[BC] FM-squared and FM-Cubed...

[Burt I. Weiner]

FM-Squared was a fancy name given to a FM subcarrier on a FM 
signal.  This name came about  when various programs were carried on 
(satellite) baseband signals as subcarriers.  It was basically FM on 
FM or FM-Squared.  FM-Cubed was the same thing but a subcarrier on a 
subcaarier of a subcarrier.  I used to essentially do the same thing 
as FM-Squared when I had a 6.8 MHz subcarrier on a 5910 MHz video 
microwave link and I put a 185 kHz subcarrier on the 6.8 MHz 
subcarrier for a Moseley remote control.

Burt

At 10:01 PM 3/24/2007, you wrote:
>Subject: [BC] FM Cubed - fascinating!
>To: broadcast at radiolists.net
>Message-ID: <ca3.b6a69d3.3336fe06 at aol.com>
>Content-Type: text/plain; charset="US-ASCII"
>
>In a message dated 03/24/2007 5:55:01 PM Eastern Daylight Time,
>tom at bosscher.org writes:
>
> >     I thinking of calling this FM cubed, for the three FM signals you
> >  could have. And I'm also looking for investors, or a buyout!
>
>You could, of course, do almost the same thing with the FMeXtra system. :)
>
>Your idea sounds very interesting, tho... and you wouldn't need the special
>radios to pick up the signals! The question, as you raised, is whether or not
>anyone else will be able to get the signal due to the "proximity" of the much
>stronger "main station" right next to it.
>
>Robert also raises a very interesting point... that 1 watt signal would
>technically "meet the mask". You *might* just be able to try it, at least
>experimentally, and see if it would even be worth pursuing in the 
>first place. The
>trick is going to be mixing it into the existing signal. Will you do 
>it at the
>exciter stage? Will the main TX handle it OK?
>
>This is quite fascinating. :)
>
>Willie...

Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California  U.S.A.
biwa at earthlink.net
K6OQK