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Tracking the Lincolnshire Poacher
"2005 Radio 4 documentary on the mysterious number stations that send their
cryptic covert messages to 'agents in the field' on the outer limits of the short-wave band.
The BBC stopped "live" broadcasts of the bells of Big Ben during WWII, because German
analysts could actually deduce a lot about weather conditions in London, by examining
differences in the acoustic characteristics of the bells' sounds from day to day.
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"2005 Radio 4 documentary on the mysterious number stations that send their
cryptic covert messages to 'agents in the field' on the outer limits of the short-wave band.
The BBC stopped "live" broadcasts of the bells of Big Ben during WWII, because German
analysts could actually deduce a lot about weather conditions in London, by examining
differences in the acoustic characteristics of the bells' sounds from day to day.
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