The early Samlex switching power supplies were on the noisy side but they have corrected that problem years ago. I personally use the Samlex SEC 1235M switching supply with my K3 and certainly do not get any noise from it. 73 from Fern VE7GZ with K3 #412
----- Original Message ----- From: "Phil & Debbie Salas" <[EMAIL PROTECTED]> To: <elecraft@mailman.qth.net> Sent: Tuesday, July 08, 2008 7:56 AM Subject: [Elecraft] Switching supplies and the K3 "Same here. I have two of these supplies, and have yet to hear a peep of RF noise from them. 73 Stewart G3RXQ "I am having very good performance from the SEC 1223 which is the same supply I use with the K2/100. If it does generate any noise I have yet to hear it. Bruce-W8FU" I'm using a SEC-1235. It is also RF quiet and works well. I modified mine by adding Powerpole connectors to the back, and changed the fan circuitry so that the fan runs at slow speed all the time (still full speed if/when necessary). Info is on my website in the "Equipment Modification" section at www.ad5x.com. Phil - AD5X _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- Internal Virus Database is out-of-date. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 270.4.3/1528 - Release Date: 7/1/2008 7:26 AM _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com