At 11/9/2007 13:12, you wrote: >I know of very few who do this. > >Joe M.
I don't know of anyone that does this. Yet it is in the rules. I think the legal "out" here is that automatic control relieves the need for remote control, with only the latter requiring the heartbeat timer. Bob NO6B ><mailto:no6b%40no6b.com>[EMAIL PROTECTED] wrote: > > > > 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

