The most recent issue of QEX contains an article that outlines some simple filtering that can be applied to a small switcher to remove the birdies inherent in the class. That said, I don't remember ever seeing a "linear" power supply in this low-current application, but there are no doubt some...try e.g. Astron -- I have a couple of their larger linear supplies that are very good. It seems unlikely that you can find a wallwart linear, but there are good wallwart-type supplies with filtering...normally used to provide power for higher-end laptop computers.
John Ragle -- W1ZI ===== On 11/13/2011 11:58 AM, David & Linda Kerl wrote: > Hello all, > > This is my first posting to the reflector, after purchasing a used K1-4. > First let me say how impressed I am with the receiver. Simply amazing! > I am now in the process of learning all abt it because in January, I have the > oppertunity to operate portable KH6. > > My question is, can anyone recommend a wallwart to use with the K. One that is > free of birdies. I would prefer a linear supply, but if there is a switcher > out > there that is lnown to be clean, Im willing to use one. > Many thanks and hope to work many Q's as N9HF/KH6 as I can. > > Dave > N9HF > ______________________________________________________________ > 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 > > > -- Sent from my lovely old Dell XPS 420 ______________________________________________________________ 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
