|
3 Mhz to
30 Mhz
and
comprises
amateur
radio,
short
wave
broadcasters
among a
host of
others.
Largely
becoming
superseded
by
satellite
transmissions.
Radio
frequencies
within
the
range of
3,000 to
30,000
kilohertz.
HF radio
is known
as
shortwave.
High-Power
Satellite
Satellite
with 100
watts or
more of
transponder
RF
power.
Hour
Angle
Steering
direction
of a
polar
mount.
An angle
measured
in the
equatorial
plane
between
the
antenna
beam and
the
meridian
plane.
Hub The
master
station
through
which
all
communications
to, from
and
between
micro
terminals
must
flow. |
