[Milsurplus] BC-611 PTT help

[Gene Smar]

Mark:

 

     Thanks.  I’ll check for a bent contact when I get around to this radio once again.  Someone also suggested the return spring might be too tight.  I‘ll see if I can cannibalize a spring from another -611 chassis and check that out as well.

 

 

 

73 de

Gene Smar  AD3F

 

From: Mark K3MSB [mailto:mark.k3msb at gmail.com] 
Sent: Wednesday, May 20, 2020 9:35 PM
To: Gene Smar <ersmar at verizon.net>
Cc: Military Radio Collectors Association (mrca at mailman.qth.net) <MRCA at mailman.qth.net>; List Milsurplus <milsurplus at mailman.qth.net>
Subject: Re: [Milsurplus] BC-611 PTT help

 

Hi Gene

 

I had this issue on one of the 611s I'm working on.   I found one of the switch contacts was bent too far.   I **VERY** gently pried up the leading edge of the offending contact and that solved the problem.

 

73 Mark K3MSB

 

On Wed, May 20, 2020 at 8:41 PM Gene Smar via Milsurplus <milsurplus at mailman.qth.net <mailto:milsurplus at mailman.qth.net> > wrote:

Gents:

     I have a pair of -611s that I intend to bring to various demos such as
MRCA, RCA (the Club, not the Company), Ham club meetings, etc.  My latest
acquisition is a 1945 Galvin model F and it seems to work just fine.  The
other is made by Nippon Electric in 1953 but its PTT switch operates very
sluggishly.  That is, it requires quite a bit of force to get it to move
from RX to TX.  I removed this -611's PTT switch assembly and cleaned it
quite a bit with dry polishing.  It's still tough to operate.  

     Have you any suggestions on how I might be able to free up the movement
of this switch?  I don't want to exhibit it in front of an audience when
they won't be able to operate it easily.  Would contact cleaner on the 14
switch poles be advisable?  

     Thanks for any guidance you can provide.

73 de
Gene Smar  AD3F


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