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After building my kit I very quickly put it on Ft8 to check it out. It received apparently ok. With pskrporter I saw my transmissions registered all over north America. I then plugged in a head set

that didnt work. dead as a doornail at 9V

Great job, Mike ! Hope to hear you on mine. Mine just passed the ‘smoke test’ ! Yesss ! 90 ma at 12V. 73, Jamie WB4YDL

Greetings all, My QMX has been complete for a while, but I've been traveling and only had a chance to put it on the air for the first time today. First contact was on FT8 with HI3K at a

I set the "Japanese bands" limitation with Putty and it prevented any use of bands higher than 20M. I unabled the "Japanese bands" and now my Hi-band QDX works like a charm. 73 - Pierre - FK8IH

I'd have better luck tying a bow tie onto a deer tick than replacing that!? Best of luck, really. K3RTA?

I have worked on about 20 different QMX rigs for fellow hams. ?I made up a set of linear regulated ?PS boards for this kind of testing. ?3.3V from the existing linear regulator and 5V from a bench

Thanks, Hans. At least now I know that it's not me.? I really have missed the really sharp, yet clear filtering of adjacent signs and low RX noise floor from an earlier radio in your line of

Phil, Set your voltage to 8 or 9 volts. Milt w8nue

Sorry if this is covered elsewhere (I’ve tried …) I’d like to modify my “first edition” QDX to receive on 15m. ?It’s not entirely clear to me to what extent the hardware and firmware

When I plugged in QMX (built for 12V) and pushed left encoder, nothing happened (power set at 7V/200ma limit). Pushed it a few more times, and power did come on at 165ma, but then went off. Tried

When I plugged in QMX (built for 12V) and pushed left encoder, nothing happened (power set at 7V/200ma limit). Pushed it a few more times, and power did come on at 165ma, but then went off. Tried

A new chat has been created: Hello. I posted recently about this issue but thought I would explain a little more. The reception on all the high bands is excellent but it will only transmit on 20M

The software is still very much at an alpha stage. There are quite a few usability bugs to sort out. Soon, I am sure the big features will be ready. I haven’t been planning on SSB till next spring.

Giuseppe it looks like you have 2 turns of the #22 (0.60 mm) wire on the T507 transformer. I believe the #22 wire should only got through each side of the core one time!! -- 73, Rick VE7TK Website:

I just completed the high band version (5) of the QDX. Everything seems to be correct and all continuity tests are a go. Problem is it will not go above 20M. I have installed the jumper, but no

Thank you Mike and Mike. I didn't know this had not yet been implemented in firmware.? All part of the fun. Each FW update is like a little gift.

Yep. That works! Thanks, Jonathan!! 73, Randy, KS4L

In future firmware the SMPS frequency will be automatically adjusted to move the harmonics out of the way. 73, Mike KK7ER

Hi Hans Thanks for your help so far So I checked the mainboard by * supplying 3V3 from a linear regulator - CPU runs (can connect putty) * installing the 3V3 SMPS board then applying 12V to the