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iFlight ExpressLRS 100mW ELRS Dualband Receiver (2.4GHz/868MHz/900MHz) TCXO LR1121 ELRS 3.5.3

iFlight ExpressLRS 100mW ELRS Dualband Receiver (2.4GHz/868MHz/900MHz) TCXO LR1121 ELRS 3.5.3

iFlight

$28.32 USD
$28.32 USD
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Overview

The iFlight ExpressLRS 100mW ELRS Dualband Receiver is an ExpressLRS receiver with dualband support across 2.4GHz, 868MHz, and 900MHz, and includes a TCXO (temperature-compensated crystal oscillator) for improved frequency stability. It is designed for compact integration and supports single-antenna or dual-antenna (diversity) configurations depending on the receiver option selected.

Key Features

  • TCXO technology to minimize frequency deviation for stable performance.
  • Multi-band operation: 2.4GHz, 868MHz, and 900MHz (model dependent).
  • Compact form factor for space-sensitive builds.
  • 100mW Dualband RX (single antenna): SUR 0.8 connector.
  • 500mW Dualband RX (single antenna): aluminum heat sink, SH1.0 connector, telemetry power up to 500mW.
  • 100mW Dualband Diversity RX: supports GemX, Gemini, and True Diversity RF modes; shielded design; SH1.0 connector. (GemX requires a high-frequency transmitter module supporting GemX mode.)

Specifications

ELRS 100mW Dualband RX

MCU ESP32 C3
RF LR1121
Frequency Bands 2.4GHz, 868MHz, 900MHz
Receiver Type Single antenna
Telemetry power 100mW (20dBm)
LNA N/A (868/900MHz) / YES (2.4G)
Dimension 18*11mm (±0.2)
Weight 0.8g (±0.5g)
Lua Script iF DB 100mW RX
TCXO Yes
Firmware Version ELRS 3.5.3

ELRS 500mW Dualband RX

MCU ESP32 C3
RF LR1121
Frequency Bands 2.4GHz, 868MHz, 900MHz
Receiver Type Single antenna
Telemetry power 100-500mW (20-27dBm)
LNA YES
Dimension 14*25*4.3mm (±0.5)
Weight 1.9g (±0.5g)
Lua Script iF DB 500mW RX
TCXO Yes
Firmware Version ELRS 3.5.3

ELRS 100mW Dualband Diversity RX

MCU ESP32-Pico D4
RF LR1121
Receiver Type GemX
Telemetry power 100mW (20dBm)
LNA N/A (868/900MHz) / YES (2.4G)
Dimension 24.3*18.5*6.5mm (±0.5)
Weight 4.9g (±0.5g)
Lua Script iF GemX 100mW RX
TCXO Yes
Firmware Version ELRS 3.5.3

Applications

  • FPV freestyle and long-range builds
  • Aerial photography platforms

Installation Notes

  • Install the antenna away from conductive or magnetic components (carbon, metal, motors).
  • Update/flash the latest firmware as needed for your ExpressLRS ecosystem.

Band Notes

  • The 2400MHz band supports packet rate up to 500Hz.
  • For background information on ExpressLRS long-range performance, refer to the official ExpressLRS documentation: https://www.expresslrs.org/2.0/info/long-range/

What’s Included

  • 1 x ExpressLRS Dualband Receiver
  • 1 x Antenna (Optional)
  • 2 x Antenna (Optional)

For pre-purchase compatibility questions (connectors, antenna options, or selecting the correct receiver variant), contact support@rcdrone.top or visit https://rcdrone.top/.

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