iFlighExpressLRS ELRS True Diversity Receiver

If you want to use Gemini mode, you need to have a transmitter (TX) that supports this mode.

The iFlight ELRS Diversity Receiver is a dual antenna receiver developed in collaboration with the ExpressLRS team. ExpressLRS is known for its long range, low latency and powerful telemetry feedback.

This receiver features dual shielded antennas to improve noise immunity, enhance signal reception, and provide a more stable connection than conventional single-antenna systems.

Built-in TCXO (Temperature Compensated Crystal Oscillator) prevents frequency drift due to temperature fluctuations, making it ideal for long-distance flights, aerial photography and FPV freestyle.

Features

Supports Gemini and True Diversity modes for improved reception

Protective shielding for component protection and increased noise immunity

Updated TCXO for reduced packet loss and frequency stability

Telemetry power up to 500mW (868/900MHz) or 250mW (2.4GHz) for stronger signal and minimized losses

Supports frequencies 900MHz and 2400MHz (900/868 available)

Performance and Compatibility

Install the antenna away from driving or magnetic components (carbon, metal, motors)

Update your firmware and follow the ELRS community updates

Use iFlight ELRS receivers with iFlight transmitters for maximum performance

iFlight ELRS receivers have the best frequency stability due to the low deviation of the crystal oscillator.

Read more about the stability of crystal oscillators: view the article

Frequency ranges

900MHz and 2400MHz provide high performance and range

900MHz (FCC) has better performance than 868MHz (EU) due to regional restrictions

2400MHz works in any region and supports refresh rates up to 500Hz

This is not an ordinary 2.4GHz protocol and has no analogues on the market

Characteristics

MCU: ESP32-Pico D4

Receiver Type: Gemini/True Diversity

Firmware:

iFlight 900MHz 500mW Diversity RX (868MHz/900MHz)

iFlight 2.4GHz 250mW Diversity RX (2.4GHz)

Lua Script:

iF 900 500mW GRX (868MHz/900MHz)

iF 2G4 250mW GRX (2.4GHz)

Frequency bands: 868MHz(EU)/900MHz(FCC)/2.4GHz(ISM)

Telemetry power:

100-500mW (20-27dBm) (868/900MHz)

50-250mW (17-24dBm) (2.4GHz)

Dimensions:

3×18.5×6.5mm (868/900MHz)

5×18.6×6.3mm (2.4GHz)

Protocol: CRSF

LNA (low noise amplifier):

None (868/900MHz)

Present (2.4GHz)

Weight:

2g (868/900MHz)

3g (2.4GHz)

Equipment

1 × ExpressLRS Diversity Receiver

2 × Antennas