Difference between revisions of "Keyer (U.S.A.)"
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Latest revision as of 00:18, 25 February 2009
4-2-435
A device which changes the output of a transmitter from one value of amplitude or frequency to another in accordance with the intelligence to be transmitted.
Reference: I.R.E.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)