I have used the MFJ-4103 (13.8 v, 2.89 amps) with my K2 and haven't noticed any switching noise issues.
Bob, N7XY On Oct 3, 2010, at 10:47 AM, Kenneth Moorman wrote: > I would like to hear from anyone who has attempted to use one of the small > external PC AC adapter power supplies with a K2. They are, of course, > switchers, so I am not very hopeful. I have found a couple of possible > candidates, one a Meanwell P40A-4PSJ rated at 13.8 volts at 2.66 amps and > the other an APS AD-740U-1138, rated at 13.8 volts at 2.8 amps. They seem > to have somewhat comparable specs as to regulation, ripple, and protection. > I suspect they would be pretty bad on RFI, so even though they can be had > cheaply, they may not be worth the grief. My fallback position would likely > be the little unit from Gamma Research, HPS-1a, but that will be twice as > heavy and probably ten times more expensive....but from what I've read about > it, it is not very noisy electrically. I would really appreciate any > thoughts, especially those with first hand experience. This would only be > for portable operation, not "normal" use. Thanks. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
