At 11/8/2007 18:12, you wrote: >OK, here is where it really gets fuzzy for me: > >ยง97.213 Telecommand of an amateur station. >....... >(b) Provisions are incorporated to limit transmission by the station >to a period of no more than 3 minutes in the event of malfunction in >the control link. > >Does that mean that the link must be active at all times?
Yes, at least once every 3 minutes. If input from the control station is not present for more than 3 minutes, the remotely controlled station is supposed to shut down. This is known as a "heartbeat timer". Bob NO6B
