[Elecraft] K3 - Sidebands reversed on 18.100 DATA mode

[Jim Rogers]

Why are the sidebands reversed on 18MHz DATA mode, tuning lower in 
frequency the signals on the waterfall decrease in frequency? Tuning 
lower in frequency the signals on the waterfall increase in frequency. 
This appears to only be the case on 18MHz DATA mode.  If I select USB 
the sidebands are normal. This has to be in a table somewhere.....

JIm, W4ATK