I ran intensive frequency stability tests on my KX3 in 2014 after
getting it. Adding a VE3FMN heat sink and running the
temp-compensation procedure maximum drift running JT65 on 6m showed
+13-Hz drift in the first minute; no more than 10-Hz afterward. That
is good enough for JT65 (but not sure what WSPR or FT8
require). Before installing the heat sink drift was 54-Hz before temp comp.
http://www.kl7uw.com/KX3.htm
73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
[email protected]
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