100% Canadian

All prices are in CDN dollars.

1-800-585-9331

April 16, 2026: Due to the weather conditions today in Calgary, Canada Post will not be picking up any packages. Orders sent via Canada Post will be leaving our store tomorrow, weather permitting. 

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Garmin GSD 28 Sonar Module Specs

General

Case material Fully gasketed, aluminum housing, steel back panel, plastic access panel
Physical dimensions 10.7″ × 14.4″ × 4.0″ (27.06 cm × 36.66 cm × 10.1 cm)
Weight 14.13 lbs (6.4 kg)
Water rating IPX7
Temperature range From 5° F to 158° F (from -15° C to 70° C)

Electrical Features

Power input 10-32 V
Power usage 120 W maximum
Fuse 15A

Sonar Features

Frequencies supported Dual channel CHIRP: 25-250 kHz (transducer dependent)
Transmit power 300W–3kW rms (transducer dependent)
Maximum depth 10,000 ft (3,048 m)
xCHIRP yes
Rapid return yes

Connections

Garmin Marine Network Ports 1 (Garmin BlueNet)
Sonar connections 2 bare wire

In the Box:

  • GSD 28
  • Power cable
  • Garmin BlueNet™ marine network cable (6 ft) with legacy network adapter
  • Field installable adapter kit for the Garmin BlueNet network
  • Mounting hardware
  • Documentation