RadioMaster Dual-Band 2.4GHz / Sub-G 900MHz Antenna
by RadioMaster

The RadioMaster Dual-Band 2.4GHz / Sub-G 900MHz Antenna is a high-performance replacement dipole antenna engineered for ExpressLRS Gemini and Gemini-X dual-band systems. Operating simultaneously across both 2.4GHz and Sub-GHz (868MHz / 915MHz) frequencies, this antenna enables dual-frequency signal transmission and reception to maximize link stability, penetrate obstacles, and reduce packet loss in high-interference environments.

Built with a flexible, high-flex coaxial stem and reinforced center molding, the antenna provides 360-degree omnidirectional radiation coverage for FPV drones, long-range aircraft, and commercial UAVs. Equipped with standard IPEX / U.FL connectors, it offers direct snap-on compatibility with RadioMaster dual-band receivers (such as the RP4D series) and dual-band transmitter modules.

Key Features

• Dual-Band Frequency Tuning: Simultaneously covers 2.4GHz and Sub-GHz 868MHz/915MHz bands for ExpressLRS Gemini / Gem-X dual-band protocols.

• Omnidirectional Coverage: Delivers consistent 360° signal reception and transmission to eliminate dead zones during acrobatic or long-range flight.

• IPEX / U.FL Snap-On Connector: Micro-connector design provides secure, low-loss connection to dual-band ELRS receivers and internal RF modules.

• Durable Injection Molding: Reinforced central junction protects delicate coaxial solder points against impact, strain, and vibration.

• Lightweight & Flexible Stem: High-flex coaxial cable allows easy routing on drone carbon fiber frames and micro airframes without adding unnecessary weight.

Technical Specifications

• Brand / Manufacturer: RadioMaster

• Model Identifier: Dual-Band 2.4GHz / Sub-G 900MHz Antenna

• Supported Frequencies: 2400 MHz – 2500 MHz & 868 MHz / 915 MHz (Sub-G)

• Polarization: Linear / Omnidirectional

• Connector Type: IPEX1 / U.FL (or IPEX4 dependent on receiver variant)

• Compatibility: RadioMaster RP4D, Gemini-X receivers, and 2.4G/900M dual-band ELRS modules

• Cable Construction: Flexible High-Shielding Coaxial Wire

• Net Weight: ~1.8 grams

What Is Included

• (1) RadioMaster Dual-Band 2.4GHz / Sub-G 900MHz Antenna