[BC] FM20H3

[tg@btsg.com]

Whatever you do, ifyou replace the IPA sockets DO NOT use the original style caps!!  Use some
Silver Mica ones instead and solder them to the sockets.  You can get a kit of them from Harris. 
You can remove the sockets without disassembling the from then on, not to mention they last longer.

BTW: Get a short stool that will allow you to lie on your back on a pillow placed on top of the
blower box.  Much easier on the old frame (yours).  Sit on the stool or a box and lean back into
the transmitter (cover your face and eyes to protect you from the solder drips (A towel over your
face and safety glasses on the eyes). A good light is indispensable.

Tommy Gray

 
----- Original Message -----
From: DHultsman5 at aol.com
To: broadcast at radiolists.net
Sent: Mon, 05 Feb 2007 10:58:03 -0700
Subject: [BC] FM20H3

In a message dated 2/5/2007 1:49:37 AM Central Standard Time, 
kzerocx at rapidcity.net writes:
However, I remember having to replace several 4CX250B  IPA sockets, in an
FM-20H3, due to shorted, integral screen bypass capacitors.  After the
replacing the first one, the fact that I had to do it again always made me
want to cry.  Can you spell all-nighter with sore back for a week and solder

***************************************

After replacing theFM20H3 IPA tube sockets,  I stated I would never 
do that again.  Then a friend wanted me to help him with an old 
Collins 831-G transmitter and I grunted agreement.  We just removed 
the driver box screws and took the entire box to the well lighted 
work bench to replace the socket. He had done this before.  I still 
don't want to replace them on a FM20-H3.

Dave

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