[Elecraft] K3 in NAQP SSB

[Tom W8JI]

> The obvious solution is just to use the K3 +12VDC output 
> connector for
> all accessories.  It's rated for 0.5A which should be 
> plenty for most
> devices.  As a bonus it's controlled by the K3 ON/OFF 
> switch.

That by itself doesn't cure ground loops and it doesn't cure 
the negative lead damage problems if the power supply has a 
ground path other than exclusively through the negative lead 
to the rig, so the negative of the supply still must float 
from ground everywhere except at the rig. The audio line 
grounds still need isolated too if they run between gear 
that is connected to power lines, like computers and such.