I don't mind longer videos. I have ordered a QMX. Looking forward to building it and hopefully getting it on the air. The only problem is that it might make some of my QCXs redundant 😂.

@JustMe-dv5ix 4 ай бұрын

Oh Normal Ops are CW Hams, Not SSB as some would like to believe. Good Job Hans

@valerijlukianiuk850 4 ай бұрын

Yes Sir gd dr om 73

@LA9RKA 10 ай бұрын

Nothing wrong with long videos. ;-)

@jeromekaidor7254 3 ай бұрын

QMX is on order! I thought of having Hans build it, but at 25 builds/week and 800-ish orders already in the queue, it would have taken way too long.

@SpeakingArrow 10 ай бұрын

Looking for the green light from XYL which I expect once I can talk a little with her. Love the kits, all of them! My first QMX will bring my total owned QCX-all models most bands to 12.

@Steve-GM0HUU 10 ай бұрын

😂 My long suffering XYL allowed me some radio pocket money recently. First thing I ordered was a QMX kit.

@andrerobitaille559 10 ай бұрын

My god, it’s full of stars.

@barrymayson2492 10 ай бұрын

If I build it " my God it's full of smoke "

@patring620 10 ай бұрын

Yes, David.

@matzakrzewski 10 ай бұрын

waiting for highband version with ssb or allband with ssb...but good job until now!

@gregoryhorwitz7373 9 ай бұрын

Just amazing

@bill-2018 10 ай бұрын

It looks wonderful. They all do. Small and great features, ideal for out and about. Good price too. I'll keep an eye on it. Puts my h/b ssb/cw G4CLF based one to shame in terms of size but it is years ahead. 73, G4GHB.

@EC5ABG 10 ай бұрын

Gran trabajo!!, 73.

@M0NTVHomebrewing 10 ай бұрын

Looks brilliant Hans. Many congratulations! 73 Nick M0NTV

@larspregge6420 10 ай бұрын

It would be great to choose other bands as "only" 80/60/40/30/20. May i'll work only on 40 and higher bands or WARC... And OLED Display would nice too. But, thats again a really great work.

@edwarddavis3748 10 ай бұрын

I will buy one when ssb is operational

@rst5nn 10 ай бұрын

This is what we are waiting for =) 😍 But anyway, I still like my QCX =)

@larspregge6420 9 ай бұрын

Who need 80m for /p? 40m and less/warc would be nice. And OLEd for less power. But, great work as usual.

@russ_vee_jr4199 3 ай бұрын

Hans, I would sit for hours listening and watching any one of your videos. Do what you think is best to pass your info onto us! BTW: I will order the QMX in a few weeks. Really looking forward to the addition of phone functionality. This is a long post, Folks. Must get back to practicing CW. I started with CW by counting DOTS/DASHES 45+ years ago, and it's cursed me ever since. Several years ago, I worked up to copying @ 20 WPM @ about 85%/90%, but jobs/family put HAM activities on the shelf. However, your kits have pretty much reversed that. BTW: I'm a retired Over-the- Hill, Has-Been Digital Electronics Iginier, very-very into my senior years, and as you know: 'You can take the Engineer out of the Lab, but you can't take the Lab out of the Engineer!' My specialties were Digital Designs of Embedded Real-Time Machine Controllers, High-Speed Mil-Spec Comms, State-Sequencers, and Four-Bit Slice designs, along with much Assembly Language Code to test my hardware and prove to the Software-Pukes that a degree from Dartmouth didn't make them hardware or software engineers. I provide this info to demonstrate my history of: 'Bin-There-Done-That' So, with that being said: I consider you to be an outstanding engineer! Your Hardware Designs are a demonstration of simplicity that provide the intended functionality. And, the functionality of your Sofware Design(s) is/are SUPERB! The combination of your Harware/Software designs demonstrates that you defined the product's functionality, outlined the code, detailing the tricky stuff, then flushed out the hardware, finalized it then intergrated it all together. As I matured as an engineer, that became my Design Path. Hans, your Work Output is outstanding, SIMPLY OUTSTANDING..........

@robertallbright 8 ай бұрын

Very impressive 73 Rob G3RCE

@elektrophysiklk 7 ай бұрын

great 👍

@harrymagooslum5770 10 ай бұрын

That looks like another winner, Hans! Good work. One question: the QCX-mini ended up getting a AGC to handle the wide dynamics and looking at the schematics for QMX it seems to have fixed gain. Is the dynamic range of the ADC sufficient to handle both very weak signals as well as strong [local] ones?

@QRPLabs 10 ай бұрын

In QCX-mini, AGC is a matter of operator comfort, not dynamic range. It keeps the volume level at the earphones reasonably constant. QMX is an embedded SDR (Software Defined Radio). In QMX I used a very high performance ADC having a rated Spurious Free Dynamic Range of 110dB. As a comparison the ADC used in the Elecraft KX2/KX3 rigs which are a similar SDR, has SFDR 103dB. It's very important because if you use a lesser ADC, and attempt to compensate for that by putting variable gain blocks or attenuation ahead of the ADC, you do NOT increase the dynamic range, you just move the dynamic range window. Yes you can receive weak signals as well as strong ones by doing that - but that isn't the point of high dynamic range; high dynamic range gives you the capability of receiving weak signals you want, in the presence of very strong ones a few kHz or 10's of kHz away. The only way to achieve this is a very high performance ADC. Not gain or variable gain/attenuation before the ADC. Then subsequently the gain is applied digitally, as well as AGC. At the audio output, volume control is also applied digitally - the output stage uses a 24-bit stereo DAC. There is plenty of range available to be able to apply gain control digitally and still have plenty of bits of resolution to not distort the sound even at low volumes. The very high performance ADC chip in QMX and the careful analog design ahead of it (same as QDX) gives these transceivers a performance which beats many expensive commercial transceivers by the big names.

@HiltsyAdventure 10 ай бұрын

Just bought one the other day coming all the way to Iowa :) I cant wait to build it! 73 KF0GZB

@user-vx5ru7gh7c 10 ай бұрын

Thank you, Hans! My QMX should arrive sometime in September/October -- in the meantime I am happily using my 3 QDXs (high band, low band, single band), QCX mini, and (my first QRP Labs radio) QCX+. Your kits are fantastic. I am very interested in the future SSB firmware addition to the QMX. (BTW, the "fanboy" key fob is brilliance.) Q: Has the QMX platform now incorporated the legendary QSX project, or is the QSX still to come at some future date? Cheers and 73 Garu

@QRPLabs 10 ай бұрын

QSX is still to come!

@markhealy9361 10 ай бұрын

Looks like another super product Hans. 73s de Mark EI6JF

@Steve-GM0HUU 10 ай бұрын

Yes, I think it does look like a winner - an excellent evolution of the QCX and QDX. Several interesting design ideas implemented. The highly efficient buck converter that auto shifts frequency to stop QRM is just one example.

@Tamlin73 10 ай бұрын

This one with ssb and 20-6meter will be a winner :) i want one, i think its to many to advanced radios out there, i want a nice easy one, i have several of the chinese clones, and they are realy cool, but maybe not the best quality, so your radios is the best but for me its not realy there yet, since i dont use digital modes, and i like the higher bands best, but i promisse to get one some day :) best regards and 73 from Norway.

@R2AUK 10 ай бұрын

👍 ❤

@o2bnov0307 9 ай бұрын

I love the key fob portion of the PCB! Is there a future 10-20m QMX possibility?

@JustMe-dv5ix 4 ай бұрын

Yes you can pick that option when you place your order.

@jeffdyer2393 10 ай бұрын

I wonder if you have plans for a 50 watt multiband cw ssb amplifier.

@edwarddavis3748 9 ай бұрын

Can’t wait till you have the qsx

@PetrVojacek-uw3ud 10 ай бұрын

i need ssb when will it be operational?

@merlinridesagain 10 ай бұрын

+1 Fanboi

@billryland6199 5 ай бұрын

You still have not finished the QSX SSB transceiver. I waited for it several years. All these CW rigs only interest a minority of hams. We need small SSB rigs for normal ops and digital modes. I built the QSX 10 watt PA before giving up on it and buying an FT-891.

@graeme9184 Ай бұрын

The majority of so-called hams with the baby, easy peasy licences are too lazy to learn morse code.

@bob-N4REE 3 ай бұрын

How well does power output on the high band version compare with the low band version. On other similar products, there's a disappointing fall off for the higher bands.

@jdschauss 10 ай бұрын

Hans, you know my money is on the way, my friend. Congratulations on moving forward with your long-awaited QMX transceiver! K5SFC

@michaeledmonds3027 6 ай бұрын

I ordered my QMX in October, 2023, with SSB in mind. What mini hand mic would you suggest that would pair nicely size wise, please? Thanks, Michael

@junyangxx 5 ай бұрын

N7KOM showed a DIY mini hand mic, made from a Baofeng-type mic+earphone with a PTT button.

@jeromekaidor7254 3 ай бұрын

@@junyangxx WRT Baofeng mics - I got one with a UBITX transceiver. Reports were always that the audio was "thin" and weak. Somebody else took theirs apart and discovered that the actual microphone is a little tiny electret element. AND the hole to get sound to that electret was very small, almost invisible, and set off to the side. He took his Baofeng apart and drilled a new larger hole through the case in the middle of the mic compartment. Big difference. Louder, more balanced, more punchy audio. I just did the same, haven't tried it out yet.

@MrCowboybud Ай бұрын

Will it have the AGC board installed ? I know it is an option with the QCX mini

@DrFredism 6 күн бұрын

I had been waiting for this but I want voice and winlink

@polarbear5464 2 ай бұрын

Can I use 9V with the 12V version?

@Lee-M0VKR 2 ай бұрын

Such a shame my QMX has gone missing in the post, ive been chasing it up for 2 months 😞

@apunctg 10 ай бұрын

I can see the built-in microphone it doesn't show in the pictures that are displayed on the website ... is that the last iteration or this one in the video ? thank you ... 73

@QRPLabs 10 ай бұрын

The prototype enclosure didn't have a hole for the microphone. And at the time I build the pre-production QMX shown in the photos, I didn't yet have the microphone as it was one of the last components to arrive. ALL of the sold QMXs all have the microphone, and the QMX enclosure with the hole for the microphone. Only my one is unique in not having it!

@apunctg 10 ай бұрын

@@QRPLabs great ... just ordered one ! Great job Hans ! 73, M0IVI