Japan Radio Co. JLR-7900, Instruction Manual

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When connecting the cable attached to the equipment, do not bend it acutely, twist
it, or impart excessive force. Doing so sometimes causes cracks or damage to the
coating, resulting in fire or electrocution.
Do not install the sensor where there is excessive vibration.
Vibration may cause sensor failure.
Do not paint the sensor.
Doing so may result in reception problems.
Do not install the sensor where temperature exceeds 55 degrees Celsius and
there is covered with exhaust gas from funnel . Doing
so may result in equipment failure
or malfunction.
Use the fit cable, when connecting to the junction box.
The Junction box rubber gaskets (25 f Gland side) fit

10mm – 20mm cables.
Install the sensor where there are no obstacles, in order to ensure that GPS signals
can be directly received from satellites without interference or reflection of signals
from surrounding objects.
Whenever possible, select a place with the following characteristics.
If it is difficult to find an ideal site, select a place temporarily and install the equipment. Conduct a
test to make sure that the proper performance can be obtained and then fix the equipment in
position. If it is installed at an improper place, reception accuracy may be impaired.
CAUTION
1. An open space, which allows uniform reception of satellite signals.
2. Far away from any high power transmission antennas.
3. Outside radar beams.
4. Away from the INMARSAT antenna by at least 5 meters and outside
the INMARSAT beam.
5. Away from the antenna of a VHF transmitter and a direction finder
by at least 3 meters.
6. Away from a Magnetic Compass by at least 1 meter.
7. 3 meters or more away from amateur radio antennas.