[Milsurplus] A Cable Question

[J. Forster]

Hi Jim,

The cable goes into the connector shell from the drawings I have. I'm
beginning to think the connector hole is undersized or the cable OD
changed when WW II starte4d.

Best,

-John

=============


> 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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