08-18-2014, 11:51 AM
C17, C19, C22, C24, and C13 have been messed with pretty severely. When I got the set, they were screwed down tight, so I backed them all off just a bit, but I'll be having to find the IF from scratch. Start with the grid cap of the 75 and the first two trimmers, then move to the grid cap of the 6A7 and the other two trimmers, and finally try to find 600KC with C13? Assuming the 6A7 is oscillating at some point. I can move my Philco 42-340 into the workroom and see if I can hear oscillation, first. Any advice here is appreciated.
Charlie in San Antonio