FacebookにUSのFieldDayで２０ｍのSSB,CW,PSKで同時に３局が運用して、全く問題なかったよー！ってリポートが上がってましたので、転載します。 ６０ｍ離れたPSK３１の信号のパナアダプタの画面が添付されていますが、特に運用に支障をきたすことはなさそうですね、、
1時間前 ·
This
Field Day, the Phoenix Thunderbird Amateur Radio Club had an all-Flex
6000 series event. We were 4A with a 6700 and three 6300's. We proved
that the superior phase noise of the 6xxx series transmitters makes a
HUGE difference on in-band use for contesting. We were able to have a
6700 on CW, a 6300 on PSK31, and a 6300 on phone SSB all on 20M at the
same time without interfering with each other! Our antennas were all
within the 400ft, and we were running 100 Watts.
Take a look at this screenshot from my 6700. This shows a PSK31
transmission from the 6300 station. It was about 3 wavelengths from the
6700's antenna. The 6700 was a Carolina Windom 80 at 65ft, and the
6300's antenna was a Carolina Windom 40 at 65 ft. There was ZERO
increase in the noise floor after the fall-off of the signal +/- 20Khz
from the PSK signal. The CW Ops couldn't even feel it! This was
INSANE! Everyone at the FD site was amazed that we could all operate in
the same band. The 6700's phase noise is rated at -148dBc/Hz and the
6300 is at -140dBc/Hz. This puts them at the top of the pack, and our
experiment this weekend proved it. Last year, we had to isolate the
radios to separate bands when using various Kenwood and Yaesu radios.
Our club now insists on using Flex 6000 radios going forward.
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