MadSci Network: Engineering
Query:

Re: How does a TV antenna change the signals it receives into TV images?

Date: Sun Mar 3 08:12:01 2002
Posted By: Mike Harrison, , Freelance electronics consultant, White Wing Logic
Area of science: Engineering
ID: 1014866158.Eg
Message:

TV signals are radio waves typically in the frequency range of 200 to 
500MHz (1MHz = 1 million cycles per second). Each channel is transmitted 
on a different frequency. The antenna converts these radio waves into an 
electrical signal, which is sent to the TV. The TV then selects the 
required channel by ignoring all the signals except the one with the 
frequency corresponding to that channel.


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