This is
the
80-meter
ham
radio
band.
The 3500
to 3750
kHz
range is
used for
CW and
RTTY
communications,
and the
rest of
the band
is used
for LSB
voice.
In the
United
States,
this
band is
known as
the
80/75-meter
band,
and ham
use is
allocated
from
3500 to
4000
kHz.
