On Aug 24, 2022, at 7:21 AM, Niels Jalling <niels@...> wrote:

?After a short vacation I am back in the shack.

I changed the IRFZ24's with a new set, adjusted bias and was ready to test.

CW first with a dummy load. Output looked good on the scope. Output 25W on 20m with 2tone signal. Began flattopping with more power. Maybe my powersupply is too small.

Then I tried sending some letters from the keyboard. The very first dot or dash was never sent. So A became T, K became A, etc.

The K3NG mod seems to fix the keyboard cw-problem.

Then I connected a paddle. There is a timing problem too with a paddle. A short press on the can result in a very short dit or dash. Again the polling frequency is the problem. (There is something called interrupts)

Then I switched to FT8.

First issue: there is no way to turn the volume down. The T41-SDT book placed over the speaker solved this :-)

In the FT8-demo video Ashar showed how easy a qso can be. But the current software does not work that way. I tried several times and when someone answered my CQ the next steps for a QSO didn't happen.

Then for calling CQ you have to press the CQ-button (F5) for every period instead of calling CQ several times and waiting for an answer.

de oz9ny, niels

PS The only positive: The IRFZ24 survived