AFT05MS031N OLD PWR Trans inside x6100
drain - source = 3.96mohm
dain - gate = 10.13kohm
seems good
After removed from x6100
drain - source =3.96mohm
drain - gate = infinit
seems good
?
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value from new AFT05MS031N
drain - source = 4.16mohm
drain - gate = infinit
?
when atu board not connected?
and quick tune from cat wsjtx
display 16.2w see picture
?
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I believe that the problem comes from the atu which selects the wrong filter, my problem appeared after a transmission in ft8 (CAT). I checked the fuse, I replaced the pwr output, checked the bias of the transistor, I checked all the atu relays, I think there is a bug with the firmware code which activates the wrong atu filter, it would take a trick to erase the memory of the atu?
