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GENERAL FEATURES
GPSFEATURES
•
128
x 64 Dot Pixel LCD Display
•
LCD
Backlight for Night Operation
- Mode IconsforGPS +
RADIO.
GPS ONLY and RADIO ONLY
- 8
Parallel Channel Satellite
Receiver
- GPS Partner
Localor
(GP
LOCATOR)
- Stores 10
Routes
with
Up
to 20Waypoinls Each
- Provides 5
Tracks
-
Map
and Pointer
Displays Provide:
Latitude and
Longitude
CurrenVAverageIMaximum Speed
Beamg and Heading
Date
and
Time
Sunrise and Sunset
GMRS FEATURES
- 15
GMRS Channels (7 Shared FRS)
- 38
Privacy
Codes (For
Each
Main Channel)
-
Built-In Hands-Free
VOX Capability
- Up to 5-Mile
Range
GENERAL FEATURES
•
Requires
4 AA
Alkaline Batteries
or
Type
NiMH or other
type
Rechargeable
Batteries
(Not
Included)
-
Foid-Down
GMRS
Antenna
- Swivel
Belt
Clip
THE GLOBAL POSITIONING SYSTEM (GPS) NETWORK
GPS is
a world-wide radio
navigation system
based
on a
group
of about 26
satellites
and their
associated ground
stations.
A
GPS receiver
uses
signals from the sateJlites
to
calculate its position
and
attitude.
The basis of
GPS operation is
triangulation,
and
the
receiver uses
the
travel
time
of
radio signals from the satellites to calculate its distance from each one
using
a
technique
called
"pseudoranging".
It
can then create lines of position.
The
satellites
transmit
two types of signals called
"CIA~
(coarse/acquisition) and·PO (precision)
.
The
latter are encrypted and can only be
used by
military GPS receivers. As
with
all other GPS
units
available to
the
public,
the GMA-GPS
makes
use of the
CIA
signals to establish position and
altitude.
The
accuracy
of a displayed position vanes with a number of factors including time.
4
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