[Elecraft] PX3 User Help Needed PLS

[Jim GM]

Just received my PX3,

Power cable has no fuse so I cannot hook up to my 50 amp supply What cord
do I need to purchase?

My main concern is I can not see a signal on it that I am listening to on
the KX3.  I see spikes and noise floor but no signals. I can adjust DISP,
Average REF, SCALE, SPAN. Must be some things I need to adjust in MENU but
not sure what.  I really do not know what I am doing with this.  Never had
a spectrum analyzer or messed with any signal displays before.

-- 
Jim K9TF