hello everyone, I’m rescuing a ft-301ad from the scrap yard. The issue I’m currently wrestling with is that the protection circuit is always engaged, preventing transmission. I have the linear amp removed from the rear and the 2 BNC connectors jumpered and the radio connected to a dummy load. When the radio is powered on, the light is already blinking. I don’t see any obvious damage inside the rig and was hoping this might be something people have had trouble with before. The pb-1445 described in the manual available online appears to be slightly different than mine, but I did try adjusting the 2 adjustable pots on the board that are similar to those mentioned in the manual for adjusting the protection circuit. No change was observed.?
Anyway, hopefully someone can point me in the right direction!
KI7WQH
KI7WQH Steve