Perfect Joe, just what I have been looking for. tom
> [Original Message] > From: Joe <k1ike_m...@snet.net> > To: <Repeater-Builder@yahoogroups.com> > Date: 12/21/2008 10:05:17 PM > Subject: Re: [Repeater-Builder] Re: fan timer circuit > > This is a simple timer that I used on my 222 repeater. When the > repeater keys up the fans come on. After no PTT activity for about 2 > minutes, the fans go off. I found this the best way to cool with fans. > They have a delay time to remove any residual heat. They then turn off > to reduce the amount of dust and dirt that get circulated. > > 73, Joe, K1ike > > > Mike Dietrich wrote: > > Sounds like the best thing to do is a combination of both the PTT and > > Thermodisk versions together. > > That way the fan starts blowing when users start using the repeater. > > Then the thermodisk takes over after it heats up until all traffic > > quits and the tx'er cools down. > > Just my 2c worth. > > Merry Christmas everybody!!!!!!!!!!!!!!!!!!!!!! > > Mike > > > > > > > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > >
