with new main board high band is not working correctly
Posted: 26 Mar 2023, 20:07
Hi!
I had a super working tru sdx transceiver, one day suddenly the main board died (Atmega was hot-no function). I ordered a new main board assembled it and the low bands working normally, the high bands only on the lower bands, at 28.500 I have only 1,2 watts and 16% effeciency, at 28060 3 watts and 45% eff. What I recognize was that the oszillator freuequency on the old working main board was near the 270000, the new is on 27001350. I have two working high bands now, because i thought something with the high band is also not working, but now i now there is something wrong with the main board, because both high band kits are working with the same problem that the 10m band is not working above about 28.250 mhz. Is there any possibiity to send it back, if really the main board has some issues? I bought a new main board a second high board, now I don´t want to order a new mainboard again, because everything is assembled perfectly, also the second harmonics on the nanovna are correct.
Any ideas??
I had a super working tru sdx transceiver, one day suddenly the main board died (Atmega was hot-no function). I ordered a new main board assembled it and the low bands working normally, the high bands only on the lower bands, at 28.500 I have only 1,2 watts and 16% effeciency, at 28060 3 watts and 45% eff. What I recognize was that the oszillator freuequency on the old working main board was near the 270000, the new is on 27001350. I have two working high bands now, because i thought something with the high band is also not working, but now i now there is something wrong with the main board, because both high band kits are working with the same problem that the 10m band is not working above about 28.250 mhz. Is there any possibiity to send it back, if really the main board has some issues? I bought a new main board a second high board, now I don´t want to order a new mainboard again, because everything is assembled perfectly, also the second harmonics on the nanovna are correct.
Any ideas??