[ARC5] RE-94A/AIC-10

[Scott Johnson]

Robert-
The AIC-10 components were either tube, or later, with a TCTO, all
transistor.  The AM-476 and maybe the A version were tube, and the
subsequent B and C versions were transistorized (the B had 4 plug in
germaniums, and the C had  potted silicon transistor (later IC) circuitry.
This also goes for the cabin speaker, which originally had a booster amp
with 4 sub mini tubes in PP parallel, later had two 2N158s, and even later,
a sealed module.  When the TCTO was accomplished(in the late fifties,
through the early sixties, depending on MDS), the Dynamotor was removed, so
you couldn't have a hybrid system.

The AIC-10 is still flying in the B-52H, The KC-135 had it until Pacer Crag,
then it got a whizzy new digital intercom.

Regards,

Scott W7SVJ

-----Original Message-----
From: ARC5 [mailto:arc5-bounces at mailman.qth.net] On Behalf Of WA5CAB--- via
ARC5
Sent: Saturday, June 20, 2015 8:49 PM
To: arc5 at mailman.qth.net
Subject: Re: [ARC5] RE-94A/AIC-10

For the record, there is no such thing as "black crinkle finish".  The
proper name is black wrinkle.

RE-94A/AIC-10 is part of Intercommunication Set AN/AIC-10.  It is used with
Control Panel C-824/AIC-10 to provide "hot mic" capability on the interphone
system, mostly in two-place aircraft.  

RE-94(*) contains one each plug-in AM-476/AIC-10 which contains 4 sub-min
tubes and two barometric switches.  Probably you only got the RE-94
schematic.  Supply voltages required are 27.5 VDC and 170 VDC.

Manuals for AN/AIC-10 are TM 11-5831-200-12 (formerly T.O. 12R2-2AIC10-1)
and TM 11-5831-200-35 (formerly AN 16-30AIC10-2).

AN/AIC-10 dates from about 1953.  It is hybrid, containing some tubes and
some discrete transistors.

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 06/20/2015 19:51:21 PM Central Daylight Time,
releazer at earthlink.net writes: 
> I bought something called an RE-94A/AIC-10 from Fair Radio.  It is a 
> nice little black crinkle finish box with some relays and an audio 
> amplifier module in it.  I was hoping to use it in conjunction with 
> the ARC-114 and
> ARC-116 I have, since I assume they were designed to be used in 
> connection with an aircraft intercom system.
> 
> The piece came with a schematic that I can't see is applicable. Anyone 
> know anything about this gear?
> 
> Thanks,
> 
> Wayne
> WB5WSV
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