Last night, I captured the CW spectrum of my modified FT-1000D with the K3/P3:
http://www.ssec.wisc.edu/~scotte/hr/FT1000%20100W.jpgIt would be interesting to see what the K3 looks like on the same scale, etc. Anyone with two of them and a P3 who would like to contribute? Here's the set-up:
7010 kHz
K3 bandwidth 400 Hz
100 W output
Pulsed at about 40 wpm
Span 2 kHz
Scale 72 dB
Peak Hold
Average mode, 10
Update 10 ms (actually slower at this span)
Adjust reference level for peak signal near the top of the range. I just transmitted into a dummy load, and relied on leakage to the K3, which seems to have been about -65 dBm.
Email me the file off list, and I'll post it.
The spectrum of an unmodified FT-1000 would also be interesting. It's a lot worse.
I'd also be glad to make an on-air measurement, for any kind of transceiver. It would be even more interesting to have a collection of these measurements. You'll need to be fairly loud here.
73,
Scott K9MA
[hidden email]
Scott Ellington
Madison, Wisconsin
USA
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