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2 votes

What is this pulsating signal?

I know the sound well; it is a control/data channel for a P25 or EDAC trunking system used by police, sheriffs, and federal law enforcement. Power Line RFI noise, now that is funny. You must be a ham.
Dereck's user avatar
  • 464
2 votes

What is this pulsating signal?

That is almost certainly some kind of digital transmission. Someone with suitable software could decode it and listen to it. It could be voice or data. It's apparently too narrow for a video signal. ...
Mike Waters's user avatar
  • 7,978
1 vote

Why does RFI demodulate to a buzz sound?

This is a more than a bit of speculation, but it's the best I can do without having a set of screwdrivers, disregard for the integrity of your personal possessions and an oscilloscope in your home ...
Marcus Müller's user avatar

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