[MRCA] Latest acquisition AN/ARR-2

[Jack Antonio]

These receivers do power up. But without the original signal sources
all you can hear is a slight increase in noise output from a signal
generator.

A TS-24/ARR-2 test set will provide the proper modulated
signals. As I understand it, this was used as a go/no go tester before
launch. It does not provide the Morse keying, but it does
demonstrate the operation of the set. The TS-24 is battery powered.
so you will be buying a bunch of 9V batteries.

The TS-24  outputs a signal on UHF mil aero freqs, so I don't
recommend using the antenna on it, just use a short length of
coax to connect to the receiver. I put a resistive pad inside my
TS-24, but one could use attenuators in the coax line.

Jack Antonio
WA7DIA


On 4/17/2023 5:01 PM, Mike Morrow wrote:
> The receiver is either R-4 or R-4A/ARR-2 with DY-2A/ARR-2 dynamotor, 
> mounted in MT-7 or MT-7A/ARR-2 rack on MT-5/ARR-2 mounting base.  
> MX-2/ARR-2 power and audio shorting plug is required on the MT-7, which 
> has no audio bus select switch.  If MT-7A (with audio bus select switch) 
> is used, then MX-2 should have its connection between pin 2 and 8 lifted.
> 
> Audio output should be to J-16 orJ-22/ARC-5, mounted on MT-78/ARC-5.  
> Control box C-2/ARR-2 mounts on MT-4/ARR-2 and connects to the receiver 
> with MC-215 type spline.
> 
> The antenna is AT-5/ARR-1.
> 
> Mike / KK5F
> 
> -----Original Message-----
> From: Doran Platt <jeepp at comcast.net>
> Sent: Apr 17, 2023 1:24 PM
> To: MARK DORNEY via MRCA <mrca at mailman.qth.net>
> Subject: Re: [MRCA] Latest acquisition
> 
> My first ever surplus acquisition was an R4/ARR-2, bought in 1959 from 
> Fair Radio.  What ever happened to it?  No clue....
> Jeep K3hvg
> 
>     On 04/17/2023 1:41 PM MARK DORNEY via MRCA <mrca at mailman.qth.net
>     <mailto:mrca at mailman.qth.net>> wrote:
>     R-2/ARR-2 with dynamotor, mounted in a single ARC-5 rack, mounted on
>     an MT-2/ARR-2 shock mount. Control box is a C-2/ARR-2 mounted on an
>     MT-4/ARR-2 control box mount.
>     Mark D.
>     WW2RDO
> 
> 
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