The radios in the pictures and Ricochet were originally made by the same company, Metricom.  This company was started by Southern California Edison.  Metricon made both radio systems, that were the Ricochet and the Utilinet radios systems.  They sold off the utilinet radios and that radio system has been sold several times, now made by a company called Cellnet.  Metricom company kept the Ricochet system and installed the system in several cities around the US.  Than Metricom went bankrupt and the Ricochet system was sold to a company in Denver, but they never had much luck selling the systems to end users (only 19.2Kbs)....
Utilinet radios are used all over the place.  The odd thing about the pictured radio is that it is an old metricom radio that hasn't been manufactured for about 12 years..... 
 
 
 








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