Hello all, I just found a new article by Owen Duffy (vk1od) on compensation of T/R relays.
Owen has a great site with LOTS of good tech info there. He really helped me with designing my 6 meter amp - as did several other folks here. Once I got my amp past the testing stage I thought it was close, but the SWR thru the T/R relay (bypass) was a bit higher than desired. Owen made the suggestions in his article and boy did it work! I put a 15pF (didn't have the 12pF) cap across the relay to ground as shown in his article and the SWR in bypass mode dropped right down to not measurable.
Owen has many more good articles on his site.
I'd like to say "THANK YOU" again to Owen for all his help,
73 de Ken H>