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This is
the
Medium
wave
Broadcast
band
(also
known as
the "AM"
broadcasting
band).
The
channel
separation
is 9 kHz
in
Europe,
Africa
and
Asia,
and 10
kHz in
the
Americas.
In the
United
States,
the
frequencies
of 1230,
1240,
1340
1400,
1450,
and 1490
kHz are
allocated
only for
local
stations
(low
power)
and you
may
simply
hear a
'rumble'
on those
frequencies,
esp. at
night
due to
the
heavy
congestion.
Many
powerful
stations
in South
America
use a
non-standard
frequency
step in
this
band. |
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