Rambler G4 GMRS Mobile Radio – Go Further, Stay Connected

Built for Off-Road Command & Clarity

From the deserts of Baja to the deep forests of the PNW, the Rambler G4 GMRS Mobile Radio delivers unmatched communication clarity, power, and range for overlanders and off-road explorers. With 46.8 watts of output and repeater capability, this compact GMRS unit outperforms legacy CB systems and integrates seamlessly into your rig with an AMPS-compatible mounting system.

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Designed for the Outdoors

The Rambler G4 is built for enclosed cab vehicles and designed to thrive in harsh off-road conditions. It features a user-friendly LED display, external speaker port, and high-clarity signal output for trail coordination and emergency response—ensuring your crew stays connected in terrain where cell signals disappear.

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Why Choose the Rambler G4

• 46.8 Watts of GMRS Power – Covers all GMRS channels (1–7, 15–22) and 8 repeater channels

• AMPLIFY 2.0 Mitsubishi Amplifier – Stable, drop-free power during long transmissions

• RIDEui Display System – Simple, intuitive LED interface

• Dual Monitor Mode – Monitor two channels simultaneously—ideal for convoy ops

• AMPS Mount Compatibility – Easily mounts with RAM or other AMPS-compatible hardware

• 259 Privacy Codes – Includes 51 CTCSS and 208 DCS for private comms

• Repeater-Ready – Supports split tones for repeater systems

• External Speaker Port – Connect to an intercom, headset, or 5-pin accessory

• Fully Adjustable Settings – Power, squelch, brightness, audio tones, and more

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Specifications

• Output Power: 46.8W

• Channels: 15 GMRS + 8 repeater channels

• Privacy Codes: 259 total (CTCSS + DCS)

• Interface: LED display w/ adjustable brightness

• Size: 5.5” W x 7” D x 1.5” H

• Monitor: Dual-channel listen

• Mounting: AMPS pattern (RAM-compatible)

• Connector Ports: External speaker, 5-pin accessory

• Hardware: Programmable preset buttons, HWY channel, backlit display

• Compatibility: GMRS radios by Rugged, Midland, Motorola, Uniden

• FRS Compatible: Channels 1–7 & 15–22

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What’s Included

• (1) Rambler G4 GMRS Mobile Radio

• (1) Magnetic Hand Mic

• (1) Universal Mounting Bracket

• (1) DC Power Cable with Inline Fuse

• (1) UHF Stealth Antenna

• (1) 15 ft Coax Cable with 3/8 NMO Mount

• (1) NMO Bar Mount Antenna Bracket

• (1) Ripstop Hand Mic Bag

• (1) Rambler Adventure Patch

• (1) Hardware Pack

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Why GMRS Over CB for Off-Road Communication

GMRS delivers stronger transmission power, cleaner audio, and repeater capability. CB radio is static-prone, range-limited, and increasingly obsolete for serious off-road and overland use.

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Frequently Asked Questions

Q: Is the Rambler G4 repeater-compatible?
A: Yes. It supports split-tone configuration for repeater networks.

Q: Does it work with my existing GMRS radios?
A: Yes. Fully compatible with all GMRS radios and FRS on shared channels.

Q: Is it waterproof?
A: No. The G4 is optimized for enclosed cab use. For waterproof options, see the Rambler G1.

Q: Can I use this with an intercom or headset?
A: Yes. The external speaker port supports 5-pin accessories via an optional jumper cable.

Q: Do I need a license to use this?
A: Yes. A GMRS license is required but easy to obtain and covers your entire household.

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Stay Connected, No Matter Where You Roam
The Rambler G4 is built to keep your crew talking when the grid goes quiet. Reliable, powerful, and field-proven—it’s the communications upgrade your rig deserves.