Lowrance Simrad GS25 User Manual

60 mm
3 mm
19 mm
Supplied parts
Antenna mounting location
X X
X
X
Electromagnetic Interference
0.5 m (20”) Min 0.5 m (20”) Min
2 m (6 ft) Min
RADAR
Magnetic Field
Radio Transmitter
Surface mount the antenna Surface mount: Surface cable run
1
4
3
5
5
2
2
Lowrance Point-1 Simrad GS25 B&G ZG100
X 2 X 2 X 2 X 2 X 2 X 2
NMEA 2000 Drop
Cable 4.5 m (15 ft)
NMEA 2000 Drop
Cable 1.8 m (6 ft)
Attached NMEA 2000
Drop Cable 1.2 m (4 ft) +
NMEA 2000 Drop Cable
4.5 m (15 ft)
Surface cable run
1 2
3
6
Pole mount (external cable)
5
4
1
3
4
5
2
Pole mount (Internal cable)
X
*988-10439-002*
ENGLISH
GPS Antenna
With built-in Heading
Sensor
Installation Guide
www.bandg.com | www.simrad-yachting.com | www.lowrance.com

Lowrance Simrad GS25 Specifications

General

Type	GPS Antenna
SBAS Support	Yes
Update Rate	10 Hz
Operating Voltage	9-32 V DC
Water Resistance	IPX7
Communication	NMEA 2000, NMEA 0183
Channels	72
Frequency	L1, L2
Dimensions	90mm x 90mm x 50mm

Summary

Supplied Parts and Surface Mounting

Surface Mount Antenna Installation

Guide for installing the antenna using the surface mount method.

Surface Mount Cable Run

Instructions for routing the cable when using a surface mount.

Antenna Mounting Location

Recommendations for optimal antenna placement to avoid interference.

Pole Mount External Cable Installation

Steps for installing the antenna on a pole with an external cable.

Pole Mount Internal Cable Installation

Steps for installing the antenna on a pole with an internal cable.

Specifications and System Integration

General Specifications

Details receiver type, channels, update rate, and accuracy metrics.

Connection and Communication Protocols

Information on NMEA 2000 connectivity and relevant PGNs.

Heading Sensor Calibration

Procedure for calibrating the built-in heading sensor for accurate overlay.

Heading Sensor Application

Describes the use of the heading sensor for chart stabilization and radar overlay.