No Tom..only when running the KPA/100 did we hear the spur. I fixed it with the help of Ron ZL1TW but it may be considered an untested/experimental mod and as such did not get posted to the Elecraft reflector.
I've e-mailed Gary and told him of my successful experience with it. There are 5 of us who have done the mod and it has worked for all. Hopefully it will get posted here for others to see. It did not show up when I searched the old archives. Thanks to everyone for all the e-mails on this. 73 de Tom K2TA K2/100 #1117 ----- Original Message ----- From: "Tom Arntzen" <[EMAIL PROTECTED]> To: <elecraft@mailman.qth.net>; "Tom Althoff" <[EMAIL PROTECTED]> Sent: Tuesday, November 30, 2004 2:03 PM Subject: Re: [Elecraft] KPA-100 spur on 160M? > Is this spur present when running full power QRP? > Try 15watt to see if the spur is made by the K2 itself . > Turn PA off in menu or power K2 from it's DC barrel jack. > If it's gone you know it's made by or with interaction of the KPA100. > > Tom LA1PHA > > ----- Original Message ----- > From: "Tom Althoff" <[EMAIL PROTECTED]> > To: "Elecraft" <elecraft@mailman.qth.net> > Sent: Tuesday, November 30, 2004 9:07 AM > Subject: [Elecraft] KPA-100 spur on 160M? > > > Has anyone who experienced oscillation with their KPA-100 (internally or > externally mounted) seen a spur about 1Khz up from the main signal? > > If I crank up my power to 100W a very "brrrrrippy" spur pops up just above > my signal only on 160M. If I keep the power at 95W or less it is not > there. > > I do not hear it in my external rx when the amp is bypassed. > > I keep it at the 90W level if I am operating barefoot on 160M of course but > if this is not normal or never before seen then I'd be tempted to look into > a wiring error in the PA. > > I eventually want to wire the PA externally. Elecraft recommends > troubleshooting the KPA-100 while it is mounted in the K2 so I'd like to > clean this up before extending the PA away from the K2 and a new can of > worms gets opened. > > 73 de Tom K2TA > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > 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: Elecraft@mailman.qth.net 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
