SKU: 3256804197618985 Category:


  • Brand Name: RETEVIS
  • Battery Capacity(mAh): N/A
  • Origin: CN(Origin)
  • Waterproof / Water-Resistant: IP67
  • Maximum Range: 10km-50km
  • Model Number: RM20
  • Is_Display: Yes
  • Walkie Talkie Type: Car
  • Output Power(w): 10w-25w
  • Material: Other
  • Storage Channel: 88CH
  • Frequency Range: TX: 156.025~157.425MHz;RX: 156.025~163.275MHz
  • Dimensions: 153*67*152mm
  • Certification: CE
  • Certification: FCC
  • Modulation: FM (16K0G3E), DSC (16K0G2B)
  • Max. Frequency Deviation: ±5 kHz
  • Audio Harmonic Distortion: ≤10 %
  • Weight: 742g (Hand MIC Included)

RM20 VHF 88 Channels 25W IP67 GPS NOAA Fixed-Mount Class D DSC Marine Transceiver (USA/INT/CAN)


This is a small, loudvoice, and easy-to-install marine transceiver, Comply with ITU-R M.493-13 Class D DSC (digital selective calling), supports the latest marine channel standards and DSC protocol standards, features DSC Test Calling and Automatic Position Polling ,There are 11 categories of DSC distress calls, and all DSC calls have 3 security categories, loudvoice,weather channel with weather warning,IP67 submersible waterproof rating ,Easy to operate icon and menu system ,Built-in GPS, GLONAS, SBAS Satellite-based Augmentation System (WAAS/EGNOS/MSAS/GAGAN),And support multiple NMEA format transmission,Very suitable for ocean navigation.

Main functions:

  • External speaker with 3.5mm pin

  • Build-in GPS Latitude and Longitude and Time

  • IPX7 Waterproof Construction (1m Depth of Water for 30 Minutes)

  • Vibration Water Draining Function

  • Weather Channel Alarm

  • Dual/Tri-watch Functions

  • Normal Scan and Priority Scan

  • DSC Call Reception and Transmission Records Can be Queried

  • Standard NMEA 0183

  • Full Dot Matrix Display

  • Channel Number Display Digits Selectable: 3 Digits(01B)4 Digits(2001)

  • Simple and convenient operation

  • Support Latest Marine Channel Standards and DSC Protocol Standards.

  • Emergency switch 16/9 channel

  • High/low power switching

General Specifications:


Frequency Range

TX: 156.025~157.425MHz

RX: 156.025~163.275MHz


FM (16K0G3E), DSC (16K0G2B)

Frequency Stability


Operating Voltage

DC13.8V (±15%)

Operating Temperature


Antenna Impedance


Dimensions (W×H×D)



742g (Hand MIC Included)


Receive Sensitivity

≤0.22 µV

Squelch Sensitivity

≤0.22 µV

Adjacent Channel Selectivity

≥70 dB

Spurious Response Rejection Ratio

≥70 dB

Intermodulation Rejection Ratio

≥70 dB

Max. Receive Current

≤1.5 A

Audio Output Power

≥4.5 W (10% )

GPS Signal Format

NMEA 0183-2.0

Output Impedance



Output Power

25 W 1W

Max. Frequency Deviation

±5 kHz

Spurious Emissions

≤-70 dB (H ),≤-56 dB (L )

Adjacent Channel Power

≥70 dB

Audio Harmonic Distortion

≤10 %

Current Consumption

≤5.5A (H),≤1.5A (L)

Input Impedance


Package Details:

  • 1 x  Marine Transceiver

  • 1 x  HandheldMicrophone

  • 1 x  Mounting Bracket

  • 1 x  DC Power Cable

  • 1 x  User Manual