[Milsurplus] ?? Unknown Italian Receiver

[Hubert Miller]

Thanks, Tom. I was eager to look up this lead ( page 37 of the 70 page PDF
referred to ) but unfortunately,
that's not it. The unit i am puzzling over is a separate receiver of 6
valves. The RF-1 uses the same circa-1933
valves but is a 4-tube CW only, pack radio. One of those really interesting
things with the circular loop antenna.
A very rare set and probably the count still extant is only one or two.  If
you expand the circuit you'll see it's not
a superhet. There's a one-valve vfo transmitter and a 3-valve direct
conversion receiver. It kind of reminded me
of the U.S. SCR-131 / BC-148 set, however the U.S. set has a more powerful
transmitter and is operated on the
ground.	
The Italian use of the loop antenna is an interesting answer to the problem
of a grossly inefficient whip antenna
and counterpoise at these frequencies. At circa 2.5 MHz the maybe one meter
diameter loop wasn't very 
efficient either, but no doubt more efficient than a whip antenna and
required no drag wire. And it looks good,
too. 
The Italian tank radio transceivers have a pleasing orderly appearance but
also seem quite rare. I suppose because
souveniring was less practical in North Africa than on the European
continent, and i suppose after proving 
totally inadequate in North Africa, the Italian armor was not used in
Europe. 
-Hue 

-----Original Message-----
From: Tom B [mailto:tbryan at nova.org] 
Subject: Re: [Milsurplus] ?? Unknown Italian Receiver

Hello Hue,

I think it is an RF1.  The tube lineup looks correct.
see the article starting on page 37 here:
http://arsitalia.it/download/organo_ufficiale_a.r.s:/anno_2015/LA%20RADIO%20
11-2015.pdf

Tom
N3AJA

> I know this is not much to go on, but - does anyone know of an Italian 
> WW2 receiver which uses 6 valves and IF= 333 kHz ?
>
> The tubes are RSAF rf;  RRCF converter; 2x RSAF if amps;  R??2 audio ?
>