13
Product Install Guide – M4xx Series
03/11/22 | V1.9.9
GPSGPS
GSMGSM
15”
40 cm
15”
40 cm
15”
40 cm
When possible, to reduce interference,
the M41x should be placed atleast
15 inches/40cm) from any electrical
equipment.
INTERFERENCE
The GSM antenna in the M41x is located
internally by the connectors on the side with
the label.
GSM ANTENNA
The GPS antenna in the M41x is located
internally by the LEDs on the side with the
label.
GPS ANTENNA
The M41x, the OBU must NEVER be mounted
behind or beneath any metal structures. This
will obstruct the antennas.
The side with the label should always face up
or towards the inside of the vehicle. See below
illustration.
POSITIONING GUIDELINES
Click here for the M41x recommended
positions appendix.
Internal antennas (M41x)
11. Antennas
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