I had similar problem. The solution I use is the external TX delay circuit of 30 ms (adjustable) that utilizes 1 FET transistor, capacitor and couple of resistors. It is built into connector body and plugs into ACC socket of K3. Now my T/R relays in the amp are safe.
73, Igor UA9CDC ----- Original Message ----- From: "briana" <[email protected]> To: <[email protected]> Sent: Monday, October 29, 2012 4:01 AM Subject: Re: [Elecraft] K3 and sticking amp T/R relay > Do this at the risk of QSD CW. Higher settings (>10ms) cause this. > The bad keying is independent of internal or external keyer. > > It is a bug that has never been fixed in the K3. > > 73 de Brian/K3KO > > > On 10/28/2012 3:23 PM, Don Wilhelm wrote: >> Gary, >> >> The config menu TX DLY parameter will change the time from keydown to >> the onset of RF. >> >> 73, >> Don W3FPR >> >> On 10/28/2012 4:09 PM, Gary Smith wrote: >> >>> My question for here is; if the amp is not properly sequencing with >>> the K3, what setting can I change within the K3 to provide more time >>> for the amp's relays to close before the K3 transmits? I remember >>> there was a feature to allow ms changes for QSK in the K3. How do I >>> find that option? And should I decrease the MS time in the K3 or >>> increase it to let the perhaps relay in the amp have time to close >>> first to avoid hot switching? >>> >>> >>> >> ______________________________________________________________ >> 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 message. >> Checked by AVG - www.avg.com >> Version: 2012.0.2221 / Virus Database: 2441/5359 - Release Date: 10/28/12 >> >> >> > > ______________________________________________________________ > 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 ______________________________________________________________ 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
