[Tom Strand]

Ty,

Thank you for the guidance.

I would guess that what I need is a Hum Eliminator for only the 3.5 mm leads.

As you can tell, my beginner brain thought that a TRS cable (vs TS) took care of interference, but of course, the intelligence isn’t in the mechanical presentation of the cable, but in the circuitry and physical wiring of the cable.

For now, I will keep the microphone output at 10 (or less) or move closer to the XLR jack that links to the room system.

But game for any adapter options pre-wired to help remove the AM radio.

Tom

[Tom Strand]

Ty,

Thank you for the quick response.

re: Rode. It’s a Rode VLXR as described https://www.amazon.com/Rode-VXLR-Adapter-VideoMic-Mini-Jack/dp/B000Y021NA/ref=sr_1_1?s=electronics&ie=UTF8&qid=1525904511&sr=1-1&keywords=rode+xlr+adapter.

I assumed the M<>M 3.5 TRS connection between the Zoom H6 line out and the Rode 3.5 F <> XLR M was balanced. But that may be the only unbalanced link in the chain. Does a balanced 3.5<>3.5 M cable exist? Or maybe a 3.5mm M <> XLR F single cable would work. I thought the VLXR would do the magic to prevent AM radio interference.

WORKAROUND: Yesterday I was able to use the MIC out and reduce the volume to 10 so that online people wouldn’t hear the interference. I’ll try that again tomorrow. I tried the LINE out, but the miximum reduction is -30 dB which wasn’t enough to hide the radio interference.

Tom

[Tom Strand]

This happened to me today.

Zoom H6 – (4) XLR cables + Sennheiser microphones.

I’m using the Zoom to add more microphones to a conference room with a built-in videoconference system. So I use the line out (TRS 3.5mm M/M cable to a Rhodes 3.5 to XLR adapter) then XLR into a room XLR jack in the wall.

The line out is set to -20dB so the Zoom output doesn’t over-drive the room audio system.

We picked up a radio station with varying intensity. Loud enough to be distracting during a videoconference.

Solution 1: Use the microphone out (instead of line out) turned down to Volume 50. So far so good.

Next attempt: Set the line out to -40db or more, hoping to get low enough not to propogate the interference.