[Milsurplus] Early Navy receiver multicoupler

[Don Davis]

There was a TMC  coupler like the Nt50172 on ebay a few weeks ago.  Went 
fairly cheap.

73 de don ad6pb


----- Original Message ----- 
From: <gl4d21a at juno.com>
To: <navy.radio at gmail.com>
Cc: <milsurplus at mailman.qth.net>
Sent: Tuesday, July 06, 2010 5:21 PM
Subject: Re: [Milsurplus] Early Navy receiver multicoupler


> Group:
>
> These are questions for which I have been seeking answers for some 
> time now.  It seems everyone who operated multi receiver sites in the 
> 30s and 40s has developed amnesia.  Rhombics and 600 ohm line could 
> easily tolerate resistive dividers feeding the 200 ohm input Z of 
> receivers of the day, but little documentation and zero memory seems 
> to remain.  Thanks for turning this up, Nick.
>
> 73,
> George
> W5VPQ
>
> ---------- Original Message ----------
> From: Nick England <navy.radio at gmail.com>
> To: Military Surplus Mail List <milsurplus at mailman.qth.net>
> Subject: [Milsurplus] Early Navy receiver multicoupler
> Date: Tue, 6 Jul 2010 17:52:21 -0400
>
> In case you are curious about such things -
> Manual for 1943 vintage 4-output Navy multicoupler CKB-50172 is now on
> line - link at
> http://www.navy-radio.com/rcvr-coupler.htm
> There's also a data sheet on the RXA which had three 10-output 
> multicouplers
> Both made by Hoffman
>
> I've seen a similar vintage Signal Corps unit, also using 6AC7's but
> with Western Electric instead of Navy coax connectors.
>
> Before these, I guess installations used ?? ohm coax with resistive
> decouplers for each receiver? I think that's what I have seen on WW2
> battleships?  And maybe open wire with resistive decouplers for some
> installations....Rob? Anyone?
>
> cheers,
> Nick
> www.navy-radio.com
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