K3 and phase noise

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K3 and phase noise

Bill W4ZV
I wrote:

Rig     1kHz    2   10   20   50   100   1M

K3      -110  -119 -136 -140 -143 -144  -150
ORION 2 -121  -129 -126 -125 -118 -128  -138

Delta    -11   -10  +10  +15  +25  +26   +12

Make that                          +16

                                 73,  Bill


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Re: K3 and phase noise

Eric Swartz - WA6HHQ
Administrator
And if you look at the actual phase noise plots the actual cross over
point is right about 5 kHz.

You are absolutely right about the importance of looking at the overall
area 'under the curve' for phase noise as you move out across the band.
The sum integrated total of the mixing of the phase noise with all off
freq signals adds to the total noise floor in your RX on a busy band.
This is especially important on bands like 40M at night on the east
coast and Eu, where there are lots of -very- strong BC signals in
addition to all the ham activity within 100 kHz to a MHz of your
operating frequency. Add a busy contest and whammo! :-)

73, Eric  WA6HHQ
-----

Bill Tippett wrote:

> I wrote:
>
> Rig     1kHz    2   10   20   50   100   1M
> K3      -110  -119 -136 -140 -143 -144  -150
> ORION 2 -121  -129 -126 -125 -118 -128  -138
>
> Delta    -11   -10  +10  +15  +25  +26   +12
>
> Make that                          +16
>
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