Stacks Image 342
Startup sequence 1
Stacks Image 326
Startup sequence 2
Stacks Image 317
Startup sequence 3
Stacks Image 308
Startup sequence 4
Stacks Image 299
Satellite status screen
Stacks Image 290
Position screen
Stacks Image 281
Navigation data screen
Stacks Image 272
Customized navigation data screen
Stacks Image 131
Waypoint displayed
Stacks Image 2665
Goto navigation
Stacks Image 2630
Route displayed
Stacks Image 2595
Sunrise / sunset
Stacks Image 2560
MOB navigation
Stacks Image 2525
Choose operation level
Stacks Image 2490
Time screen
Stacks Image 2455
Alarm clock
Stacks Image 2420
Anchor watch alarm
Stacks Image 2385
Stacks Image 2350
Trip planning
The GPS 50 was the first real handheld manufactured by Garmin in 1991. It was meant to be a marine navigation unit. It has a special alphanumeric / numeric display with indicators. The user could choose between a basic and an advanced operational level. The basic level includes only simple navigation functions. The advanced level adds routes, trip planning, alarms and other features to the navigation menu. The GPS 50 introduces customizable data fields on the navigation screen. A graphic cross track display shows if the user is on track.
The first version of the GPS 50 has a grey case with blue silicone gasket. Later versions have a black case with a black rubber gasket.
The GPS 50 can store 250 waypoints. Nine routes with up to nine legs are possible. There is a timer, an alarm clock and an anchor watch alarm included. The GPS 50 can calculate sunrise and sunset at a waypoint position. A data output allows communication with other devices. A man overboard function allows quick storing and navigating to the actual position. The GPS 50 displays up to nine nearest waypoints.
The date can't be edited. This causes the unit to remain in the GPS-week cycle of its production if data was lost. Sunrise and sunset calculated is wrong in this case.
Initialization is automatic but can be accelerated by entering an initial position. The receiver is a single channel multiplexer tracking up to eight satellites.
The unit can be operated by four AA batteries, a nicad pack or with external power. A swivel mount allows fixed operation. The antenna can be detached and used with an extension cable.
Stacks Image 144
Stacks Image 164
Stacks Image 162
Stacks Image 160
Stacks Image 158
Stacks Image 156
Stacks Image 168
Stacks Image 166
Stacks Image 2710
Stacks Image 2702
Stacks Image 2694
Stacks Image 2686
The GPS 50 searches for a satellite to load the almanac. It starts with PRN 1, PRN 2 and so on. When ephemeris data for a satellite is present the GPS 50 starts searching for signal.

250 waypoints
9 routes
Sunrise / sunset calculation
Distance / bearing between two waypoints
Alarm clock
Anchor watch alarm
Data output
100 map datums
Detachable quadrifilar antenna
External antenna connector
Alarm beeper
Dimensions: 160mm x 112mm x 37mm
Weight: 460 g