Gordon,
Based on Hajo's serial number, it would have to be a V2.? There were only 150 DE versions made.
I am hesitant to advise Hajo as I do not have a V2.? I will make some assumptions that might help Hajo better describe what is happening with his radio.
My interpretation of the brief description is that no output exists in any mode.? He does describe that no audio shows up on the SSB display.? It is unclear if that is the same with CW or any digital modes.
Hajo,
What, if any, updates have you done to the software that came with the radio???
Does the radio receive FT8 signals?? Do not worry about proper decoding now.? Just verify that the FT8 tones are heard in the audio and that the waterfall displays the tones.
I have found that a bad software update or a corrupted ?SD card can cause these issues.? It seems to be related to the audio codec initialization.? The only way I could get my DE to work was to start with a fresh image downloaded from HFSignal/Ashhar Farhan's web page.? I am not sure what the correct image is for your radio.
I also have read that a calibration process needs to be done with the V2 sbitx radios.? I can not do this with my DE as it requires the SWR/Power sensor, which I do not have.
The first step that I would do is to verify that the audio codec is working.? That is the receiving test described above.
If the receiver is working, you could have blown the finals.? That happened frequently with the early V2s as there were issues with the final MOSFETs mounting.? Gordon might be a better source for this, as there are some differences between my DE and your V2.
73
Evan
AC9TU
