Yep. Traditionally, a simplex channel is one that can ONLY receive or transmit but not both, as in a telemetry beacon or a broadcast radio or TV station. Half-duplex refers to a channel where both reception and transmission can take place but only one at a time. Your operation of an FM repeater, for example, is half-duplex although the repeater is actually operating full-duplex on two frequencies. Full-duplex refers to a system that receives and transmits simultaneously. A wired telephone and cellphone come into this catagory as does nost peoples use of a lineat satellite transponder.
On 08-Jun-11 03:33, Justin Pinnix wrote: > Guess I learned the ITU version :-) > > http://en.wikipedia.org/wiki/Simplex_communication > > On Tuesday, June 7, 2011, Nigel Gunn G8IFF/W8IFF<[email protected]> wrote: >> That's half duplex, not simplex. >> >> On 07-Jun-11 14:55, Justin Pinnix wrote: >> >> A packet satellite can also be operated simplex (TX and RX on the same >> frequency). >> >> > -- Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937 825 5032 Amateur Radio G8IFF W8IFF (was KC8NHF 9H3GN), e-mail [email protected] www http://www.ngunn.net Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club International #385, Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC, GCARES, XWARN, EAA382. _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
