2023 GEPRC ELRS DUAL 2.4G Diversity Receiver Antenna FPV Drone Built-in PA + LNA ExpressLRS 100mW Telemetry Power

Summary

GEPRC ELRS DUAL 2.4G Diversity Receiver is a new generation of true dual-antenna diversity receiver system based on the ExpressLRS open source project. ExpressLRS features long range operation low latency maximum 1000Hz refresh rate and low price.

The ELRS DUAL 2.4G Diversity Receiver has a reasonable placement of dual antennas for wider signal reception and more stable connection than ordinary single antenna receiver systems. It uses a TCXO temperature compensated crystal oscillator to avoid frequency shifts caused by temperature changes and the telemetry power is up to 100mW.

Specifications

Size: 20*14mm

Weight: 1.2g (RX only)

Chips: ESP32-PICO-D4 SX1281

Crystal Oscillator: TCXO

Frequency Band: 2.4GHz ISM

Refresh Rate: 25Hz-1000Hz

Input Voltage: 5V

Antenna Connector: ipex1

Indicator Light: RGB light

TLM Power: 20dBm

Feature

20mm*14mm Small size

1.2g weight

WIFI Upgrade firmware

ELRS open source project remote control

Maximum refresh rate of 1000Hz

Two independent RF receiving links true diversity receiver

The use of temperature-compensated crystal oscillator (TXCO) no fear of high or low temperature impact more stable performance even if long hours of work is not easy to cause loss of control

Built-in PA + LNA up to 100mW telemetry power

Includes

1 x ELRS DUAL 2.4G Diversity Receiver

2 x antenna

2 x heat shrink tube

4 x silicone cable

1 x pin (4pin)

1 x Instruction manual

Diagram

The RGB light color corresponding to the packet rate is shown in the figure below:

F1000 and F500 are packet rates in FLRC mode providing faster modulation and lower latency but at the same time having shorter reception distance than normal Lora mode. This mode is great for racers.

D500 and D250 are packet rates in DVDA (Deja Vu Diversity Aid) mode. This mode works at the F1000 data packet rate of FLRC mode providing better link connection in the case of complex interference by sending the same data packet multiple times. D500 and D250 indicate that the same data packet is sent twice and four times respectively.

Instructions

ELRS DUAL 2.4G Diversity Receiver and FC connection diagram:

Open Betaflight Configurator go to “Ports”tab and enable the corresponding UART as a Serial Rx (e.g. UART2 as shown below). Save and restart.

On the“Configuration”tab click on“Serial-based receiver”on the“Receiver”panel and select “CRSF”.

Binding

The factory firmware version of ELRS DUAL 2.4G Diversity Receiver is above 3.x 3.x and 2.x firmware are not compatible so the TX module firmware needs to be upgraded to above 3.x before binding.

1.Power on and off the diversity receiver three times with 1 second between each interval continuously to enter the Binding Mode.；

2.RGB indicator flashes twice quickly on the diversity receiver indicating that the receiver is now in Binding Mode.；

3.Configure remote control or transmitter module to bind with the receiver; If the receiver RGB indicator is solid on this indicates that the receiver has successfully bound.