[Hammarlund] Vintage Repair Techniques

entropycat at verizon.net entropycat at verizon.net
Tue Dec 22 19:37:19 EST 2009


Greetings to the list:

   I will throw in my $.02 worth on replacing micas inside IF cans.   I had 
an intermittent crackle on CW in my HQ-129 which turned out to be the mica 
inside the BFO can.   I tried to replace this cap by removing all vestiges 
of the old cap's leads from the terminal, and ended up destroying the 
prepared end of the BFO coil wire.

   Now, the HQ-129 BFO coil is a Pi-wound coil wound with Litz wire, which 
is the very devil to solder to.   I was unable to do it, so I ended up 
having to re-wind the BFO coil using a scramble-wound technique and 
conventional magnet wire.   It works well now, but I will never again 
attempt to solder directly to a terminal that also contains a Litz wire coil 
lead.... I will cut the old cap out and use the hook splice technique to put 
the new one in.

   On a completely unrelated subject, is there a list like this one for Swan 
folks?   I some questions about a couple of Swan 350's I am restoring.

73,
Jim T.
KB6GM
entropycat at verizon.net
"entropycat" copyright 2008 James K. Thorusen
All Rights Reserved



More information about the Hammarlund mailing list