[Milsurplus] Identify IF transformers

[Sean Barton]

Byron,

Do they look like these?
http://www.fidnet.com/~seanbart/bc-348_if_cans.JPG
If so, they would be IF transformers for a BC-348.  The IF frequency is 915 
Kc.

Sean

----- Original Message ----- 
From: "Byron Tatum" <bjtatum at ev1.net>
To: <Milsurplus at mailman.qth.net>
Sent: Wednesday, July 26, 2006 10:59 PM
Subject: [Milsurplus] Identify IF transformers


Hello -
    I bought some NOS surplus IF transformers and was trying to ID them. 
They are in 1-1/4" square cans about 3-1/2" tall and have the phenolic 
material showing at both ends. They are marked " 1  IF", "2  IF", etc. to "4 
IF". The grid terminal is on top of transformer. All of them have part # SC 
722. Some have a grid wire out side {otherwise same as others} and are 
marked # SC 718.  I saw dates of 1944 marked on some. They are a decent 
looking IF unit, the coils on them are slug tuned and they are about 135 
through 160 uH. However, one of the coils in the " 4  IF" units is around 1 
mH. I need to check them further but I suspect they are for around 1 to 1.2 
Mhz. area. There is one that you can tell it belongs with these and is 
marked " CW OSC" and it has a small air trimmer shaft protruding out bottom 
of can.
                    Thanks, Byron.
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