[R-390] Off-topic IF question

[Bill Smith]

In a word, yes.  The 455 KHz as a standard (one I grew up with) is "recent".

Probably a variant among manufacturers, or style, or preferences, but
receiver manufactures have used a wide range of IF frequencies.  445, 455,
465, 485 among others, seem to be related to the use of crystal filters. (Is
this true?)   Early supers used frequencies as low as 185 KHz.

73 de Bill, AB6MT
billsmith@ipswest.com



----- Original Message -----
From: "Scott, Barry (Clyde B)" <cbscott@ingr.com>

>
> Were there common IFs on 465kc?  It seems odd to be so close to the
defacto standard, but not quite there.
>
> Thanks,
>
> Barry - N4BUQ