[HBR] BC-453 I.F. Xfmrs?

[Walt Hutchens]

Woody wonders:
> Greetings All--Is the BC-453 the only one of the ARC-series receivers
> that has the 100kHz i.f. transformers usable in an HBR?
> Alternatively, do the xfmrs from the -453 have unique markings?I saw
> an item on tha "unnameable place" that offered surplus i.f.
> transformers up for bid. The seller doesn't seem to know which
> specific set(s) they came from, but the pix show the following
> markings on the cans: V-5374, V-5375, V-5367, V-3426 and V-3426.

I found the item.  These are clearly not 'command set' IFTs -- the 85 
kcs BC-453 and R-23/ARC-5 transformers you're thinking of are taller, 
have a screw on cap on top, and a plug-in base, rather than solder 
terminals.

Also, the xfmrs in that 'unnameable place' are pretty clearly dual 
frequency units.  Except for the solder terminals my first guess would 
be that they're intended for an AM/FM commercial receiver -- something 
like 455kcs and 4.3 mcs in one can.  It looks like both sets of windings 
are brought out to the base, rather than being connected in series as 
was the practice in many AM/FM sets.

Yet another possibility is that they're not IFTs at all, but antenna 
and/or mixer coils for a four-band receiver.  I notice that there are 
four kinds of coil in there -- three pi wound and one solenoid wound. 
That is, there are two basic designs, each with two pairs of tuned circuits.

The construction is high quality 1940's commercial rather than military. 
  Darned if I know what they're from but that whole area is something of 
a mystery to me.

Walt Hutchens
KJ4KV