iFlight ExpressLRS ELRS True Diversity Receiver - IF-B-03

iFlightSKU: DA-iF-84

Band: ELRS 2.4G RX + 2x 40mm Mini Antenna
Sale price£29.99

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If you want to use Gemini mode, you need to use a TX that supports Gemini mode.

iFlight ELRS diversity receiver is a true dual-antenna diversity receiver developed in close cooperation with the ExpressLRS Team. ExpressLRS is known for its long-range operation, low latency, and high-power telemetry feedback capabilities.

The ELRS diversity receiver features well-placed dual antennas with shielding covers, enhancing its resistance to interference, widening signal reception, and ensuring a more stable connection compared to conventional single-antenna receiver systems. 

It incorporates a TCXO temperature-compensated crystal oscillator to prevent frequency shifts caused by temperature variations. It significantly meets the reliability requirements for long-distance flights, aerial photography, or FPV freestyle maneuvers.


  • Gemini mode and True Diversity mode are compatible, better reception effect
  • Integrated shields can protect electronic components and enhance anti-interference capabilities.
  • Newly upgraded Temperature Compensated Crystal Oscillator, lower packet loss, high-frequency stability
  • Up to power 500mW(868MHz/900MHz)/250mW(2.4G) telemetry transmission, resulting in stronger telemetry signals and significantly reducing instances of telemetry loss.
  • High-performance at 2400MHz or 900MHz (900 / 868 bands available)
Performance and Compability

Make sure to install the antenna away from conductive or magnetic components (carbon, metal, motors). 

Flash the latest firmware and follow the ELRS Community for updates, tutorials or contributions.

Use iFlight ELRS receivers coupled with our transmitter for maximum performance! We've probably achieved market's best crystal frequency stability at a very low frequency deviation. Please checkout this article for further information https://github.com/ExpressLRS/ExpressLRS/wiki/Crystal-Oscillator-(XO)-Frequency-Error

Band Option

The 900MHz as well as 2400MHz band have outstanding performance and long range capabilities. If you're not sure what to get, please checkout the official ELRS Long Range Competition to see what has been achieved. https://www.expresslrs.org/2.0/info/long-range/

What can you expect? Due to local regulations, the 900MHz FCC region seems to have a better performance than the 868MHz EU region. The 2400MHz band works great in any region, has a higher packet rate up to 500hz. This is not a common 2400MHz protocol and cannot be compared to anything prior on the market.


  • MCU: ESP32-Pico D4
  • Receiver Type: Gemini/True Diversity
  • Firmware: iFlight 900MHz 500mW Diversity RX (868MHz/900MHz) 
  •            iFlight 2.4GHz 250mW Diversity RX(2.4G)
  • Lua Script: iF 900 500mW GRX (868MHz/900MHz) 
  •             iF 2G4 250mW GRX(2.4G)
  • Frequency bands: 868MHz EU/900MHz FCC and 2.4GHz ISM
  • Telemetry Power: 100-500mW (20-27dBm) (868/900MHz)  
  •                                 50-250mW (17-24dBm)(2.4G)
  • Dimension: 24.3*18.5*6.5mm (868/900MHz) / 24.5*18.6*6.3mm(2.4G)
  • Protocol: CRSF
  • LNA: N/A(868/900MHz) / YES (2.4G)
  • Weight: 4.2g (868/900MHz) / 3.3g (2.4G)


1 x ExpressLRS Diversity Receiver 

2 x Antenna

Product Details

Product TypeReceiver
Shipping Weight10 grams

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Support Information

Further product support information: https://iflightrc.freshdesk.com/support/home

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