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
