If I had paid 1,500USD or 1,700USD for A K3 10W rig I don't think I'd risk putting anything but a real power supply on it. Wall warts are not (in my opinion) real power supplies.
Look at this: http://www.mfjenterprises.com/Product.php?productid=MFJ-4125 And it's reviews: http://www.mfjenterprises.com/Reviews.php?productid=MFJ-4125 http://www.eham.net/reviews/detail/1895 And if you get a KPA3 later you won't have to get another one... 73, Tom Amateur Radio Operator N5GE On Tue, 10 May 2011 12:13:33 -0700, Jim Brown <[email protected]> wrote: >On 5/10/2011 10:54 AM, Ross Primrose N4RP wrote: >> I have a surplus laptop switching supply that's 15V @ 5A. Is that too >> high a voltage to run my 10W K3 on routinely? > >If it were my radio, I would add one or two silicon diodes in series >with the positive lead to reduce the voltage to about 14 volts. For a >10W K3, I'd guess that 5A diodes would be just fine. > >If it's a laptop supply, I would also be concerned about RF noise that >it might produce. > >73, Jim K9YC >______________________________________________________________ >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 ______________________________________________________________ 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
