Electro-magnetic interference from an AT&T; cordless phone handset CL82301 charging in the charger when held and moved around near the internal Ferrite antenna on the back right of a 13-year-old boombox. The radio was set to 580 KHZ WIBW from Topeka. You can hear the station in and out as the signal from the phone waxes and wanes as I move it around the back of the radio. Recorded with Goldwave from line-in. You hear the signal to the base unit which is a low pulsed buzz, as well as the processor noise as it's charging. It's a single tone as opposed to the shifting tones when it's on standby.
AT＆T無線電話充電器與駐地AM Radio.wav
聲道：2
類型：wav
male、voice、wibw、announcer、580khz、human、radio、radio-interference、am-radio、buzz、t、EMF、EMI、glitch、beep、electro-magnetic、pulse、interference、digital、hum、electronic、tone、noise、cordless-phone
男、語音、WIBW、播音員、580khz、人的、無線電、無線電干擾、上午無線電、蜂鳴器、Ť、EMF、一個微笑、毛刺、嘟、電磁、脈衝、干擾、數字、哼、電子、音、噪聲、無繩電話
資料來源：freesound ( https://freesound.org )