07-04-2013, 05:54 PM
Hey thanks for your thoughts. My "guess" was 3000pF but I do not know which dots are 1st and 2nd etc... Anyway, the slug has very little effect on the output - hardly any change over multiple turns of the slug. But, you could say there is sort of a peak - however broad. Thing is I've already changed all the caps - except the ones in the IF coils. Putting my scope probe on the plate of the 2nd 7B7 (pin 2) kills the oscillation and I actually get stations. ??!! Dont have a 3000pF cap. Wonder if a .0047 would work? I'm at my wits end with this thing. I get how radios work and the IF works, but clearly I have something more to learn! - just can't beat this oscillation thing.
