Posted by Petr, OK1RP/M0SIS on Feb 22, 2019; 4:47pm URL: http://elecraft.85.s1.nabble.com/K3-To-zero-beat-or-not-to-zero-beat-tp7649117p7649132.html
Hi,
if you are using the SPOT function on K3 then be careful...
It does not work properly when you have the NTCH in use.
I do not know why but I noticed it several times that SPOT is failing with
NTCH ON.
Also it does not work for 100% when the receiving signal is weak...