Well, I like mine cool. In my experience, cool equipment has fewer breakdowns and lasts longer. Not only that, it has less drift.
There is a menu in K2 to calibrate the temperature probe that controls the fan. I have mine set to a much higher temperature than what it actually is. This makes the fan come on at a lower temperature. I just put up with the noise. My K2/100 drifts about 70 Hz from a cold turn on in the mornings to "ambiant." If I begin rag chewing and really pound away it will drift another 40 Hz. I live with this every day, and although it gives me something to do while rag chewing, but I'd be happy to improve the temperature stability further and reduce it a bit more. So, Ron, It got hot enough you couldn't put your hand on it... How far did it drift ? TR, WB6TMT K2 S/N 838 At 10:24 AM 5/27/2009 -0700, you wrote: >Good grief! How cool do you want to keep the K2? > >Several years ago I ran some tests for one of the engineers to check the >K2's frequency stability vs. temperature. Several testers and I cycled the >K2's internal temperature by hooking on a suitable dummy load and >transmitting for extended periods so the 100 watt PA would cook the insides. >(Some actually did the "brick on the key" routine from what I recall.) > >Mine was heated enough I couldn't keep my hand on the PA heat sink and the >internal air temperature was well above 120F. That was done dozens of times >with no deleterious effects on the K2 or the amp, then or since. > >I have used a 4" square muffin fan sitting in rubber feet on top of the K2 >running at a slow speed, not to keep it any cooler but to avoid the noisy >little fan on the back from running. > >Ron AC7AC > > > >-----Original Message----- >How noisy is it ? > >One idea I've had for a long time is to remove the elecraft fan on >the rear of K2 and find a hose of the proper diameter, somehow >mounting it in a semi-permanent fashon. at the other end of the >hose, a box with a big fan that can really blast some serious air >through the K2. Put the box on the floor or in the next room so you >don't have to hear it. > >Any thoughts ? > >TR, WB6TMY K2 S/N 838 > > >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:[email protected] > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.339 / Virus Database: 270.12.42/2137 - Release Date: >05/27/09 07:50:00 Tel: . . . 707-832-4304 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
