Hi Ted,

I am preparing to replace Q90 in my V3 and I will be installing the diodes. I have used them in other solid state rigs in the past and a couple of time I have had to replace them (two different radios). The usual failure mode is for them to fail-short. It becomes obvious then that they have failed because incoming signals pretty much vanish. In both cases the rest of the radio was preserved. The sacrificial diodes did their job.

I have never had any problems with radios that have those diodes installed. Most of the caveats that have been posted here are *speculation* about what might happen. It hasn't happened. None of the posts have asserted that any problem has actually happened. I have two experiences where the front ends were saved and no experiences where the diodes caused any problems. And that is experience, not speculation.

73,

Bill KU8H

bark less - wag more