[Hallicrafters] Which models had the 50KC I F?

[Ronald Oberloh]

The Drake 1A,2A,2B,2C,R4,R4A,and R4B all used the 50 kHz IF.

Ron  WA0KDS

Bruce Muscolino wrote:

> The model I am familiar with is the S-78.  There were others.
>
> A 50 kHz IF is better than a 455 kHz IF because it gives a sharper
> response without resorting to crystal filters.  IF selectivity's on the
> order of 500 hZ can be had with just the LC IF circuits.
>
> 73
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