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Quantum GX5500S Fixed-Mount VHF Radio


Extended Product Protection with PLUS Plan!

Model # 9393943 | Mfg # GX5500S
In stock online.

This full-featured, premium fixed-mount VHF radio includes all of the bells and whistles (literally) that a mariner might need. With an optional BTK-2 Bluetooth headset (sold separately), you can talk or listen from anywhere onboard.

A large alphanumeric keypad lets you easily enter MMSI numbers, and the oversized full dot-matrix display is versatile and easy to read. Plus, the Quantum GX5500S includes a 30 watt PA system, complete with preprogrammed foghorn with listen back, bell and whistle signals. Add a second station with an optional RAM3 mic, or listen to clear transmissions with the ClearVoice noise-canceling speaker mic.

  • Channel Selection: Large rotary knob
  • Controls: Three knobs, alphanumeric keypad
  • Mic Controls: PTT button, Channel up/down; 16/9 key
  • Scanning Modes: Programmable, Priority, Dual Watch
  • Weather Alert: Yes
  • Receiver Performance: Sensitivity: .30µV; Rejection: 80dB
  • NMEA Interface: NMEA 0183
  • Dimensions: 3 1/2"H x 9 1/8"W x 5 7/8"D
  • Waterproof Rating: IPX7
  • Warranty: Three-year waterproof, $65 flat rate

Quantum GX5500S Fixed-Mount VHF Radio

Amperage 0.5 Amps (Standby)
1.5 Amps (Receive)
5.0 Amps Transmit (High)
1.5 Amps (Low)
Color Black
Component Design Non-Component
Dimensions 9 1/8" Width x 3 1/2" Height x 5 7/8" Depth
Display Color Monochrome
Display Type Dot Matrix LCD
Features Weather Alert
Scanning Modes Programmable Scan
Priority Scan
Warranty Details Three Years Waterproof
Flat Rate

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by PowerReviews
Standard Horizon Quantum GX5500S Fixed-Mount VHF Radio

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

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(2 of 2 customers found this review helpful)


Standard Horizon Sets The Bar Again

By Jay

from Grand Rapids, Michigan

About Me Casual/ Recreational

Verified Buyer


  • Cleanest Reception
  • Clear Signal
  • Easy install
  • Easy To Use
  • Good Audio
  • Great with add on Mic
  • Lightweight
  • Rugged


  • None So Far

Best Uses

  • Boating
  • Emergencies

Comments about Standard Horizon Quantum GX5500S Fixed-Mount VHF Radio:

I replaced an older Standard Horizon basically because I needed to replace the Ram Mic and I also wanted access to all of the functions from the cockpit mic.

  • Primary use:
  • Personal

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