En Gerhard Beulke va escriure en Sat, 10 Apr 2004 01:56:02 +1000:

When I try to capture a video from a VCR (the VCR is connected to the
antenna), I get a humming audio signal.
When I unplug the aerial cable, it's gone.
The antenna is installed on the roof and is proper earthed. In between
is a booster. I don't know if the booster causes the trouble but it
shouldn't.

The humming sound is only there when the VCR is connected to the PC (via
firewire) and the aerial cable is plugged into the VCR.

Any tips how to solve the problem would be greatly appreciated.

Hi,

In this page:

http://www.jensentransformers.com/apps_wp.html

Look at this document:

http://www.jensentransformers.com/an/ts_guide.pdf

Of course they try to sell you their solutions, but the problem-
finding methodology and some solving tips are very good.

Toni