[Elecraft] KPA1500 Power Supply noise

[Steve Hall]

Regarding placement of the KPA1500 power supply.
After repairing and maintaining residential home computers professionally
for several years, be advised that floor placement will allow 5X the dust
to be sucked into the unit.  Units with air flow in and out are like vacuum
cleaners.  I recommend raising the unit, even if only a foot or two, to
reduce dust intake.  Units on the floor were packed with dust as compared
to units on desks.