I think it's an interpretation of how you define failure of the control link. You could use an active low COS and if the repeater controller sees three minutes of continuous low, it assumes the control has failed.
But, that is a discussion for another day - or another list. But, you brought up the original question - DOES the automatic control relieve the need for any other control? Joe M. [EMAIL PROTECTED] wrote: > > 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 > > > Yahoo! Groups Links > > >
