''A cryptic sentence (''We have seen Mary Baker Eddy with one eye'') was inserted into a commercial short-wave broadcast to inform British Royal Radar Establishment of the invention of the T/R (Transmit/Receive) switch allowing a single radar antenna to be used for both transmitting and receiving (having seen the Christian Science building with just one antenna).''
Five years at the Radiation Laboratory (1946,M.I.T.)
https://archive.org/details/fiveyearsatradia00mass
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