Thanks for the very clear explanation Andrew. I had not been as
impressed with my K3 in SSB with the 1.8 filter, as I had in CW. But
your points are well made and explain the issue well. This has been
my experience in SSB also.
David Wilburn
NM4M
http://www.nm4m.com
http://www.k4rc.net
Andrew Faber wrote:
Rich,
I've used the K3 in both SSB and CW contests from P49Y. SSB works
great, in part because it retains very good intelligibility when cranked
down pretty narrow (i.e., below 2.0 kHz). It seems to work better to
use the Hi and Lo mode instead of Shift and Width.
OTOH, for CW, the rx is really great because of the ability to
disregard strong adjacent signals. While that performance capability
exists in SSB also, in a contest it isn't as dramatic an improvement
over other receivers for the simple reason that in SSB, much of the
interference you are trying to eliminate is really in the passband.
It's splatter and distortion products from adjacent signals, many of
which may have their processors turned way up. The K3 doesn't generate
the digital byproducts as my Pro2 does, and that is helpful, but there
remains the "real" interference caused by the other signals. So the net
improvement from the great rx qualities doesn't turn out to be as useful
in SSB as in CW. In other words, the bands are still a mess in a major
SSB contest, and the best rx in the world can't eliminate all the mess.
73, andy, ae6y
----- Original Message ----- From: <[EMAIL PROTECTED]>
To: <elecraft@mailman.qth.net>
Sent: Wednesday, October 22, 2008 7:42 AM
Subject: [Elecraft] K3 SSB is it really better
I'm curious what others are finding with the K3 on SSB in contest
conditions. I've had mine for a few months and the difference between
my mkv and the K3 is like night and day on cw.
I havn't had a chance to really test it out on SSB. I'm getting ready
to travel to K5NA's for CQWW and I wonder if its worth taking to
replace a ProIII or MKV on 20 meters which will be the money band
(unless 15m opens up).
20m will be a mess and I'd like to think the K3 will help with crowded
band conditions.
Thanks
Rich - N5ZC
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