[Milsurplus] Early Navy receiver multicoupler

[J. Forster]

The BB-59 has Radio Central intact, so there might be a useful data point
there.

Best,

-John

==========


> Just found some photos of these CKB-50172 Multicouplers in use -
>
> Guam 12/44 - looks like these multicouplers I think?
> http://www.navycthistory.com/images/Guam_029_big.jpg
>
> And definitely they are here at Skaggs Island 6/45
> http://www.navycthistory.com/images/skaggs_1945_11_big.jpg
>
> I think this photo on BB-55 shows, at each LOP, a common trunk with
> resistive taps (Rob Flory knows) plus a separate jack running back to
> the patch panel.
> http://www.navy-radio.com/ships/bb55/rad1-104.JPG
>
> And this earlier photo on Guam in 1944 looks like rcvr leads running
> up to trunk lines in the overhead? Hard to tell.
> http://www.navycthistory.com/images/Guam_V_big.jpg
>
> cheers,
> Nick
> www.navy-radio.com
>
> On Tue, Jul 6, 2010 at 8:21 PM, gl4d21a at juno.com <gl4d21a at juno.com> wrote:
>> 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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