On Thu, May 22, 2025 at 06:38 AM, n4buq wrote:
I had opened an older version of the schematic which doesn't have that relay.
I see it now on the later versions. Apologies for the interruption.
Looking again: the offending relay was K490, which is the bandpass limiting relay; I misread the numbers on the board since I wasn't using a flashlight. From the description and schematic, K480 bandpass-limits the trigger, and I believe that was added in later revisions as you pointed out. I was pretty sure it was the lower rear relay (490), not the middle one (480), so thanks for making me take a second look! I'm only documenting this for the next poor slob who runs into it, which might well be me.
thanks,
Adam