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fm or am

Posted: Tue Mar 08, 2005 4:36 am
by Dr. No
do TV channels 4, 5, & 6 in north america run the audio portion in am or fm format?

What about UHF TV is the audio fm or am ?

Posted: Tue Mar 08, 2005 8:32 am
by pcs
I think everyone uses FM for audio.

Posted: Tue Mar 08, 2005 1:16 pm
by frankh19
In the U.S., the audio for both VHF and UHF TV is FM with 25 khz deviation. The picture is a reduced carrier AM using a single sideband.

Posted: Tue Mar 08, 2005 7:22 pm
by pcs
I think everyone is using the same for VHF and UHF, doing
otherwise would complicate receiver unnecessarily and there's
no real advantage to that.