Petr, I put the diodes before a common mode choke which I think is the right
place for them to be as the choke will isolate the front end of the preamp
from the diodes. If we were talking about uWaves, then it would be a big issue
and one would use a relay to provide the isolation on TX and pro
Hi John,
congrats...
Just 1p note > be careful with the back to back diodes in the front-end.
These are not the best solution in some cases because of possible IMD
issue.
73 - Petr, OK1RP
B: goo.gl/Fd2JhJ
On Tue, Oct 31, 2017, at 07:50 AM, John Randall via Topband wrote:
> Lat night I worked tw
Lat night I worked two stations YU1XA and I5JVA and was happy with that, then
went to bed. I have now cured most of my QRN and common mode problems and could
see weaker stations on the flex panadapter. Silly me, I did learn a painful
lesson £2.50 when my preamp went dead and upon opening it up,
