--- In Repeater-Builder@yahoogroups.com, "Eric Lemmon" <[EMAIL PROTECTED]> wrote: > > David, > > It's not necessary to run the fan unless the radio gets hot.
I can't disagree with that. My personal preference is to simply start the fans with TX keying, and parallel the fan contacts with a 90F snap switch. (Yes, when it is hot in the room up there, the fans run all the time.) I like to reduce the thermal swings that the components are forced to go through. This is done by starting the fans early and not waiting for the heat sinks to rise to 120F then begin cooling. Laryn K8TVZ
