In article ,
Paul Keinanen wrote:

According to the "Spycatcher" book, MI5 used local oscillator leakage
to track down spies already in the 1950's. Thus, if standard IF is
used, at least shield the oscillator very well and use some RF stages
to isolate the antenna from the local oscillator.

The police in some countries use the local oscillator radiation to
detect illegal speed trap radar detectors.

And, some speeders turn the tables, by monitoring for the LO radiation
from police-band radios... assuming that where there's Smokey, there's
radar-fire.

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
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