ELRS Receiver 433 MHz (150 - 700 MHz) + 2.4 GHz (1.7-2.7 GHz) LR1121 LR1121 Generic ESP32C3 Aeronetix buy in Ukraine AstreiaTactical

📝 ELRS Receiver 433 MHz (150–700 MHz) + 2.4 GHz (1.7–2.7 GHz) LR1121 ESP32C3 Aeronetix

The ELRS receiver based on LR1121 and ESP32C3 Aeronetix is designed for UAV control systems using the ExpressLRS protocol. It operates in two frequency ranges: 150–700 MHz and 1.7–2.7 GHz, allowing use for long-range control links as well as higher data rate systems. The receiver is a modified analogue of the Radiomaster XR3 and can run ExpressLRS, MilELRS and other modified ELRS firmware. It is built on the LR1121 transceiver and ESP32C3 microcontroller.

🫡 We are a team of veterans

From practical ELRS system experience, LR1121 receivers are universal because they can operate on low frequencies for long range and on 2.4 GHz for speed and link stability. Such receivers are often used in reconnaissance and strike UAVs. It is important to properly flash the base frequency and configure the system before use.

⚙️ Specifications

Parameter	Value
Product type	ELRS Receiver
Module	LR1121
Controller	ESP32C3
Operating frequencies	150–700 MHz / 1.7–2.7 GHz
Protocol	ExpressLRS
Firmware	ELRS / MilELRS / modified
Antenna connector	J1 (150–700 MHz), J2 (1.7–2.7 GHz)
Dimensions	25 × 19 mm
Firmware target	Generic ESP32C3 LR1121 900Mhz RX
WiFi SSID	Expresslrs RX
WiFi Password	expresslrs

💬 Comment / comments

The receiver is built on the LR1121 transceiver which supports a wide frequency range and is used in long-range UAV control systems. It can operate in 433/868/915 MHz bands as well as 2.4 GHz depending on firmware and configuration. It is a universal solution for ELRS systems. Base frequency is not flashed and must be configured during firmware flashing.

🎯 Who it is suitable for

Military units, UAV operators and ELRS system users, for building long-range drone control links. The receiver supports operation in multiple frequency ranges. This allows building flexible control systems.

FPV drone operators, using ExpressLRS systems. The receiver can operate on low frequencies for range or 2.4 GHz for higher data rate. It is a universal solution for different drone types.

Engineers and developers, who build UAV control systems. The receiver supports different firmware and configurations. It can be used in experimental or operational systems.

Teams developing repeater or communication systems, for building complex UAV communication systems. LR1121 allows operation across multiple frequency bands. This enables multi-band communication systems.

Firmware here:
https://github.com/mishadesh/ExpressLRS/tree/aeronetix_lr1121

Target: Generic ESP32C3 LR1121 900Mhz RX

Access point parameters:
SSID: Expresslrs RX
password: expresslrs

Instructions for updating the firmware:
https://www.expresslrs.org/software/updating/wifi-updating/

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ELRS Receiver 433 MHz (150 - 700 MHz) + 2.4 GHz (1.7-2.7 GHz) LR1121 LR1121 Generic ESP32C3 Aeronetix

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SKU: 7705

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$32

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