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Old June 16th 09, 01:53 PM posted to rec.radio.amateur.boatanchors
Radio[_3_] Radio[_3_] is offline
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First recorded activity by RadioBanter: Jun 2009
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Default Hallicrafters S-38 loose lead question

On Jun 15, 8:35*pm, "Paul P" REMOVE paul @ REMOVE ppinyot .
REMOVEcom wrote:
You may already know this - C25 inject the BFO oscillations. *It is a simple
wire wrapped around an detector wire. *You can see C25 in this schematic:http://www.nostalgiaair.org/PagesByM...2/M0008862.pdf

I do remember finding a strange wire on the S-38 that I recently restored..
It killed band 2. *I compared the actual circuit to the schematic and put it
back to the schematic. *You can read about it starting at the third
paragraph hehttp://www.ppinyot.com/H/s-38.htm

Not documented on the web page, I later ran into "Silver Mica Disease". *I
took apart the IF cans and added external caps.

Other than that I do not know.
Good Luck,
Paul P.

"Radio" wrote in message

...
. *I have had an S-38 on the shelf for a few years and finally got
around to recapping it this weekend. *All went well and it does play
but not as well as I figure it should. *I did find one loose wire that
is attached to S1B terminal “O” and goes nowhere. *There is another
lead attached to that same terminal which goes to the antenna terminal
lug 4. *I don’t see this extra lead on the circuit diagram and it does
appear to be a lead that was there when the rig was built. *It look
like a cream colored lead with red stripes. *I wonder if anyone has
any idea where this lead is supposed to go? *I


Thanks for the web page Paul. The wire in the picture on that page
appears to be the same one that I have been questioning. That would
certainly explain why it is not connected to anything. My band number
2 is active so that would also be a good indicator. I did listen to
the radio last ngiht and could receive SW from all over the world on a
4 ft piece of wire.
Thanks to all who have responded to my question! This group sure is
a great tool for the radio hobby!
Thanks again. Do any of you have any thoughts or comments on
restoration of an RME-84 receiver? That is next on my list of things
to do!
Karl KC9AA
New London, WI