[ARC5] INFO Wanted: R22 receiver BCB NAV

[Kenneth G. Gordon]

On 27 Sep 2020 at 23:44, Bill Cotter wrote:

> Hello Everyone,
> 
> I am trying to locate information on an unusual ARC5 BCB 
> (.55-1.5mHz) Navigation Receiver. According to a info source this 
> model superceded the R10/ARC-5. It is unique to the traditional 
> ARC-5 series that is part of the SCR-274 in the following manner:
> 
>       Front Panel: Power connector, LOOP BNC, ANT BNC, TEL Jack
>       Rear Panel: No power connector
>       Tube Lineup loctals: 14A7, 14S7, 14A7, 14F7, 14R7, octal: 12A6
>       Below chassis: Plastic wiring, 5% resistors, 239kHz IF
> 
> Picture attached
> 
> If you happen to have any info (TM, manual, schematic, alignment, 
> etc), I would appreciate a copy by PDF or print.
> 
> THANKS - Bill N4LG 

Bill:

That is part of the later ARC Type 12 series equipment, and was NEVER part of the 
SCR-274N series nor of the Navy AN/ARC-5 series.

I believe I have at least a schematic of that receiver and I think I also own one of those 
receivers.

The power for that receiver was attached to the front. Is your front-panel still complete? Do 
you have a photo of the front? Ordinarily, there should be a big "snout" in the center of the 
front panel for power connections.

Also, those receivers never had a BFO either, but instead had a noise-limiter, nor did they 
have a dial.

Hang on for a day or two and I will eventually find the schematic.

Ken W7EKB