Join the 396T yahoo group. There are hundreds of questions and answers on
there.
Sounds to me like you're trying to listen to an encrypted transmission, but
it could also
be a digital system that the radio won't decode ( like the Cleveland Ohio
digital system )

"Motorola has sold digital systems that use a different type of vocoder,
known as Vector Sum Excited Linear Prediction (VSELP). Cleveland, Ohio, and
Memphis, Tennessee, are two cities that use VSELP. These systems also use
the Motorola 3600 bps control channel but are not interoperable with the
digital voice features of APCO-25 radios."

You didn't say where or what you were trying to listen to so until you're
more specific
this is the best 'answer' I can give you.


"Me" wrote in message ...
I recently bought a Uniden ubcd396t scanner so I could try digital but
after many hours I still cant work out what I have to do to decode
digital, all I get is buzzing. Can someone please help?