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

[Gary Hawkins]

I've successfully setup my KX3 with HRD 5.4.28 and WSJT-X, using a 
Signalink to interface audio to computer (my first attempt at digital 
operation).

Everything seems to work well on receive, and I can hear and decode a 
good number of stations in both modes (WSJT-X will do simultaneous 
decode of both JT65 and JT9 with BW set to 4kHz).

While TX is functioning (running 3W, ALC=0, have not done temp 
compensation but have VE7FMN heatsink), reception by other parties has 
been difficult.  Using JT65-HF I've had a couple of incomplete QSOs - 
the receiving station has been able to decode and respond at least 
initially.  Using JT9 the one station I contacted reported unable to 
decode, after trying on several different occasions/times.

So my questions are what are the capabilities of the KX3 in this 
configuration for these modes, i.e. running at 3W and with heatsink 
fitted?  Should I expect the KX3 to be able to function in both modes TX 
without issue, particularly relating to internal heat build-up, freq 
stability)?  Any thoughts on likely issue - pls ask for more details of 
setup if required?

73's Gary K6YOA