Ben, My response also. There are many list members who continue to give their countless expertise & time to this forum. Most of the "regular" contributors are persons in the RF industry who are called "experts".
Do you know how an expert is defined? They have made all of this mistakes . . . . or most of them. I've never seen a post by him that wasn't correct for the initial issue that was raised. And I've used those thermal switches on my system. Trust me, they work great. Not one failure since they have been installed over 10 years ago. Just my $0.02 opinion. Don, KD9PT ----- Original Message ----- From: "lenaw12" <[EMAIL PROTECTED]> To: <Repeater-Builder@yahoogroups.com> Sent: Monday, October 20, 2008 5:53 PM Subject: [Repeater-Builder] Re: GR500 Cooling Fan Control > Hey Ben... > > Don't get your pants in a bunch...when you use words/phrases such as: > > "GR500 with the R1225 radio. It is in the wall mount box. The cooling > fan that came with the box..." > > ...people think that you are familiar with electronics and will pick > up that Digi-Key is a source of electronic parts, much like Mouser and > other small quantity distributors... > > Eric graciously gave you the part number "317-1094-ND" and described > the part's function and installation. > > You came back with: > >>>"Do you have a good source for that part?" > > > Digi-Key is the source as a quick Google search will show you... > > Relax...and use Google first for anything you don't > understand...there's a lot of knowledge here but limited time to > provide everyone with answers that can be found quickly on the net. > > LW > > > > > > > --- In Repeater-Builder@yahoogroups.com, "wqjf348" <[EMAIL PROTECTED]> wrote: >> >> My thanks is in the quoted message below, but I will repeat it since >> it perhaps wasn't clear enough. >> >> This forum appears to be a little too high brow for a common man such >> as I. >> >> --- In Repeater-Builder@yahoogroups.com, "Eric Lemmon" <wb6fly@> >> wrote: >> > >> > The answer is in the quoted message below, but I'll repeat it since >> it >> > perhaps wasn't clear enough. The suggested thermal switch is >> available from >> > Digi-Key as their catalog number 317-1094-ND. The Digi-Key home >> page is >> > www.digikey.com If you type "317-1094-ND" into the search box, it >> will >> > open the page at which the switch can be ordered. >> > >> > Yes, you can wire two or more thermal switches in parallel, so that >> the fan >> > runs whenever any monitored device exceeds the temperature setting. >> > >> > 73, Eric Lemmon WB6FLY >> > >> > >> > -----Original Message----- >> > From: Repeater-Builder@yahoogroups.com >> > [mailto:[EMAIL PROTECTED] On Behalf Of wqjf348 >> > Sent: Thursday, October 16, 2008 5:18 PM >> > To: Repeater-Builder@yahoogroups.com >> > Subject: [Repeater-Builder] Re: GR500 Cooling Fan Control >> > >> > 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 >> > <mailto:Repeater-Builder%40yahoogroups.com> , "Eric Lemmon" >> <wb6fly@> >> > 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:Repeater-Builder%40yahoogroups.com> >> > > [mailto:Repeater-Builder@yahoogroups.com >> > <mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of wqjf348 >> > > Sent: Saturday, October 11, 2008 11:39 PM >> > > To: Repeater-Builder@yahoogroups.com >> > <mailto:Repeater-Builder%40yahoogroups.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 >> > > >> > >> > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > >
