[Elecraft] KX3 - Holding Power Output at Set Value\

[David Hourdequin]

I am in the process of getting familiar with my newly acquired KX3 purchased for POTA and am enjoying it immensely.

I am powering it with a 14.8V, high quality, Yamaha walwart - very little internal noise. Settings indicated in the  VFO B display area using DISP are normal.

When I set the PWR level to 10 watts and then key the xmtr, the power immediately drops to 5 watts.  With the key down, I am monitoring the VFO B display which indicates a drop from 14.8V to 10+V and 1+A.  That makes it 10W.  If so, why does the reading when I push in PWR drop to 5W?  Is that ‘input’ power vs ‘output’ power, ie, 50% efficiency?  

If that is true, how does one achieve and maintain 10W of output power?

Any help would be most appreciated. Feel free to RSVP here or call if you like - or send me your number and I’ll call you!

Tnx es 73, David, NS4V

David R. Hourdequin, PE
828-421-6216
drh at dremy.com