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Hi all, I completed my QMX build, and it won't power on. I took my time and was very meticulous. Or so I thought. When I power it on with the left encoder, nothing happens but I notice that IC101 gets

The QMX Rev. 1 that I had assembled some time ago recently stopped working after making many CW and SSB contacts with the beta SSB firmware. By-the-way, the calibration went nicely. No issues there.

I have found a great variety of 3D printed battery adapters/breakouts on EBay for my Dewalt 20V and EGo 56V batteries and have various fixed and variable converters which run off them. No hacking

Would you share a connection/block diagram and perhaps NaP3 setup screens?? I want to set up a panadapter with my QMXs as well. Any gotchas? Thanks and 73, Don N2VGU

Jeremy, if you have 5v on LCD pin 16 and close to zero volts on the drain of Q100, then you need to check continuity from LCD pin 16 to Q100 drain. They are supposed to be connected together. Having

Hi Ron, Thanks again for your quick response. I checked voltages in the LCD pins and I have 5V on pin 14, 12V on pin 15 and 5V on pin 16. On Q100 I have very low voltages on all 3 terminals (0.2V on

I replied to you privately Sandy.

Because that jumper wasn't connected, the dummyload wasn't active? By "Finals" you mean Q503 thru Q506? OK, that's definitely mybad! Luckily I have a transistor tester and a couple dozen of those

Figured it all out, it was FINISHED doing the calibration but gave no indication that it was completed. I got PUTTY working and was able to see what was happening and then realized that the

Nice! I had similar thoughts, and now plans to try mine with a Milwaukee battery I have. Thanks for sharing. -Nate N8BTR

I was wrong! I just setup NaP3 and everything is working exactly as advertised. I have a lovely, wide, panadapter and the front panel audio is working for CW bandwidth. Need to tweak an offset or two,

There is a pre-release here if anyone wants to play with it. It assumes you have a Java run time environment installed. https://github.com/sipsmi/qmxwidget/releases/tag/alpha-0-1

I'll say it first...you might have already blown the finals, not having the load connected. 73 Frank

They are 6 mm long, but the thread inside looks deep enough for an 8 mm...6 is plenty long enough -- Jean-Jacques - F5IJO FISTS#17008 LICW#5902

FWIW, I removed and remade T507. I had made it with wires B and C being jumper wire, not actual magnet wire. It's now rebuilt and reinstalled, solder joints confirmed, but still now Power.

Hi Andreas. That issue you had with the fuses most likely deleted the EEPROM file. That file is proprietary and not published. You will probably have to order a new chip from QRPLabs to get going

I have been getting USB device errors until this morning and fairly sure the QMX was not drawing any current. But this morning noticed it was using abt 50ma after firmware update shutoff the backlight

Did you install the jumper at JP501, behind the BNC connector? Roger ?Get BlueMail for Android ?

Ok. Then I am not the one you need. Over to the other experts! Roger ?Get BlueMail for Android ?

Hi everyone, I recently completed building my QMX kit and it seemed to go well on the surface. The unit powers on just fine, the display works, menus respond, and voltages on the 3.3V and 5V SMPS look