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Section 7 - Install the Explorer 721/725
7-1 Installation Options
There are two ways to install the radio. You can choose:
a deck or overhead mounted gimbal installation. The reversible mounting gimbal is fixed to a
•
suitable site and the radio is placed into it. The radio can be removed for storage and the viewing angle
can be adjusted.
a recessed installation. The radio is recessed into a cavity cut into a bulkhead. The radio fixture is
•
permanent and the viewing angle cannot be adjusted.
NOTE: An optional handset with a 9.8` (3 m) docking cable included can be purchased and connected to
your Explorer 721 base unit to give second station operation and intercom capability.
7-2 Location Requirements
Please check these BEFORE doing any cutting or drilling.
Whichever installation method you choose, ensure that the chosen location:
• is at least 3' (1 m) from the antenna
• allows easy connection to (at least) a 10 Amp fused 13.6 V DC electrical source and the antenna
• is at least 1.5' (45 cms) from the compass to avoid creating magnetic deviation of the compass
during radio operation
• has a suitable space close by for installing the microphone bulkhead mount
• provides easy access to the controls on the front panel
• provides reasonable access to the wiring at the back of the radio
• provides enough room to fix the DSC warning label (721/725 US only).
The VHF721/725 has a large FSTN LCD
screen with an optimum viewing
angle of approx. +/-20 deg. Ensure the
chosen location provides a suitable
view of the display. Ideally, the user
should be directly in front of the
display or no more than +/-20 deg
from the front of the display.
Note: If unsure, temporarily power
up the radio and check for a suitable
location.
Northstar Explorer VHF Series: 721/725 Operation and Installation Manual
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