If you like computer control of your station, than I agree that the remote program is a great solution. I still have stacks of rotator control boxes and relay switches on my desk and I can make QSOs without a computer, which is why I suggested something like this https://www.arraysolutions.com/om-2500-rem for the Elecraft amp.
John KK9A Sent via the Samsung Galaxy 7 edge, an AT&T 4G LTE smartphone. On Wed, May 30, 2018 at 10:15 AM, N2TK, Tony <[email protected]> wrote: > Hi John, > For a long time I had the Acom 2000A sitting on a shelf in the basement > right below my feet in the shack. I used their remote box which worked very > well. I have a KPA500 on the same shelf using KPA500 Remote which also > works > very well for controlling the amp. Once the KPA1500 Remote is available I > would think it would work as well as the KPA500 Remote program to control > the amp. I can't think of a reason to have additional hardware in the > shack. > I am in the process of removing more of the manual controls to the > basement. > 73, > N2TK, Tony > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of [email protected] > Sent: Monday, May 28, 2018 9:14 PM > To: 'Elecraft Reflector' <[email protected]> > Subject: [Elecraft] KPA1500 fan noise concern > > I imagine that due to the KPA1500's size it requires a higher volume of air > than a large amplifier would. Its small size and weight make it appealing. > The Acom 2000 has a control box that is separate from the amp so you really > never hear the amp run. I am wondering it something similar can be done > with > the Elecraft KPA1500, perhaps an option like the K-Pod, so that the noise > source is further from the operating position? > > John KK9A > > > > Thanks for the offer, Clay. But we actually did extensive thermal analysis > of both the heat sink and fans, tested many different fan types and > configurations, and did comparative noise testing of the KPA1500 vs. a > number of other amps. > > As you allude to, there's no magic bullet. Heat must be removed, with > various physical and electrical constraints to be satisfied. > > We have some pretty amazing thermal imaging devices that we use to examine > heat signatures of electrical components. These were used during R&D, which > is how we determined that two LDMOS devices were far better than one for > heat distribution. We also used it to evaluate the design of our very > large/very thick copper heat spreader. On the production line, we review > all > modules for hot spots during burn-in and make sure the cooling is working > perfectly (onset temperature, air distribution around modules, etc.). > > Of course supplemental cooling of various types has been used with > amplifiers in the past. I believe we have a couple of customers and staff > experimenting with this idea, and anything that emerges will be posted > here. > > 73, > Wayne > N6KR > > ______________________________________________________________ > 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 > Message > delivered to [email protected] > > ______________________________________________________________ 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 Message delivered to [email protected]
