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From: parnass@ihu1h.UUCP (Bob Parnass, AJ9S)
Newsgroups: net.ham-radio
Subject: British Radio Pirates QRM Navigational Aids
Message-ID: <485@ihu1h.UUCP>
Date: Wed, 20-Feb-85 11:13:45 EST
Article-I.D.: ihu1h.485
Posted: Wed Feb 20 11:13:45 1985
Date-Received: Fri, 22-Feb-85 20:04:45 EST
Distribution: net
Organization: AT&T Bell Laboratories
Lines: 26

x
From the British publication WIRELESS WORLD, February 1985:


	     Pirate Navigation Interference Overcome


     "Helicopter pilots	flying to the  North  Sea  oil	rigs
     have found	it increasingly	difficult to use their navi-
     gational aids to locate the rigs.	This  is  caused  by
     pirate  radio  stations operating at frequencies in the
     medium  waveband  used  by	  standard   non-directional
     beacons.	Racal Avionics have [sic] solved the problem
     by	designing (within a  month)  a	new  non-directional
     beacon with a much	increased frequency range...."

     "...The transmitters are used as landing site  locators
     or	 as  route  markers  and the new design...  allow[s]
     adjustable, reduced power outputs to be used from	100W
     stepping  down  to	 20W.	Because	of the reduced power
     consumption, the beacon can be operated by	 solar,	 gas
     or	wind generators	at remote locations."

-- 
===============================================================================
Bob Parnass,  Bell Telephone Laboratories - ihnp4!ihu1h!parnass - (312)979-5414