And WHY would you go digital on a car radio? How many
HUNDREDS OF MILLIONS of radios would have to be
replaced? The shift to the new TV format in Feb. 2009
is only going to work because so many are on CABLE
--- Barry Garratt [EMAIL PROTECTED] wrote:
IBOC is a method whereby both analog and digital
signals are transmitted on
the same frequency.
Additional digital subcarriers are carried on the
normal AM or FM analog
signal. They extend beyond the normal
channel bandwidth though so there is an increased
chance of adjacent channel
interference.
I think the plan in the future is to eliminate the
analog portion and have
all stations strictly digital.
_
From: digitalradio@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of John Becker, WØJAB
Sent: Monday, November 12, 2007 5:25 PM
To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] Digital Radio - Well
Broadcast
This has been going on for over 25 years that I know
of.
But I don't think it was digital. AM and FM radio
had a
service for the blind that was a sub carrier. Sounds
very
close to it.
At 06:29 PM 11/12/2007, you wrote:
In the U.S. the FCC has approved a system called
IBOC (In-Band On Channel)
to add digitial audio to existing AM and FM
stations. In broadcast radio,
there isn't the luxury of unused channels that allow
every station to have
one analog and one digital transmitter. I haven't
seen any terrestrial
digital radio receivers in stores yet.
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