Electro-magnetic interference from a desktop computer, and an at&t; cordless phone handset cl82301 when held near the internal ferrite antenna on the back right of a 13-year-old boombox listening to the am broadcast band. Recorded 2 years ago so i forget where i was listening. Recorded with goldwave from line-in. You hear emi from the computer at first, then i bring the phone on standby near the radio and you hear a series of nearly pure tones. The phone comes on and you hear a distorted dial tone. I move the phone away from the radio for a few seconds and you hear the computer again, then i bring the phone near and you hear a distorted busy signal. I disconnect and the phone continues sending to the base for a few seconds so you just hear a hum, then the idle tones are heard, then the computer noise as i remove the phone.
著者: Kbclx
