[Vintage-Radio] Old police radio questions

Sun, 4 Apr 2004 19:52:26 -0700

Thank you, Don.  Interesting stuff.  Yes, LAPD was on 1730 kcs (and 2366
kcs for part of the city) until about 1965, when we moved up the 158/159
mHz base and 154/155 mHz mobile uplink freqs.   We were unique in
California for keeping the freeways in our "jurisdiction" rather than
the Highway Patrol doing them.  San Francisco may have done the same
thing, now that I think about it.  Had lots of "freeway motors" and a
number of real hot-rod "Freeway Interceptor" patrol cars.  CHP finally
took over the L.A. frwys about 1969.

The 1730 kc freq stayed on the license, but wasn't used for anything as
far as I can tell, until it was "discovered" and deleted in 1978...
http://members.cox.net/marnells/kgpl1931.htm  - second image down.
Meanwhile LAPD was beginning yet another migration, from VHF up to
506/507 mHz in the UHF-T band, where they now reside, but now use
digital modulation rather than analog.

Harry / N6URU

----- Original Message ----- 
From: "Donald Chester" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Sunday, April 04, 2004 10:32
Subject: RE: [Vintage-Radio] Old police radio questions

> I find most interesting the old police band that used to lie between
the AM
> broadcast band and 160m. ham band.
>
> I can remember about 1960 on winter nights I could still hear police
> communication just above  the AM broadcast band.  I recall many
references
> to the "Santa Ana Freeway".  I believe soon afterwards all the m.f.
police
> communication was moved to VHF.