Raymond I have an IBM Thinkpad with the same problem. I replaced the IBM switching power supply with an older analog power supply and the problem went away (at least from power supply noise). The laptop still generates some noise itself, but much less than the power supply did. Good luck and 73 Bob N6WG
----- Original Message ----- From: "Raymond METZGER" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Sunday, March 16, 2008 12:05 AM Subject: [Elecraft] [K2] : Laptop UPS > Hi Elecrafters, > > > > I am interested to know what solution can be used to avoid the noise > generated by the 220 V AC (OEM) UPS of my recent Dell Latitude Laptop. > > For the time being, I can only use the laptop with my K2/100 if the laptop > is powered by its internal battery. > > > > Raymond METZGER > > F4FNT > > K2 5,636 - K3 expected at month end (ordered 8 September, "Katiegram" > received last Friday) > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > 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 _______________________________________________ Elecraft mailing list Post to: [email protected] 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

