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Dr. No
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Joined: 27 Jan 2002
Posts: 23

Post fm or am Reply with quote
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 ?
Tue Mar 08, 2005 4:36 am View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
I think everyone uses FM for audio.

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Marko - PCS Electronics
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Tue Mar 08, 2005 8:32 am View user's profile Send private message Visit poster's website
frankh19
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Joined: 04 Mar 2004
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Location: East King County, WA
us.gif

Post Reply with quote
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.

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Frank
East Hill Radio
Tue Mar 08, 2005 1:16 pm View user's profile Send private message Visit poster's website
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
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.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Tue Mar 08, 2005 7:22 pm View user's profile Send private message Visit poster's website
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