Connecting the antennas
If
your
model
shipped
with
2
cellular
antennas
you
should
assemble
the
antennas
by
screwing
the
long
metal
wire
into
the
base.
You
should
install
those
antennas
or
suitable
alternative
antennas
into
the
SMA
connectors
labeled
Main
and
Aux
shown
in
your unit did not come with cellular antennas or if you want to use your own cellular
SMA
Comment
If
antennas, they should meet the specifications shown in Table 1 – Antenna
Specifications. If you are using GPS, screw the GPS antenna into the GPS
connector.
Main
and
Diversity
Antenna
Specification
Requirement
Frequencies
supported
850
Mhz
Band
(824
‐
894
MHz)
encies
cover
all
possible
.
If
900
Mhz
Band
(880
‐
960
MHz)
1800
Mhz
Band
(1710
‐
1879
MHz)
1900
Mhz
Band
(1850
‐
1990
MHz)
2100
MHz
Band
(1920
–
1980
and
2110
‐
2170
MHz)
These
frequ
frequencies
supported
by
the
modem
you
are
sure
you
are
not
using
certain
frequencies,
then
you
may
omit
them
when
selecting
your
antenna.
Gain
≤
2.5
dBi
Polarization
Vertical
Radiation
Pattern
Omni
‐
directional
Impedance
50
Ω
VSWR
≤
2:1
Antenna
≥
Efficiency
≥
50%
Can
be
40%
for
less
than
960
MHZ,
≥
50%
for
greater
than
1710
MHz
GPS
Antenna
Specification
Requirement
Frequencies
supported
1574.42 MHz–1576.42 MHz
Polarization
RHCP
(Right
‐
Hand
Circular
Polarization)
Radiation
Pattern
re
Directional,
point
to
the
upper
hemisphe
Impedance
50
Ω
VSWR
≤
1.5:1
Antenna
Efficiency
r
both
the
efficiency
and
the
upper
hemisphere
efficiency
≥
50%
fo
Table 1 – Antenna Specifications
Connecting the power cube to the modem
9