Which of the following two signal sources would enable the best results
from the KX3's extended temperature calibration?
--Elecraft's XG50 board, which puts out 49.380 MHz ± 5 ppm.
-- Siglent SDG 2042X waveform generator, with input from a Trimble
Thunderbolt GPSDO. Maximum frequency on the Siglent is 40 MHz.
The calibration instructions call for using a signal source close to 50
MHz. Is 40 MHz close enough? The XG50 is much closer to 50 MHz, whereas
the Siglent/Trimble potentially has the capability of being considerably
more accurate. I'm interested in squeezing as much frequency stability
out of the KX3 as possible.
Thanks and 73,
Frank O'Donnell K6FOD
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