[Milsurplus] A Cable Question

[Jim Whartenby]

John
I just checked TM11-487 dated 2 October 1944 for information on WW2 coax.  On 
page 492 is the data on RG-8 which is still listed as 0.405 inch O.D.

Looking further, for the CASSF-50-1 you mentioned I found that it indeed cross 
references to RG-8/U and is called out in the column headed as "Replaces Old 
Cable Number".  Other numbers listed as replaced by RG-8/U are:  PT5, WC543, 
WC549.

So I would assume that the jacket is butted up to connector but does not connect 
to it as is with modern constant impedance connectors.
Regards,
Jim


----- Original Message ----
From: J. Forster <jfor at quikus.com>
To: arc5 at mailman.qth.net; milsurplus at mailman.qth.net; 
Vintage-Military-RADAR at yahoogroups.com
Sent: Wed, July 27, 2011 6:54:24 PM
Subject: [Milsurplus] A Cable Question

OK, this is involved:t.

I'm working on a LORAN-A receiver for a Museum Ship and the antenna
connector is an Amphenol Type 93. This is an early WW II aardvaark, used
in only a few places AFAIK. Thanks to a generous list member, I now have
the proper connector in hand.

However, the connector will not take standard RG-8 or RG-214 cable. Their
OD is to big.

Assembly instructions from another list member calls out Navy Type
CASSF-50-1 cable.

Furthermore Google finds in "(1954) AN 16-30ARC5-2 Handbook Maintenance
Instructions AN/ARC-5" that this cable is used to connect a VHF ARC-5 to
the antanna and crosses it to RG-8/U.

However, a check of current catalog of this cable specifies an OD of 0.405
nominal, which will not fit.

Apparently, the OD of RG-8 has changed over time. I think cable of OD
<0.380" will work. The center conductor needs to be stranded.

So, does anybody know where I can get a few (6?) feet of the stuff, even
more preferably with an PL-259 on one end? I'd buy a roll of maybe 100' if
there is a source.

Thanks,

-John

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