[R-390] PSK-31

[Scott, Barry (Clyde B)]

Good point!

In my case, it shouldn't be a problem as my R390A does not have an FL101.  I use an external, modern power filter with a 3-wire ground fed by a GFI-protected circuit and an external ground.  That along with the audio isolation transformer should keep my laptop about as safe as I can make it with this setup.

Of course, anything can (and sometimes will) go wrong...

Thanks,

Barry - N4BUQ

>  
>  A caution........
>  
>  Many R-390A's chassis float 20-50V off "ground"
>  Connecting an ungrounded R-390 to a computer might cause you and the
>  computer great unhappiness.
>  I learned this the hard way.  I was using a PK-232 to copy 
>  HF FAX with Dot
>  Matrix printer (many years ago) and fried the PC board in 
>  the printer.
>  
>  Jim
>