That really depends on what it is you want to stream. Is it analog, digital, trunked, conventional? This will determine which scanner would be needed.
Go to your local database and determine what is available and what is already being streamed.
I have found that base type scanners like the BCT15X
and the BCD996XT
which have record out jacks work the best. The audio level management is easier. I use the BCT15X for my feed
, which is analog. The 996XT is digital if you would need that.