开云体育

Mr. Hands Jumper for pins 3~5 is not required. The middle ring of the plug is correctly connected to the positive signal. 73 yuji JJ1GPM

Used a loop and it looks to be well flowed on both sides of the board.? I will take it out, Carefully, then crack up the heat on my soldering iron to make sure that the enable is completely burned

Hello all I do believe Yuji-san is 100% correct and has solved the problem. The PCB tracks are wrong. It needs a jumper wire from pins 2-4 and from pins 3-5. I will prepare some documentation for a

Ok, thanks John, Hans.? If the G thing is just an RF issue I can manage it and I'll disable GPS protection for now.? CW is now completely usable and seems faultless to me. 73 Peter, GM0EUL

A few of us would be happy with just SSB ... of course, implementing it will require fixing some of the other requests. 73 Jim N6OTQ

Where can I find the definitive first time, step-by-step, boot up instruction for a new QMX? I need the pre-k instructions for 5 year olds please. Confused because instructions go from 2.30, Final

Hello Hans and Hari When you insert a 3.5mm plug into the PTT terminal, pin2 and pin4 of X201 will be disconnected. And the tip of the plug only contacts pin2. Pin2 is not connected anywhere on the

Hi Roy The circuits that drive the PTT tip and ring are all on schematic page 2 and they're physically located right under the 3.5mm PTT jack so it's easy to find them. I'd look visually for any

You're way ahead of me, Hans! Thanks for the explanation. -- 73, Dan? NM3A There are moments when everything turns out right .... Don't let them alarm you; they pass. -Jules Renard

Hi Peter Yes as John said. It's an RF issue. It isn't resulted to the new firmware version. Common mode stuff again probably. If you turn GPS Protection off that will stop it though that's treating

Queston on the +5v on TX for PTT Out ... I'm wondering how much current can be safely supplied with +5V on TX. If I can't repair the fault in my QMX, can I instead use the +5v out to trigger a small

Peter, The G coming on suggests RF getting in on the keyer input. 73 John G4YTJ

Thanks Hans, the iambic B now seems great, no hint of funny behaviour or extra dits.? The only other problem I'm having is that after a few minutes of QSO the 'G' comes on the screen and disables the

Hi Hans. Thought I'd report my grounded PTT Out on TX test results here in a new topic ... that I suspect will be short lived. Firmware: 016 QMX: Rev 1 low-band I reproduced your LED +3.3 volt test

I have confirmed that my issue is IC402. I used the diagnostic / temporary workaround listed in thread: /g/QRPLabs/topic/103670926#117862 And I can now receive, though of course

Hi Dan bar okay, numeric value just as good. Numeric gives more information. Two characters show 0-99 for example. Imagine how many bar characters would be needed! Also the current display contains

Thanks Chris KB1ZNLW for this detailed explanation and workaround. I had a similar issue with my 80-20 unit, except that in my case the voltage off the divider was VCC rather than 0V, but lifting the

I think a waterfall is not as useless on this display as it first seems. It would make seeing nearby signals easy. Even 60x8 pixels could be useful. If the FFT bins were 250hz wide, you would only see

Re: progress bar for audio volume bar okay, numeric value just as good. Whatever, it should only display while you are changing volume. There is precious little extra display area to dedicate area for

QMX, low bands, 4W in mobile antenna 1,5m length on my balcony fence. QSO from Erlangen Germany to Tenesee USA, 7615 km. Not bad for so low power and so bad antenna.