Brian,
The XG50 is not really expensive and is a good stable source. It is
'cheap' compared to the frustration factor involved with trying to use
other methods.
If you have access to an instrument lab with highly stable signal
sources in the 50MHz range, then you are all set, but most are not so
fortunate.
The problem in justifying the price is that it is seldom used once you
do the KX3 calibration. Maybe we should create a 'ham sharing XG50'
network to allow each to pay a portion of the total cost of the XG50.
That would work fine if you have several locals with a KX3 - check with
your local club.
73,
Don W3FPR
On 4/26/2016 3:37 PM, Brian Waterworth wrote:
I would agree with the ext temp compensation. It is the right thing to do
and let's the onboard computer handle the drift variations for you. I
don't have the xg50, which is recommended. I tried the wwv approach and
that did not work, even when wwv was coming in fairly strong at s7. I
watched the collection on the kx3utility and it was good on the third try,
no gaps or fades that caused the beat frequency to be read incorrectly.
However, I have returned to the standard compensation as opposed to what I
attempted to do with wwv and the extended temp compensation. I did it
three times and all results were worse than the standard.
I will try to build a stable frequency oscillator or perhaps purchase the
xg50 so I can do the temp compensation properly.
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