Thanks for the reply. Do you have a good source for that part?
Also, could I wire two of them in parallel, one on the radio heat sink and one on the power supply sink? Thanks, Ben --- In Repeater-Builder@yahoogroups.com, "Eric Lemmon" <[EMAIL PROTECTED]> wrote: > > Ben, > > I believe that the best solution is to use a normally-open thermoswitch > mounted to one of the heatsink fins. My choice is Digi-Key 317- 1094-ND, > about $7, which closes at 50 degrees Celsius (122 degrees Fahrenheit). This > setting ensures that the fan does not run needlessly, but will kick in long > before the radio gets hot enough to affect its health. I drilled and tapped > a couple of 4-40 holes, and mounted the switch with some heat-sink compound > under it to get good heat transfer. > > 73, Eric Lemmon WB6FLY > > > -----Original Message----- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] On Behalf Of wqjf348 > Sent: Saturday, October 11, 2008 11:39 PM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] GR500 Cooling Fan Control > > I am setting up a GR500 with the R1225 radio. It is in the wall mount > box. The cooling fan that came with the box runs non-stop. > > I would like to be able to control the fan either by slowing it down > or making it switched by temperature or PTT of the repeater. > > Can anyone here offer some suggestions? It is currently wired > straight from the power supply. > > Thanks in advance! > > Ben > WQJF348 > West Jordan, Utah >
