[R-390] Computer RFI and R390s

[Richard Biddle]

If you are connecting the R-390 to the computer audio card, you may also
want to try a 600ohm/600ohm isolation transformer in the audio line.  I
had a ground loop problem that cleared right up when I did this.  I also
put a Topaz line isolation transformer on the primary of the radio
before the variac.

>How do you guys keep out computer hash from your listening/receiving?
>Turning the computer off isn't viable, since one of the programs I use
is a
>RTTY program.

73 de Richard W5SRB