Tuesday, April 25, 2017

Working Full Duplex


Gary Pierce of Hamradionow.tv published a nice show
on Amateur Satellites. From his youtube link:


The bulk of this episode is an on-location interview with two Raleigh NC area hams who gave a couple of live demonstrations of operating through satellites at the Raleigh Hamfest in April 2017. ...

One aspect of the demo that I really appreciated was the use of two radios to allow full-duplex operation. At 28:03 you will notice Tucker W4FS get "interrupted" by another ham while he is speaking. He quickly hears the other ham and is able to stop talking briefly to allow them both to sync up their conversation. While half-duplex "can work", it is imperative to be able to listen to others while you work on a satellite to allow for smoother QSO's, without stepping on others. This is especially true on the FM, single channel, satellites: SO-50 and AO-85