[Elecraft] [KX3] JT65 and JT9 possible TX issues

[Jim Brown]

Additional advice from the Elecraft guys. The KX3 has two operating 
ranges, with the transition at 3W. It is most efficient on the low side 
of that transition. To find that "sweet spot," slowing increase the 
power to just above 3W, listening carefully for a relay click, then back 
off the power until you hear it click again.

This matters both for battery drain, and for heating with keydown modes 
like JT65.

For JT65 on the higher frequency bands, especially 6M, it's important to 
perform the temperature calibration procedure documented on the Elecraft 
website.

K1JT does not recommend JT9 on 6M for reasons of frequency stability, 
but I've successfully used JT9 on 6M with my K3.

73, Jim K9YC