parnass@ihu1h.UUCP (Bob Parnass, AJ9S) (02/20/85)
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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."
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Bob Parnass, Bell Telephone Laboratories - ihnp4!ihu1h!parnass - (312)979-5414