[Milsurplus] TA-12 XMTR in Pairs?

[Michael Hanz]

Ah!  Okay, that's part of a series of WWII Bendix Interphone systems 
(IM-2, IM3, etc.) that included a bunch of components which provided 
flexible control over a variety of comms equipment.  The heart of the 
system was a 3 watt interphone amplifier with the designation 3611.  The 
original 3616 was tailored for the TA-12, but the 3616B included the 
capability for controlling 8 channels - presumably to accommodate the 
TA-2 variants.  See attached three page pdf that shows _only_ the 3616 
but mentions the difference between it and the 3616B.  I can send you a 
higher resolution version if you wish, but it's over a megabyte.

The junction box was commonly a part of Bendix products, a marketing 
strategy to eliminate the need for an engineer to worry about such 
things when adapting the system to an aircraft.  What you received was a 
complete system when you wrote out the check.  All you needed to do was 
provide the cables.

73,
Mike  KC4TOS

On 5/13/2016 10:32 PM, George Babits wrote:
> It's a 3616B
>
> ----- Original Message ----- From: "Michael Hanz" 
> <aaf-radio-1 at aafradio.org>
> To: "George Babits" <gbabits at custertel.net>; "milsurplus" 
> <milsurplus at mailman.qth.net>
> Sent: Friday, May 13, 2016 8:15 PM
> Subject: Re: [Milsurplus] TA-12 XMTR in Pairs?
>
>
>> What's the Bendix number on the control box, George?  The MT-34/TA-2 
>> also had 8 channels.
>>
>> 73,
>> Mike  KC4TOS
>>
>> On 5/13/2016 9:55 PM, George Babits wrote:
>>> I have a question concerning the use of the 4 channel Bendix TA-12 
>>> transmitters.  Amongst my plunder is a Bendix control box with 8 
>>> channels on it.  The frequencies listed for channels 1 through 4 
>>> correspond to the available frequencies of the TA-12 channels 1 
>>> through 4. Then, channels 5 through 8 correspond to frequencies 
>>> within the TA-12 frequency ranges of channels 1 through 4 also.  It 
>>> looks like this control box was designed to provide 8 channels using 
>>> a pair of TA-12 transmitters.
>>>
>>> But wait, there's more.  I  have a junction box with a cable/plug 
>>> that mates with the control box.  This junction box also has two 
>>> cables with connectors for the TA-12 transmitter and other 
>>> (receiver, power supplies, etc) equipment.
>>>
>>> Can anyone confirm that the TA-12 transmitters were configured in 
>>> pairs to provide 8 channels?
>>>
>>> Thanks,
>>> George
>>> W7HDL
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>
>
>

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