Using several different K3 and P3 combinations in over the air test, it appears that when running the K3 in ESSB mode and set to 3KHZ the actual bandwidth for a full audio range SSB signal is about 3.5 to 3.6 KHz in width. Set for 4Khz the bandwidth is about 4.6 Khz. If this is not true then it appears that the P3 is improperly showing the bandwidth. In all the test the K3 receivers were set a 4 Khz bandwidth.
These same set ups show the standard 2.8 Khz k3 signal to be 2.8 Khz.
Can someone with a white noise generator and a good spectrum analyzer take a look at a K3 in ESSB mode. I dont want to be using ESSB if I cant limit my signal width to 3.2 Khz.
When listening to the 2.8 vs the K3 in ESSB set at 3khz there is far more difference in the quality than I think there should be for just 200 cycles more in bandwidth width the same audio input.
Hope to have someone give it a try and report. Thanks Van W4GIW
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