Charles Hunter writes in a message to Steve Brack
 CH> The automation in the system consisted of the unit scanning 
 CH> for available IMTS frequencies to make a call; and with the 
 CH> base stations sending out a call by scanning channels to find 
 CH> one your unit was on
Actually - the base transmitted an "idle tone" on a free channel.  The 
remotes all looked for this tone and locked on to this channel if they were 
not in the midst of a call.  The base would connect to the next remote on 
this channel and the idle tone would shift to another channel.  One of the 
big features of the Bearcat 210XL scanner was a filter to cause it to skip 
over this channel with an idle tone on it.  (So much for *not* listening to 
phone channels!  )
  
 CH> The transmitter packs, as I remember transmitted at 25 or 50 
 CH> watts of power. 
  
Actually, you lost so much power in the small diplexers in the radios 
(combined transmitter and receiver into one antenna) that a 50 W radio 
usually hit the antenna at 25 Watts.  
 
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