QPRO Technical Data Sheet
Document 1137-0901, REV A
24
7 QPRO Recommended Installation Guidelines
7.1
QPRO Mounting Recommendations
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Remember that it is best to connect the UBATT (-) to chassis ground rather than the (-) battery terminal.
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Remember that the input voltage range is 6-32 VDC.
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On the 40-pin connector positive power UBATT (+) is located on pins 1 and 2 and negative UBATT (-) is
Pins 3 and 4.
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In order to protect wires installed within the engine compartment or along the undercarriage make sure
all wires are wrapped with wire loom.
7.2
Antenna Recommendations
When selecting an Orbcomm antenna, make sure it is a 50 ohm 137-150.05 MHz antenna. Due to the fairly
wide frequency range used by Orbcomm (137 - 150 MHz), and the variety of installation factors and tradeoffs
between antenna size, cost, and performance, it is often not practical to achieve a VSWR of below 1.5:1
throughout the 137 - 150 MHz frequency range. See the User’s Guide User’s Guide to Q4000/QPRO,
Document #1135-4713 for more details on antennas.
