[Hallicrafters] S27 vs S27D etc. and S36 differences.

[Todd, KA1KAQ]

That's a little misleading, Greg. The S-27 used the same acorn tubes
in its front end as well. The primary difference between it and the 36
was the addition of the radiation suppressor stage, and a slight shift
in band coverage.

~ Todd,  KA1KAQ/4

On Sat, Jul 31, 2010 at 8:42 AM,  <wa1kbq at aol.com> wrote:
>
> S-27: 27MC to 145MC in three bands; 5250KC IF
>
> S-27B: 36MC to 165MC in three bands; 5250KC IF
>
> S-36: 27.8MC to 143 MC in three bands; 5250KC IF; 954, 955, 956 accorn tubes in front end
>
> S-36A: 27.8MC to 143 MC in three bands; 5250KC IF; 954, 955, 956 accorn tubes in front end
>
> S-37: 130MC to 210MC in one band; 18MC IF; 954, 954, 954, 955 accorn tubes in front end
>
> The S-37's 18MC IF frequency is interesting and it has no bandswitch featuring one continuous tuning range from 130MC to 210MC.