[TenTec] ARRL Phase Noise Data Plotted to 1 MHz

Jim Brown k9yc at audiosystemsgroup.com
Sun Jul 27 16:45:04 EDT 2014


The title says it all -- Rick asked for it, and I did it this morning, 
changing the frequency axis to log and moving labels around. I also 
added data for the new IC7100, a do everything cheapie with a remote 
head, just reviewed in July QST.

k9yc.com/TXPhaseNoise-1MHz.png

For the Field Day problem, look at the data around 200-300 kHz -- that's 
what we run into when we run CW and SSB on the same band. There's 15 dB 
difference between the IC7100 and the IC7600/TS590, and the K3 is 
another 17 dB better than the best of those!

And, as I noted in an earlier post, this is only one part of the problem 
-- there's also IMD on both TX and RX, clicks, audio distortion, and RX 
phase noise. This stuff CANNOT be filtered -- it's all "in band."

Now I'm going to tackle the key click data.

73, Jim K9YC




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