K3 FSK power transients

Posted by Dave Hachadorian on Sep 25, 2009; 2:35pm
URL: http://elecraft.85.s1.nabble.com/K3-FSK-power-transients-tp3712691.html

I'm getting my K3's set up for the CQWW DX RTTY, and notice
that there is a significant variation in power output
whenever the FSK goes from mark to space or space to mark.
One of these K3's is driving a high gain tetrode amp, and
the amp's screen current is jumping all over the place. The
power transient is only at the time of transition. The
steady-state power of the mark and space are equal.

I've complained about this before, but it seems to be even
worse now. I'm using FW rev 3.30.

This amplitude modulation has got to be producing some
illegal sidebands.

Dave Hachadorian, K6LL
Yuma, AZ























.

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html