[Milsurplus] BROFICON?

[Jack Antonio]

Hi all

On a professional mailing list I'm on, the subject
of sending data over AM radio stations by very narrow
shift FSK of the carrier came up, and one such use
was something called BROFICON, which supposedly
stood for Broadcast Fighter Control.

Apparently, AM stations could relay slow speed
teletype using very narrow shift FSK of their carrier,
and could relay messages up and down the chain, one AM
station monitoring another.

I have heard of usages of FSK of AM carriers for
things like power company load control and the like,
but this was the first I've heard of an actual message
relay system.

Anyone ever hear of this?


Jack

Jack Antonio WA7DIA
scr287 at sbcglobal.net