Agreed there's a ground Loop problem somewhere. Go to EPO and get a one-to-one
audio transformer. That'll isolate the ground from the computer to the PC. Just
about any Z will work but an 8 ohm to high impedance would be best.
Chris WB5ITTTrustee W5APXWRXZ789 GMRSSociety of Broadcast Engineers Vice
Chairman and Frequency Coordinator, SBE134 SE TX and SW LA
On Tuesday, February 17, 2026 at 07:31:48 AM CST, Jimmy Vance via BVARC
<[email protected]> wrote:
There is a ground loop somewhere. You need an isolation transformer in
the audio line. You can try a passive device like this, or get an active
device which costs a bit more https://www.amazon.com/dp/B08G9J74VX Cable
Matters Ground Loop Isolator 3.5mm Noise Isolator Hum Eliminator for Car
Audio and More
On 2/17/2026 4:44 AM, Suggs, Marvin (KTRK-TV) via BVARC wrote:
> I have a Uniden Home Patrol scanner that I stream the audio from and it’s
> worked great for years. Recently the IT department replaced the computer and
> now I get a 60 cycle hum in the audio. I have a stereo cable going from the
> audio out on the Home Patrol to the headphone jack on the computer. Any idea
> on how to solve this problem could earn you a free cheeseburger 🍔.
> Thanks
> Marvin
> N5RKW
> Sent from my iPhone
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