1200 Lake Hearn Drive, Suite 500, Atlanta, GA 30319 | T: 678.762.6800 | F: 678.762.6805 | nextraq.com
Introduction
Following the purchase of VT-4225, there will be several factors to consider prior to its installation,
including placement of the VT-4225 hardware and the selection and placement of the antenna(s).
This installation guide is designed to provide instructions for the installation of the VT-4225
hardware for use with the NexTraq™ Fleet Tracking platform. This document is designed for new
and experienced installers and their managers to anticipate and answer questions associated with
VT-4225 installations.
VT-4225 Hardware
The VT-4225 consists of a nylon plastic engineered housing containing the electronic components.
Additional equipment includes a separate power connection cable and a modular cellular GPS
antenna.
The VT-4225 is powered by an external power supply; vehicle power (12-24 volts). The device is
designed to be installed in the vehicle’s cab. The unit is not waterproof or dustproof, nor is it
designed to be placed near or on heat-generating sources (ex: in the engine compartment, attached
to the heater).
Antenna Installation Types
Glass Mount
When mounting the antenna, it should be oriented with the top section facing the sky.
NOTE: The antenna specifies which side should face the sky.
The glass mount provides the best reception for cellular and GPS. It is recommended that the
antenna have a view of at least 40 percent of the sky. The antenna should not be mounted behind
windscreens, ladder racks or other radio transmission antennas.
Dashboard Mount
The antenna should be mounted on the dashboard with as much of a clear view of the sky as
possible. When mounting the antenna, it should be oriented according to the instructions on the
antenna.
Antenna placement is optimal underneath a removable plastic cover near the windshield on the top
of the dashboard. If no removable cover is present, then removing the front dash bezel, the radio or
instrument cluster to gain access under the dashboard is a good alternative position.
Placement behind the plastic A pillar cover works well, but should be a second choice.
If the dashboard is metal and/or does not have enough clearance behind the A pillar, mount the
antenna at the top center of the windshield behind the rear view mirror or at the top right corner of
the windshield.
