duplexern.
/ˈdjuːplɛksə/ A device by means of which signals are alternately transmitted from and received by a single radar or radio aerial.
ΚΠ
1952 J. F. Reintjes & G. J. Coate Princ. Radar (ed. 3) i. 10 The use of a single antenna for both transmission and reception in nearly all radar sets is made possible by a transmit-receive device..also called a duplexer and a receiver-protective device.
1954 H. C. Minnett in E. G. Bowen Textbk. Radar (ed. 2) ix. 294 An aerial duplexer or TR/RT switch is an electronically operated switching device, which enables the same aerial to be used for both transmitting and receiving in pulsed radar equipments.
1962 Engineering 5 Oct. 434 Discussions on valves..will cover..magnetrons, modulators, duplexers.
This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2018).
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n.1952