[RFI] Keyboard RFI

[Roger (K8RI)]

On 8/22/2013 3:12 PM, Dale wrote:
> Charlie,
>
> While the hash noise must truly be bad news, that 50V on the CATV line could be even
  worse.  Is that 50VDC or 50VAC?

It sounds as if the cable company has a serious problem extending into 
the realm of safety.  If the cable has 50V AC or DC to ground something 
is seriously wrong.  It should only be about 1 V for the signal on a 
spectrum analizer.

"I'd guess" that all that hash is being re-radiated by the keyboards, 
not generated by them.

Currently I use all wireless mice and keyboards, but I've never heard a 
peep from any keyboard or mouse, wired or wireless including IR.

I've used many brands and models. Presently using Logitech K350s with 
G700S mice.

What about the phone line?
I'd bet the kbd problem is related to the cable.

73 and good luck,

Roger (K8RI)