Garmin 3600a Installation Instruction

The Global Positioning System (GPS) is a satellite-

based navigation system made up of a network of 

24 satellites placed into orbit by the United States 

Department of Defense. 
GPS was originally intended for military applications, 

but in the 1980s, the government made the system 

available for civilian use. GPS works in any weather 

conditions, anywhere in the world, 24 hours a day. 

There are no subscription fees or setup charges to use 

GPS. For more information refer to the Garmin Web 

 and also read the GPS Guide 

for Beginners, which can be found on the Web site at 

Initialize—the first time a GPS receiver orients itself 

to its current location and collects data. After the 

receiver is initialized, it remembers its location and 

acquires a position more quickly. 
Position—an exact, unique location based on 

geographic coordinates (Latitude and Longitude).

Route—a group of waypoints entered into the GPS 

receiver in the sequence you desire to navigate them.
Waypoint—a location you store in your GPS. It may 

be a checkpoint on a route or a significant ground 

feature, such as your campsite or favorite fishing spot. 

The United States and Canadian governments (among 

others) have set up Differential GPS (DGPS) stations 

to transmit correction signals. They are operational in 

coastal areas and on many navigable river systems. 
The DGPS system is available for use without a fee, 

but you do need additional equipment to receive 

DGPS signals; a beacon receiver compatible with the 

RTCM format sentences supported by your Garmin 

GPS is needed to use DGPS.
Refer to the United States Coast Guard’s Web site 

status of the differential stations. 

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 GPS