The relay making the noise sounds like it's on the rear-top side of the K3. I doubt if it's pwr sup delta since I can disable vox which results in very little current draw but can still hear it. I can slowly close the straight key and hear the relay contats close then open the key and hear them open just like you would expect any relay to act. Interestingly, pushing the XMIT button does not activate the relay and stranger still, while the XMIT button is activated, keying the rig does not activate that relay however it transmitts normally. Also I doubt if a relay grunt because I can hear the mechanical clank fairly well. 73 N4LQ Steve Ellington [email protected] ----- Original Message ----- From: "wayne burdick" <[email protected]> To: "Elecraft Reflector" <[email protected]> Sent: Wednesday, February 04, 2009 6:01 PM Subject: Re: [Elecraft] K3: Relay noise?
> It may be the delta in supply voltage on keydown slightly stimulating > one or more relay coils. The DC shift could move the contacts a tiny > bit. Or it might be an extremely small timing window, associated with > T/R switching, that puts a little glitch on a relay control line. > Either way it's nowhere near enough to change the state of a relay. > > Nothing to worry about; in fact it might be therapeutic. But I'll > listen for it myself. > > 73, > Wayne > N6KR > >> My K3 makes a very quiet relay-like keying noise.... > > --- > > http://www.elecraft.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 -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.233 / Virus Database: 270.10.17/1934 - Release Date: 02/03/09 17:48:00 ______________________________________________________________ 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
