[Milsurplus] Military Receiver R105A/ ARR 15 question

[Al Klase]

Hi Greg,

Nobody else spoke up, so I'll see what I can do.

This receiver uses the Collins Autotune system to accommodate 10 preset 
channels.  With the wing nuts on the tuning and bandswitch knobs 
loosened, it can be tuned manually.  In this mode there is no detente on 
the band switch, so the half-way-in-between condition in the picture is 
probably OK.

The small window on the upper left is the "BFO-Calibrate" indicator.  
The knob below tunes the entire IF and the BFO +/- 50KC form the 500KC 
IF.  When this control is turned away from it's center detente, the 
antenna is disconnected and a 100KC calibrator is turned on.  If for 
instance if you want to tune the set accurately to 3520 KC, you set the 
BFO-Calibrate control to +20 and zerobeat using the main tuning control 
in the vicinity of 3500 KC.  Then when  BFO-calibrate is returned to 
zero, the set is on the air at 3520.

I have one of these in storage.  It strikes me as more of a curiosity 
for the Collins collector who wants one of everything, and you might be 
happier with an BC-348 for everyday use.  Of course it will coordinate 
with the autotune in the ART-13 and it's kinda cool to watch it click 
and whir it's way to the next frequency.

73,
Al
,

On 4/30/2010 10:12 PM, Greg Mijal wrote:
> Hi:
>
> I've been looking at an ARR 15 receiver listed on Ebay.  I'm thinking about mating it to my ART 13 for 75 M phone.
> Ebay auction number is: 230 467 619 002
>
> I'm not very familiar with this model and would like someone who has experience with it take a look and answer a couple of questions.
> The right side widow looks like it is between bands.  Could this be normal or is something mechanically lacking?
> Also, what is the purpose of the small left side window?
> Thanks for your help
> Greg
> WA7LYO
> Kinston NC
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-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/