[Milsurplus] ARR-31 Hallicrafters military receiver info.

[antqradio at juno.com]

Tag says:

R-332/ARR-31
NOa(s)-12029
428:CPL

On the front panel:
RF input connector (unmarked)
Panoramic connector
Video connector
two phones jacks
AFC on/off switch
Audio pot
Band switch for bands 1 & 2
Tuning knob
6 pin power connector

The frequency display window has the numbers 1 through 16 with small
clear circles above each number.  So I have no idea what the frequency
range is but it appears to be VHF.  All of the RF, Oscillator and IF
tubes are 7 pin miniatures.  I assume it was originally powered by 400
cycle but this has been converted to 60 cycle.  Looks like an on/off
switch has been added.  Strange that there are no markings for the
original power switch.  Oversight?

Regards,
Jim

On Tue, 4 Oct 2005 23:22:40 -0400 (EDT) William Donzelli <aw288 at osfn.org>
writes:
> > Anyone know anything about this radio?  Looks like late WW2, about 
> the
> > same size as the ARR-7.
> 
> It is a sonobouy receiver. I am not sure why it was made, as the 
> /ARR-26
> did the job just fine.
> 
> Is this a developmental model? What does the nomenclature tag say?
> 
> William Donzelli
> aw288 at osfn.org
> 
> 
>