Thanks, Larry.
I'm part of a group that does a county expedition to Tehama Co (near Red
Bluff, about 200 miles N of SF). We run 3-4 K3s with KPA500 amps. With
antenna separation on the order of 200-250 ft, we can run two stations
on the same band.
Yes, the issue for this situation is phase noise, and the phase noise
plots in my report show it very clearly.
73, Jim K9YC
On Tue,9/23/2014 9:13 PM, Larry Benko wrote:
Jim (K9YC),
Very nice job on your report last month.
I did some work on a multi-transmitter Field Day site a coulple of
years ago when I wanted to run 2 transmitters on the same band where
W3NQN type filters could not be used to reduce phase noise. It can be
found at:
http://www.w0qe.com/Technical_Topics/phase_noise_and_overload_testing.html
and shows how the K3 was the best radio I tested. By the way we
operated 40m CW and 40m RTTY at the same time with NO filters. Ditto
also for 20m CW and 20M RTTY with NO interference. The web page has a
link to a PDF of the document if interested.
73,
Larry, W0QE
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