The EMAX Aeris ELRS TX915 (915MHz) Transmitter JR Module is a long-range, high-power transmitting unit designed to fit into standard JR bays of compatible radio transmitters. Operating on the open-source ExpressLRS protocol in the sub-GHz 915 MHz band, this device provides deep signal penetration through terrain and vegetation obstacles, minimal latency response, and high resistance to electronic countermeasure environments.

The module configuration features an integrated graphic OLED display for rapid setting adjustments without connecting to a computer, as well as an active cooling system with a fan that protects the board from overheating during continuous operation at boundary power modes up to 2W. The device can be powered either directly from the radio transmitter or via a dedicated XT30 connector for an external battery pack, which reduces the load on the main transmitter battery.

🫡 We Are a Team of Veterans

We evaluate the EMAX Aeris ELRS TX915 (915MHz) Transmitter JR Module as an uncompromising solution for missions where the range and penetration capacity of the radio link are matters of aircraft survival. Modern aerial reconnaissance conditions demand stable communication in lowlands, behind tree lines, and within active frequency jamming zones. The 915 MHz band combined with the ELRS protocol provides that exact link confidence that standard 2.4 GHz systems fail to deliver. The ability to ramp up power to 2W with external power via XT30 allows for maintaining control over the aircraft at maximum distances when every kilometer of penetration matters.

⚙️ Technical Specifications

Parameter	Value
Model	EMAX Aeris ELRS TX915
Operating Frequency	915 MHz
Communication Protocol	ExpressLRS (ELRS)
Maximum Output Power	Up to 2W (2000 mW)
Form Factor	JR Module (Micro)
Screen	Graphic OLED, 0.96 inch
Cooling	Active (fan + heatsink)
Interfaces	RGB backlighting, 5-way joystick
Antenna Connector	RP-SMA female
Input Supply Voltage	5–12V DC
Additional Power Input	XT30 connector (recommended for high power)
Firmware Upgrade	Via Wi-Fi or USB-C

Commentary / Comments

The primary advantage of the EMAX Aeris ELRS TX915 (915MHz) Transmitter JR Module lies in its ability to consistently output true 2W of power without frequency sagging due to its advanced heatsink and active airflow. The 5-way joystick and bright screen allow operators to change packet rates, power levels, or put the module into binding mode right at the launch position, which is critical in time-sensitive situations.

The presence of the XT30 port for connecting an external 2S-3S battery removes the risk of sudden radio transmitter drainage at the most critical moment of flight. The metal RP-SMA connector guarantees secure retention of a Moxon or Yagi antenna, standing up to constant assembly and disassembly cycles during field redeployments.

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EMAX Aeris ELRS TX915 (915MHz) Transmitter JR Module

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SKU: 8135

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