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/W8IFFnigel@ngunn.net 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).