Garmin VHF 720 - Manual (Page 21)

15
GETTING
STARTED
Antenna &
Battery
Installation
Installing the Antenna
The antenna is an essential part of your VHF
720 and the unit should never be operated
without the antenna installed, as this may result
in damage to the unit. The antenna receives
signals best when held upright and is less effective
when positioned horizontally.
To install the antenna:
1. Carefully align the bottom of the antenna with the
threaded connector on the top of the VHF 720, and
screw it on the until snug against the seating
surface. (Figure 1)
Installing the Battery Pack
The VHF 720 requires six AA alkaline cell
batteries and will provide approximately 19 hours
of operating time under normal use. Rechargeable
alkaline, NiCad batteries or the optional GARMIN
NiCad Battery Pack may also be used. The battery
level indicator at the lower left corner of the unit
LCD display gives indication of battery capacity
in increments of 25%. If NiCad rechargeable
batteries are used in the battery tray the battery
gauge measurement will not accurately indicate
battery capacity. However, the optional NiCad
Battery Pack will be accurately indicated.
To install the batteries:
1. Lift up the D-Ring on the bottom of the unit and
unscrew it to remove the battery tray. A coin may
also be used to turn the screw. (Figure 2) Slide the
Battery Tray from the bottom of the VHF 720.
2. Observe the label on the tray and the molded-in
symbols to determine proper battery terminal
orientation.
3. Insert six AA alkaline cells into the battery tray.
Slide the retention strap over the center of the
batteries to keep them in place. (Figure 2)
Antenna
FIGURE 1
FIGURE 2
Battery Tray
“
Observe Battery
Terminal Orientation”
D-Ring
and Coin Slot
Battery
Retention
Strap