TV or display buzz
Broadband noise from plasma TVs and some displays or their power supplies.
ModeTV or display buzz
FamilyInterference
Audio exampleComing
What does it sound like?
Plate 72Interference
A buzzy hash with a steady low rhythm, starting and stopping when the screen is switched on and off.
Field marksStarts and stops with the screenA buzzy hash with a low rhythm
Who uses it?
Not a station: a screen in your home or a neighbor's.
Where and when can I hear it?
Across shortwave, especially lower frequencies.
Easily confused with
- Power-line noise: power-line noise doesn't follow a screen being switched on