[ARC5] 80 kHz IFs

[MICHAEL BITTNER]

I can't remember which specific receivers used 40 kHz IFs.  I have several new-in-original-box examples of the untuned VLF IFs that were probably part of 1920s vintage superhet kits or were sold individually to hombrewers.  The old-time magazines and catalogs might have some answers. 

Forgot to mention the ARR-2 homing receiver, that fits in a standard ARC-5 rack, has a 200 kHz IF.
Mike, W6MAB




> On February 2, 2021 at 6:11 PM Glenn Little WB4UIV <glennmaillist at bellsouth.net> wrote:
> 
> 
> What receiver used a 40Kc IF?
> I have some tunable 40 Kc transformers made by RCA.
> 
> Any ideas?
> 
> 73
> Glenn
> WB4UIV
> 
> On 2/2/2021 2:45 PM, MICHAEL BITTNER wrote:
> > Many 1930s BC Receivers 175 kHz IFs
> > 
> > Most Automobile BC Rcvrs 262 or 262.5 kHz IFs
> > 
> > ALL-STAR SWL Receivers  370 kHz IF
> > 
> > BC-1206 LF Receiver    135 kHz IF
> > 
> > QST HBR HF Receivers  100 kHz IFs although some used surplus 85 kHz IF 
> > transformers instead.
> > 
> > Hammarlund HQ-180A     60 kHz IF
> > 
> > Early 1920s BC Receivers 30-40 kHz IFs  The IF transformers were untuned 
> > and looked like audio transformers.
> > 
> > My 2-cents worth.  Mike W6MAB