[Elecraft] Which PS for K2/100, linear or switcher?

[Earl W Cunningham]

The noise from a switching power supply comes in via the antenna, so if
the antenna is located suitably distant, the P.S. can be located next to
the rig and you won't hear the noise.  

All switchers generate noise to some degree.  For those that say their
switcher dosen't, they should locate their P.S. near to their antenna and
then they'll change their mind.

73, de Earl, K6SE