Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old June 15th 09, 07:15 PM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Jun 2009
Posts: 4
Default Hallicrafters S-38 loose lead question

.. 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
  #2   Report Post  
Old June 15th 09, 08:49 PM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Jun 2006
Posts: 487
Default Hallicrafters S-38 loose lead question

Radio wrote:
. 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


Was that a "gimmick" (a capacitor made by twisting two wires together)?

Geoff.
--
Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM
  #3   Report Post  
Old June 16th 09, 12:17 AM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Oct 2006
Posts: 527
Default Hallicrafters S-38 loose lead question


"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

There is a readable S-38 manual at Nostalgia Air and I
think also at BAMA.
From the schematic neither wire belongs there. The
terminal on the bandswitch goes to the top of the secondary
of the RF transformer for Band-2. My schematic shows only
three antenna lugs and they are not numbered. I suspect that
both wires may have been someone's modification.
The "gimmic" mentioned by another poster is used for
the BFO and is not in this section of the RX. I have an S-38
and could look at the bottom if you like but have no way to
make photos of it.



--
Richard Knoppow
Los Angeles
WB6KBL




  #4   Report Post  
Old June 16th 09, 01:12 AM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Jun 2009
Posts: 4
Default Hallicrafters S-38 loose lead question

On Jun 15, 12:15*pm, Radio wrote:
. *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


Hi Guys,
Thanks for the help so far. I made an error in my posting! The
other lead that is attached to S1B terminal "O" goes to lug 4 on the
antenna coil NOT the antenna terminal.
I will send you a picture Goeff and Dick
Thanks,
Karl
  #5   Report Post  
Old June 16th 09, 01:45 AM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Oct 2006
Posts: 527
Default Hallicrafters S-38 loose lead question


"Radio" wrote in message
...
On Jun 15, 12:15 pm, Radio wrote:
. 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


Hi Guys,
Thanks for the help so far. I made an error in my
posting! The
other lead that is attached to S1B terminal "O" goes to lug
4 on the
antenna coil NOT the antenna terminal.
I will send you a picture Goeff and Dick
Thanks,
Karl

OK, when I get the picture I will open the bottom of my
S-38 and see what there is.



--
Richard Knoppow
Los Angeles
WB6KBL





  #6   Report Post  
Old June 16th 09, 03:35 AM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Jun 2007
Posts: 118
Default Hallicrafters S-38 loose lead question

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 he http://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

  #7   Report Post  
Old June 16th 09, 01:53 PM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Jun 2009
Posts: 4
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
  #8   Report Post  
Old June 16th 09, 03:45 PM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Jun 2007
Posts: 118
Default Hallicrafters S-38 loose lead question

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.

Karl,
Glad to be of help.
Paul P.
  #9   Report Post  
Old June 16th 09, 10:24 PM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Mar 2009
Posts: 18
Default Hallicrafters S-38 loose lead question

On Jun 16, 11:45*am, "Paul P" REMOVE paul @ REMOVE ppinyot .
REMOVEcom wrote:
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. *

Karl, *
Glad to be of help.
Paul P.


Crazy question re foregoing!
The Hallicrafters S38 and S53 were post-war receivers; correct?
So that extra wire would have nothing to do with that war time ruling
that there were instructions that the short wave-bands of receivers in
certain parts of North America, during WWII, be disabled to
(supposedly) prevent enemy spies from receiving instructions via short-
wave?
Sounds like some of the same paranoia that we hear today!
More personally; in Britain, I recall as a child during WWII,
listening with my grandfather to propaganda broadcasts from Germany;
just a short distance across the North Sea.
Particularly to 'Lord Haw Haw' (William Joyce), who operated much in
the manner of Tokyo Rose; trying to disseminate false information and
British public dissatisfaction with Allied governments and military
commanders. Didn't work btw.
Some of his material was greeted with guffaws and remarks such as
"That's the third time he's sunk that ship"! After the war it was
ruled that he was a traitor, having held a British passport, despite
claiming an Irish grandfather and he was hanged. Also recall my father
sarcastically remarking "Pity they hanged him; he could have continued
his career as a radio comedian"!
Thanks for reading.
  #10   Report Post  
Old June 16th 09, 10:52 PM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Jun 2007
Posts: 118
Default Hallicrafters S-38 loose lead question

This seems to be the best explanation yet of why that wire was there.

PP



Crazy question re foregoing!
The Hallicrafters S38 and S53 were post-war receivers; correct?
So that extra wire would have nothing to do with that war time ruling
that there were instructions that the short wave-bands of receivers in
certain parts of North America, during WWII, be disabled to
(supposedly) prevent enemy spies from receiving instructions via short-
wave?
Sounds like some of the same paranoia that we hear today!
More personally; in Britain, I recall as a child during WWII,
listening with my grandfather to propaganda broadcasts from Germany;
just a short distance across the North Sea.
Particularly to 'Lord Haw Haw' (William Joyce), who operated much in
the manner of Tokyo Rose; trying to disseminate false information and
British public dissatisfaction with Allied governments and military
commanders. Didn't work btw.
Some of his material was greeted with guffaws and remarks such as
"That's the third time he's sunk that ship"! After the war it was
ruled that he was a traitor, having held a British passport, despite
claiming an Irish grandfather and he was hanged. Also recall my father
sarcastically remarking "Pity they hanged him; he could have continued
his career as a radio comedian"!
Thanks for reading.
Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hallicrafters S 85 question Mike Boatanchors 4 March 22nd 04 11:35 PM
Hallicrafters s-38C question Chris Kilmer Boatanchors 21 March 6th 04 07:25 PM
Hallicrafters Question TchrMe Boatanchors 3 December 26th 03 12:11 AM
Hallicrafters S-77 question --Bill-- Boatanchors 1 July 18th 03 03:16 PM
Hallicrafters S-77 question gil Equipment 0 July 18th 03 11:25 AM


All times are GMT +1. The time now is 06:17 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017