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Old 02-25-2015, 02:56 PM
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RandyT0001 RandyT0001 is offline
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.45,
These will help understand pre-digital radio recievers and transmitters of the 1930's until 1990's

http://en.wikipedia.org/wiki/Superheterodyne

http://en.wikipedia.org/wiki/Superhe...ne_transmitter

http://en.wikipedia.org/wiki/Vacuum_tube
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