[R-1051] 100 CPS Synthesizer in R-1051b

[Nick England]

Late 1950's or early 1960's design - lots more germanium than silicon
in those days.

Highly unlikely EMP had anything to do with it - The 1051 had tubes in
the first RF stages IIRC for protection from overload by nearby
transmitters - things are crowded shipboard.

cheers,
Nick K4NYW
www.navy-radio.com

On Fri, Mar 9, 2012 at 9:49 AM, Steve Hobensack
<stevehobensack at hotmail.com> wrote:
>
> Many thanks to those that replied to help with the module. The trouble was with the amplifying transistor Q7 2n1225. I was able to replace it with a silicon PNP (same TO5 package) and now all is good. I don't know why the these receivers were nearly 100 percent germanium. Does the lower gate voltage provide better resistance to EMP?
> Steve N8YE
>
>