Hello Bill -
 
 > police and taxis use,  I mean I know theres a set allocation for each
 > frequency band but I'd be interetseted to know what was used where for
 > 2 way radio and broadcast radio in the 1930's 40's 50's 60's and 70's
 
Since replying to your message in the BCAST_RADIO echo I have been reading up 
some information in "The Marconi Book of Wireless" published in 1936. It 
seems that early police radio in the UK used 150 metres (2MHz). It was in 
Morse because it was less likely to be received by the general public and 
because of its superior reliability compared with telephony.
 
David
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