[Boatanchors] Halli SX-111

[Glen Zook]

I have found, especially when repairing radios made in the 1930s, that certain circuits actually need the bypass capacitor to be leaky.  In those circumstances I add a resistor (usually between 470K and 1meg) in parallel.  This seems to be true especially in oscillator stages.

Glen, K9STH

Website:  http://k9sth.com


--- On Sun, 8/23/09, rbethman <rbethman at comcast.net> wrote:

My experience is indeed the 50kc IF and in the 50.5 kc IF in specifically in the SX-101s.
 
I began replacing them one at a time.  Then test for function.  I changed one that was a stage bypass cap and the receiver stopped working.  I went back, put the pink Tiny Chief back where it just came out of and got the receive back.
 
I'm not sure if it is inductance or resistance.  I do not have a highly outfitted bench as some do.  Some things I have to either calculate or best guess it.  This IS frustrating to say the least.
 
Roy Morgan has also commented on this VERY same thing.  Where in nine years of archived E-Mail?  I have no clue!
 
It isn't an absolute thing, just something to be aware of.