Interesting ! I'll try some more ferrite tomorrow .........
John -----Original Message----- From: David Pratt [mailto:[email protected]] Sent: 23 March 2011 21:31 To: Ken Roberson; John Lemay Cc: [email protected]; [email protected] Subject: Re: [Elecraft] [K3] Noise from P3 *** Thank you to everyone for their kind help. *** I am pleased to report that putting a ferrite 'clamp-on' core at each end of the 12V power lead has completely cured the problem. Because the cable is quite thin, I managed to wind two turns round each core. I wonder whether a screened power cable might have been an alternative answer? Maybe I shall try that tomorrow. Incidentally, before fitting the cores I did notice that placing a finger near the screen did increase the noise. 73 de David G4DMP -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __________ Information from ESET NOD32 Antivirus, version of virus signature database 5978 (20110323) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 5978 (20110323) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ______________________________________________________________ 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
