I find it a good practice to routinely isolate all audio lines between
the rig and computer (or external audio devices, etc.) I use
inexpensive isolation xfmrs but there are more expensive solutions if
that's your preference.
73,
Barry N1EU
On 8/22/06, dbp@tds.net <dbp@tds.net> wrote:
> Hi-
> A phone call to Paul Clinton at TenTec has helped alot!
> He suggested that I disconnect all of the extra connecting cables like the
> amp relay, the computer interface cable, the remote knob etc. from the rear
> of the ORION II. There was no distortion in my headphone audio. Then I
> reconnected cables one at a time until the audio distorted again.
> BTW I had been using a commercial computer interface with a home brew
> interface cable set with my ORION I with no problems. But with the ORION II,
> specifically the I/O connector cable was the problem. To find which specific
> wire was the culprit I cut one wire at a time from that connector until the
> distortion ceased. When I cut the "Line Out" wire, that stopped the
> distortion. It also ended my ability to copy signals using the computer.
> With some experimentation I found that a 1uF/50V capacitor in series with
> the "Line Out" wire (pin 4 of the I/O connector) cured the problem. I was
> able to get the cap. inside the DIN connector shell, no problem. It works now
> as it should. All's well that end's well.
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