Oh oh, Jim: We need a P3A :-) Good you took this on.
73, Phil W7OX
On 7/27/15 10:05 PM, Jim Brown wrote:
I finally got around to repeating a few
measurements using with the new K3SYNA boards.
I've added the results near the beginning of
P3_Spectrum_Measurements.pdf
There's also a measurement of an un-keyed,
unmodulated carrier.
Executive summary -- the screen of the P3 can
display only 80 dB of dynamic range, and within
that displayed range, I cannot see any
difference in signal bandwidth between the new
synth board and the old one. There ARE
differences, and I've seen measurements showing
significant reduction in phase noise, but it's
another 10-20 dB down from the peak.
It would be possible to see those differences by
lowering the P3 reference level, letting the
upper 20 dB of dynamic range run off scale. I've
done that with the new K3SYNA boards, but did
not do so with the older K3SYN, so I have noting
to compare to. :)
Note that the only new measurements in the file
are those showing the K3 steady carrier and a K3
sending dits at 25W for comparison with older data.
73, Jim K9YC
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
