Topband: Coupling between bev and other antennas

Tom Rauch W8JI@contesting.com
Wed, 11 Sep 2002 07:44:43 -0400


> >It also caused the IC-775DSP final power transistors to blow!
> 
> Seems like something else was going on to blow the output transistors>

The 775DSP has control system timing problems that generate thumps 
and bumps when on CW split, as well as severe leading-edge power 
overshoot in the PA.

None of that is good on the PA transistors, or other people trying to 
receive weak signals nearby. I would suspect the power overshoot as 
causing the problem before the RX antenna.73, Tom W8JI
W8JI@contesting.com