HG>     I'm not sure I understand. I thought the cell phones
HG> used two freqs simultainiously to trans to the tower and
HG> receive from the tower called a channel which is assigned by
HG> the tower(system). Thus a stationary cell phone user could
HG> be monitored by a scanner if it jumped back and forth
HG> between the t/r freqs of that channel.  Do I have this all
HG> wrong?  If you listen to the cell and receive either the t
HG> or r side of the conversation I would think you'd get
HG> feedback unless the cell phone t didn't contain the
HG> conmposite signal. Is that how they do it?
The base signal (the higher frequency, between 869 and 894 mhz) will have 
BOTH sides of the connversation when the cellphone is talking to a normal 
(landline) phone, so there WON'T be any need to monitor 2 freqs.
... I drank WHAT!? - Socrates
--- ProBoard v2.15 [Reg]
---------------