Re: CCU to install RDS in 192 FM stations

[Garrett Wollman <wollman@khavrinen.lcs.mit.edu>]

<<On Mon, 27 Oct 2003 15:02:29 -0500, Aaron Read <aread@speakeasy.net> said:

> On top of that, how does the radio decide that one station is too weak and 
> a new one must be tuned to?

The same way it decides when the blend circuit should be engaged: by
examining the gain of the front-end AGC circuit.  High gain means weak
signal means try to find another one.

The best RDS radios (of the sort that you might find in German luxury
cars made for the German domestic market) have true diversity, and the
second receiver is always scanning looking for a better signal with
the same PI (or else looking for a signal with TI).

-GAWollman