[BC] Noise Free Radio

[Cowboy]

On Saturday 06 October 2007 02:11 pm, Harold Hallikainen wrote:

>  >  At the receiver, multiply the AM carrier up by some large
>  >  factor, such that the deviation was now about 75 khz, then mix
>  >  that to produce an IF of 10.7 Mhz, and feed it into the normal
>  >  FM if strip.
>  >  Receiving, not so easy.

>  I don't think the multiplying and hetrodyning gets you and andvantage over
>  just doing FM demodulation at carrier or some IF.

 The advantage was only that the existing FM demodulator would be used.

>  I recall a station in Florida got an experimental authorization for the
>  proposed narrow band FM. I never saw the report, though.

 Odd. I never saw that report, either !
 ;-)

-- 
Cowboy