Andy Kunz writes:
>What is an "RDS Decoder" in the first place?

        RDS stands for Radio Data Service and uses one of the SCA frequencies
to send a stream of digital data which do such things as send the station's
call letters and a description of format as well as other short messages
like advertising or song titles.  The plans are also to send selective calling
codes so that commuters on the North side of town, for example, will only
hear traffic reports which deal with the North side, etc.  It is supposed
to be possible for RDS-equipped radios to scan the dial in a strange town
and find a station with a particular kind of music that you like even though
you've never been in this town before.

        I just thought it would be interesting to know the SCA frequency
used and the data format.  The frequency is probably either 67 or 92 KHZ,
but the data could be anything as long as it didn't cause too many sidebands.

        RDS is not a subscription service like most SCA operations so we
aren't doing anything a little shady, here.

        For those not familiar with United States government speak,
SCA stands for Subsidiary Carrier Authorization.

Martin McCormick