[Milsurplus] Re: mechanical modulator ... definitely not awobulator

[Hue Miller]

----- Original Message ----- 
From: "G. Lofstead" <jerrylofstead at bellsouth.net>
 Mike ET ALL,

>re: USE OF fm ON am SIGNAL .

It was a main stay for the submarine fleet during WW II.
AM Radio station WIOD in Miami FL, had such a scheme.  at 570KC, 
the carrier was FMed for RTTY contact to subs at sea.  It worked great 
and the enemy never detected it!

I have been in the "Secret Room" at the station many times. 
The RTTY eqpt is / was there the last time was there.

So FM on an AM signal does work and works well...

Jerry
W3CDE
________________________
Hmmm. I never heard about this before. I wonder how well WIOD covered
the Atlantic. I also wonder what would have happened even IF the enemy had 
detected RTTY signals for US submarines. I suspect the answer is "nothing".
-Hue K7HUE