ThanksĀ I will look at the slides. Please note there is NO sound from the K3 as the S meter jumps around. The hum you hear is the fan on an Ethernet switch under my desk, it sounds much louder than it really is. Rich
Sent from Yahoo Mail for iPhone On Sunday, April 10, 2022, 3:33 PM, Jim Brown <[email protected]> wrote: On 4/10/2022 1:21 PM, Rich Lim via Elecraft wrote: > The S meter jumps all over th place even without an antenna attached. > K3 and FTDX10 simultaneous Sounds like you have a serious grounding and bonding problem. Study N0AX's ARRL Book on the topic, to which I contributed, and/or these tutorial slides. http://k9yc.com/GroundingAndAudio.pdf 73, Jim K9YC ______________________________________________________________ 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 Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]

