Nick, What is the "12 watt" version you're referring to?
73 K0PP On Oct 24, 2017 5:29 AM, "Nick - VE3EY" <[email protected]> wrote: > I have a K3s/10 (12 watt version) which I intend to use in the upcoming cq > ww cw contest. This unit does not have KPA3A power brick and cooling fans > installed. > > While doing some trial runs I noticed that the area around the KLPA3A power > transistors is getting fairly hot after prolonged contest use. My guess is > the transistors are working harder when used as finals. The rig needs to > produce between 6 and 12 watts to properly drive the SS amp I intend to > use. > > Looking for some opinions: > > 1. Don't worry about it. I am paranoid. The KLPA3A power transistors can > sustain the rigor of 40+ hours use in the contest. Just make sure they are > properly fastened as directed in the assembly manual. > > 2. Rig up some passive thermal cooling. Perhaps a heat-sink underneath > the rig to allow heat to dissipate. > > 3. Mount a 12v cooling fan somewhere to allow for airflow underneath the > radio to take away excess heat. > > > > 73 > > Nick VE3EY > ______________________________________________________________ > 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]
