[Heathkit] HR-10 IF leakage

[Ron Youvan]

> Wonder if anyone has noticed 1680 khz IF feedthru with the HR-10 on 75 
> meters?  I hear it on my HR-10 (plain) but the circuit for the HR-10B 
> is the same as far as I can tell.   I tried a quick series trap but it 
> attenuated the 75 meter signals way too much.  I'm not hearing it on 
> 40 and up, probably because the antenna circuit provides enough 
> rejection.

> By the way, I increased the value of the coupling cap feeding the AF 
> Gain pot - Heath used only 500pf which made the audio sound pretty 
> tinny.  Easy mod if you like a little more robust audio.

   I don't know the rig, but what is the IF frequency?  Is it near
1680 khz X 2 = 3360 kHz?  If so there is your problem.
   The problem may relate to your nearness to and/or the harmonic
content of the 1680 khz station.
-- 
    Ron  KA4INM - I think I could live on my pay if
		 governments didn't take half!