[BC] Re: FM Modulators for Satellite Radio

[Robert Meuser]

only if the channel has no other signals. If one is listening to a 
station it is probably in at least the 50 dbu contour. A modulator 
would have to be about 74 dbu to completely take over such a signal. 
If compliant, that means it would be no further than 9 inches from 
the receiver taken over.  If the receiver had an excellent capture 
ratio, it might possibly be capture at possibly 2 feet but no more. 
Most people just don't drive around listening to empty channels.

R

Dana Puopolo wrote:
>Besides, the average car FM receiver has under one microvolt sensitivity, and
>a capture ratio of under 2 db.  What does this mean? That they can easily pick
>up a 100% compliant part 15 modulator (250 microvolts signal at ten feet) 100
>(or more) feet away!
>Remember, the compliant modulator will STILL produce a 15 microvolt signal at
>100 feet from the unit....
>-D