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Solved! I did what Hans says here: /g/QRPLabs/message/141354 This is 80m calibration looks like now. And I'm sounding great on 80m with PD on! -- 73, de BD8BTE op: Lun Yang

No, I don’t know about Jeff Moore. ? Can you provide more contact info. ?Send privately if necessary. Bill Buck , KJ5IVB

AIUI adding the GPS to the QMX+ will allow the PPS signal from the GPS to calibrate the TXCO.? This seems mostly be for the beacon modes but does the calibration apply for normal operation as well??

Hi George You can't type CAT commands one character at a time manually in a terminal because they time out faster than you can type. You can only use the terminal interface, which is activated by

Open putty and then just hit return, no additional characters.

*Greetings QMX+ Fans,* I am having an issue getting the virtual serial portion of the USB interface to work properly. Am running 01_01_003 on the QMX+. THANKS HANS, SSB WORKS GREAT! From Putty in a

Hello Bruce It was a PCB error. My fault not the manufacturing. We had to fix the 500 boards of that batch by soldering on the little wire to make the connection. 73 Hans

One for Hans … Used the latest V6 SMD version yesterday Less to do and makes wiggling the synth in and out of a U3S stack much easier Curiosity. ?A super- tiny link wire, hand -added between the

Michael, please don't switch on your QMX+ in the moment. I will send more information later today. 73 Ludwig

Yes you’re right. It’s a typo. I meant Q501. I was checking the schematic to check where to look for a fault on the board. I realized that there might be an inconsistency between schematic and

Yep, I second that. I discovered exactly the same thing. The GPS module generates CW like pulses. It goes away with out it. For me, it was more obvious on the higher bands with wider filter (digi

GPS module causes the pulsing tones in mine too. Unplugging it clears them, but obviously not best solution! Im going to try decoupling the power local to it when I get the chance, and see if this

Thanks Stan.? I appreciate the reply...

Hi Randy The master of gibberish is ChatGPT ;-) As Ron said, it's because you have a connection fault on one of the data lines D0-D3 to the LCD. Earlier firmware used the LCD in 4-bit mode

Yes, the front panel and display are the same.

Bill, can you measure the current draw when you turn on the qmx?? If it is waiting for firmware,? it should be about 200mA, maybe a bit more at 7V.? If it is much less than that, or way more, there

I have replaced ic503 and bs170s. Everything is working great now! 73 N6HAN

A measurement of Vcc would also be useful, and how it changes. Maybe also touch D109 - I expect it will be getting hot as Vcc goes up above 3.3V. I'm wondering if you have a temperature-dependent

No, the 9V was a standard Duracell like you'd put in a smoke detector. I wasn't expecting much, just to see if the lower voltage helped or resulted in the same. Ultimately I think it was about the

Randy, I think that was about when the firmware started using all 8 of the LCD data lines. Prior to then it only used 4 of them. One of the 4 others may not be soldered well. Good