TELECOM Digest OnLine - Sorted: Cellphone Technical Question

Cellphone Technical Question

Michael Muderick (
Thu, 16 Mar 2006 17:57:00 -0500

If I leave my cell phone near my computer speakers I will hear
occasional buzzing, clicking, etc. Before the phone begins to ring, I
hear a dah..dah.daahhhhh. I know this is RF interference being picked
up by the amplifier in the speaker. If one were to record this sound
with a microphone at 11 or 22Khz, would it be possible to obtain any
information (usable signal) from the recorded audio?


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