Description
Telemetry RF power: Max 2x 100mw
Experience unmatched reliability with dual-band ELRS Gemini Xrossband
ELRS Gemini 2.4GHz
ELRS Gemini 868/900MHz
4 Descrete antennas for optimal antenna arrangement
20 X 20mm mounting holes
Xrossband GemX support
New Packet rates:
Sub-GHz 250Hz (-111dBm)
● Speed Boost: Achieve faster packet rates with enhanced sub-GHz performance.
Sub-GHz 200Hz Full (-111dBm)
● Optimized for Mavlink: Double the data rate of current 900 SX1276 hardware, catering specifically to Mavlink users for more efficient data transmission.
Dual Band X150Hz (-112dBm)
● Gemini Mode: Experience simultaneous sub-GHz and 2.4GHz transmissions, providing robust performance and reduced interference with a packet rate of 150Hz.
Dual Band X100Hz Full (-112dBm)
● Enhanced Gemini Mode: Achieve the same dual-frequency transmission benefits at a 100Hz packet rate with full 16 channel resolution, ensuring strong and stable connectivity even in challenging environments.
Introduction of K modes
DK500 (Coming in ExpressLRS V3.5)
● Design specifically from the ground up for lovers of speed and RC reliability. K modes are next generation FSK modulation with built in packet repair (Forward Error Correction). Just like FLRC D500, DK500 sends repeat packets to reduce packet loss in challenging race event environments. Coupled with a Gemini enabled Tx and Rx, nothing comes close to RC reliability.
K1000 Full SubGHs (Coming in ExpressLRS V3.5)
● Yes you read that right, 1000Hz in the 868/900MHz Domain! While this mode has been designed for maximum data throughput when used with MAVLink, don't be fooled by the 1000Hz, during development it was tested it at long range.
Specification
Item: DBR4 Gemini Xrossband ExpressLRS Receiver
Type: ISM_2.4, FCC_915
MCU: ESP32
RF chip: Semtech LR1121 x 2
Telemetry RF power: Max 100mW
Antenna: 2 x 2.4GHz wires & 2 x 900MHz wires
Frequency Range: 2.404 - 2.479 GHz / 903.5 - 926.9 MHz
Maximum receive refresh rate: 500Hz (1000Hz coming soon in ExpressLRS V3.4)
Minimum receiver refresh rate: 50Hz
Working voltage: DC 4.5 - 8.4V
Weight: Without antennas 2.70g / With antennas 5.30g
Dimension: 27.20 *27.20mm
Bus interface: CRSF
Package Includes
1 * DBR4 Gemini Xrossband ExpressLRS Receiver
2 * 2.4 GHz wire antennas
2 * 900 MHz wire antennas
1 * CRSF wire
4 * 4mm Red vibration dampeners
