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Have you done a Factory Reset yet? What version of firmware are you running? (If you have done the reset, don't think there's any point in doing it again...) Paul

Hi Guys! This is my first post in this forum, and my fresh QMX 10-20m build seems to roughly follow the pattern that are posted here. QMX high band rev 2 RWTST transformer 12V 1_00_014 50Ω 5W QRP

Hi Muhsin Please see previous reply, I already explained this. What works best in practice and what is predicted by theory is not always exactly the same. Calculation, modeling, simulation is all

The original problem has resurfaced. It did not move with the encoders. I put the left encoder in place of the right, and right in place of the left. After this, initially turning the left encoder

Hmmm... That it /moves/ with the encoder, is rather incriminating of the encoder... Did you say that you've replaced the encoder once? You might check that the switches on the encoder are opening

Paul - the CCW seems to have resolved itsself. Maybe I was seeing ghosts. I swapped the encoders and as before the right side functions correctly. Now turning the left side is unresponsive in either

Put the keyer into straight mode.? Then simply hold down the paddle.

Hi Nino, Brandon-- Some random responses on my part: * I too have noticed that, when the frequency goes too far up or down, it gets "stuck" and requires a power cycle. Reported to Hans. * SSB

Hi Brandon, Today I replaced the right encoder and the situation is still the same. In my opinion, it is not a hardware problem. Perhaps there should be something wrong with the board or the

Version 12 of what? 72 / 73, Bill, N4QA/4 in OKI; previously WB4HIO and, before that, WN4BJC

Using version 12. Is there a way to lock into transmit so I can measure output and/or activate a QRP tuner? Thanks and ‘73 Jim WX8J

Sounds good to me, too! JZ

Hey Mike - I wouldn't worry too much about those readings - A lot of people have had similar numbers, see here

Probing around is always something of a risk in that one slip can make your rig toast. That said, looking at the drain waveforms at the BS170 might provide a clue. Specifically the down level which

It's crossed my mind that they might be particulary hot transistors. I don't know the current draw right off hand, nor have we keyed it long enough to notice any heating. We do have a scope.

T37 AL is 1.5 on the table it takes 1.637 not consitent with the other Ls 73 muhsin TA1MHS

Ron, Jeffrey: Thanks for the quick reply! Turns out I had the worst kind of solder joint that you can experience. It was nice and shiny, was conductive, but it was high resistance, and it slowly

Another excellent resource. https://www.diodes.com/design/support/technical-articles/understanding-semiconductor-thermal-resistance-data/ Note the comment about the majority component of heat flow

Hi Muhsin No. The turns in the manual are correct. This has come up several times before. For a given inductance the theoretical number of turns by calculation is a non-integer. But practically

That's quite a puzzle, Mike. I'm wondering if you guys won the lottery on BS170 transistor specs. Threshold voltage at the high end of spec will reduce output power and thresholds at the low end will