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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