[Yaesu] Re: Mark-V - WARNING!!

[Wiley Sanders]

 > I can still feel a quivering between the radio and the PC

You mean you feel an electric shock when touching the rig and computer at the 
same time? You may have dangerous safety problem, like an open ground on the 
rig, PC, or the house wiring. If the rig and PC are grounded together you 
should have 0 volts potential between them (not 0.1! - 0.0!). Have you 
measured the potential of each piece of equipment to ground? Is the AC ground 
in your house functioning?

It's normal for there to be some leakage from the power supply inlet filter 
caps, and most equipment floats at a few AC volts above ground but its pretty 
unusual for the leakage to be large enough to shock. My old FT-101 floats 
about 30V above ground - but I added a 3rd safety ground lead to the power 
supply cord, and I also have it securely grounded to the ground rod right 
outside the shack. If I was really serious I would replace the filter caps 
inside the chassis with newer less leaky ones (and add a choke in the lines 
for a true LC filter.)

My laptop floats about 14VAC above ground too - when I operate PSK31 or RTTY 
is has to be grounded to the rig or there is a huge AC hum in the audio.

-Wiley KF6IIU