[Elecraft] JT65 with KX3

[Edward R Cole]

I ran the KX3 temp compensation procedure twice (the first run was a 
learning  experience so feel I got a good run on #2).  I used my AG3 
coupled with a very good freq counter.

JT65 is a synchronous code so that demands good frequency control 
(<+/- 10 Hz) and near perfect timing (< 1 second).  Both are 
essential to good decodes of very weak signals.  There is no casual 
relationship between them.  If either is off very much signals are not decoded.

I just performed frequency calibration for one of my transverter 
customers and got the 144-MHz transverter within 3-Hz (tuned heated 
xtal osc.).  The K3 shows frequency within 1-Hz at 28-MHz (using 
EXREF + ext OCXO).  Both were run for two hours before calibrating.

73, Ed - KL7UW
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