@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Bob M.
Sent: Saturday, December 20, 2008 2:31 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] fan timer circuit
I would think that the person who designed it, and submitted it for posting
on r-b, built and tested
The thermal switches sold for attic fans should work great. I bought one rated
at 119ºF at a surplus store.
My S-COM controllers all had start-of-activity and end-of-activity macro
triggers, which would be a more elegant way to do the timer-based function than
a separate board with a 555 IC.
At 12/21/2008 14:15, you wrote:
Personal opinion, but I'd never put up a repeater that relied on a fan to
keep temps within spec.
Yes, fans are not as reliable as 100% passive cooling. Unfortunately, the
latter method requires a lot more rack real estate which sometimes ( in my
case, always)
I would think that the person who designed it, and submitted it for posting on
r-b, built and tested it.
Did you have a problem with it? Do you think there's an error in the diagram?
If so, it should be fixed. Please provide more info.
Bob M.
==
--- On Sat, 12/20/08, Michael Ryan
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