At 05:04 AM 12/25/03 +, you wrote:
I need a simple circuit for a repeater PA fan controller with delay
time out.
See below
I did a search, but found nothing.
That's funny. I put the three words
repeater fan control into Google
and got over 16,000 hits. The first 30 or
so were
David,
Nothing is simpler than a thermal switch. I bought a #317-1094-ND
thermoswitch from Digi-Key that closes at 50 degrees C (122 degrees F)
that fills the bill perfectly, for just $9. I drilled and tapped two
holes on one of the radio's heat sink fins, and mounted the switch with
a dab of
At 04:04 AM 12/25/03, you wrote:
Also, don't forget simply using a controller that directly supports
fans: http://www.ah6le.net/arcom/index.html . Simple doesn't
necessarily mean cheap. To some people, plug-n-play is the most simple
form. Not that these controllers are plug-n-play, but a relay
Hello ...
The following is a list of the manuals for the VHF units:
Availability is another thing. Whether I have a copy or not is
still another thing - will know more when I go look ... it is 5am
here and is probably 35 degrees in the library right now.
I looked - the only
Aiprax (http:www.airpaxtsp.com/tspsite/6700.html) is a very nice thermo
switch. Web site explains all about it. Been using them for years. The size of
a
T0-220 case, handles 1 amp although I prefer driving a fan relay then I can
switch anything. Operating temps start out at 40 deg C and
Just to let every one know there is a new radio group
[EMAIL PROTECTED]
These radios are great fully duplex radios .. and run at 100% duty
cycle with no modes.
Hope to see some more people there
Rick Szajkowski VA3 RZS
Charlotte Darby VA3 CMR
Node Owners of IRLP Node 2120
Lakefield Ont
If you are in the mood to spice it up a bit, Maxim has some really neat fan
controller IC's. Here is a link to one of many, this one is a stand-alone
and easy to interface.
http://pdfserv.maxim-ic.com/en/ad/MAX6665-AD.pdf
Bryon K0BSJ
At 08:03 AM 12/25/2003 -0800, you wrote:
At 04:04 AM
I use this one: http://repeater.w4zt.com/circuits/fanptt.html
Modify it as you see fit.
I also put a White-Rodgers fixed setting temperature switch (3F01-111 which
closes at 110F and opens at 90F), available from Grainger
http://grainger.com, in parallel with the relay and in contact with the
I think it was known as the M20 conversion.
Neil
Robert Purvis VE3INY wrote:
I have a Cushman CE3 service monitor. Its great for 2 meter and 6
meter use, but doesn't cover 430 to 450 mhz.
At one time Cushman had an add-on that allowed coverage of 430 to 450.
If anyone has
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