RX COALAS receiver by Coalas systems — high-performance onboard communication module

The RX COALAS receiver is a powerful and reliable receiver designed for stable signal reception over long distances in the 150–170 MHz range. Manufactured by Coalas systems, this device is intended for integration into drones and other unmanned platforms where communication range, high sensitivity, and flexible firmware configuration are critical. This solution is ideal for professional applications in UAV control and telemetry transmission.

Key features

• Operating range: 150–170 MHz
• Output power: up to 10 W
• Receiver sensitivity: -134 dBm
• Communication protocol: CRSF (UART)
• Antenna connector: IPEX
• Power supply: 5–12 V
• Dimensions: 23 × 20 mm

Functionality and compatibility

The receiver supports modern ImpactLRS and MILELRS firmware, ensuring flexible compatibility and update capabilities. The CRSF (UART) interface allows reliable integration of the module with flight controllers and external systems. The IPEX connector provides convenient antenna connection.

• Support for a large number of FHSS presets, available via LUA menu
• Customizable FHSS range and hop settings
• Fast encryption algorithms with a 256-bit key for control and telemetry protection
• TURBO mode to overcome interference and increase output power when needed
• Synchronous retuning between TX and RX presets for convenience and compatibility
• Telemetry disabled by default (radio silence mode) for silent operation
• Web-flasher support for firmware updates and management via web interface

Communication range

• Operational range: 80 km
• Maximum (total) range: 120 km

Compact dimensions (23 × 20 mm) combined with high performance make this receiver an excellent choice for integration into various types of unmanned systems — from amateur quadcopters to specialized professional platforms. Thanks to ImpactLRS and MILELRS support, users get extensive options for configuration, firmware updates, and compatibility with transmitters. TURBO mode and 256-bit encryption ensure stable and secure communication even in challenging, interference-prone environments.

Product category: Drones and quadcopters > Receivers

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