I have used three: My original '80's vintage Astron RS20. It didnt have enough current and the K3 would trip off in RTTY.
I use a Jetstream 28 amp switching power supply (I have three of these). These I use when I ake the rig out of the shack portable. I have never had an issue with these, I dont notice any birdies and they have never tripped off on RTTY. I have used them in the USA and also on a ship in Singapore harbor on both 110v and 220v and no issues whatsoever. And its easy to carry and deal with. Quite inexpensive. But my main dedicated K3 power supply is a mid 90's vintage Astrom RM35 like the one you are replacing. This one is hockey puck/paper clip reliable and I appreciate the metering. But its heavy and it stays home; However, if I take the rig somewhere, the Jetstreams are the ones that travel well. Lu - W4LT K3/P3/K1 Message: 36 Date: Thu, 11 Oct 2012 07:09:37 -0400 From: Bill <b...@w2blc.net> Subject: [Elecraft] K3 - what power supply are you using? To: elecraft@mailman.qth.net Message-ID: <5076a8f1.2030...@w2blc.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed I am about to replace my 35 year old Astron 35 amp supply. The choices are switchers or analog and 20 or 35 amp. The supply will ONLY be used for the K3. Everything else in the shack is on a different supply. Questions: Are the 20 amp supplies enough power for the K3? Are switchers any good or is their track record poor for life and noise? Should I consider anything other than Astron? Thanks, Bill W2BLC -- ______________________________________________________________ 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
