RadioMaster DBR4 Dual Band Xross Gemini ExpressLRS Receiver
£29.99 Inc. VAT
DBR4 is a cutting-edge dual-band, dual-channel Gemini receiver that ensures seamless compatibility with the Nomad.
Out of stock
This product is currently sold out.
No worries! Enter your email, and we'll let you know as soon as it's back in stock.
Introducing the DBR4 Receiver: the perfect companion to the RadioMaster Nomad. The DBR4 is a cutting-edge dual-band, dual-channel Gemini receiver that ensures seamless compatibility with the Nomad module. Engineered for superior performance, the DBR4 boasts two dual-band sections, each capable of simultaneously receiving 2.4GHz and 900MHz signals. This innovative design allows for the reception of two data streams simultaneously, providing exceptional interference rejection and eliminating the risk of lost packets. With the DBR4, you can trust that your signal remains robust and reliable, giving you the confidence to push your limits and explore new horizons. Elevate your RC experience with the unparalleled connectivity and performance of the DBR4 Receiver.
Features
- Telemetry RF power: Max 2x 100mw
- Experience unmatched reliability with dual-band ELRS Gemini Xrossband
- ExpressLRS Gemini 2.4GHz
- ExpressLRS Gemini 868/900MHz
- 4 Descrete antennas for optimal antenna arrangement
- 20 X 20mm mounting holes
- Xrossband GemX support
New Packet Rates
New Packet RatesSub-GHz 250Hz (-111dBm)
- Speed Boost: Achieve faster packet rates with enhanced sub-GHz performance.
Sub-GHz 200Hz Full (-111dBm)
- Optimized for Mavlink: Double the packet rate of current 900 SX1276 hardware, catering specifically to Mavlink users for a more robust link and reduced interference.
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.
- 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
- Firmware Version: ExpressLRS v3.3.2 pre-installed
- Bus interface: CRSF
Included:
- 1 x DBR4 Gemini Xrossband ExpressLRS Receiver
- 2 x 2.4 GHz wire antennas
- 2 x 900 MHz wire antennas
- 1 x CRSF wire
- 4 x 4mm Red vibration dampeners
- 4 x 3mm Black vibration dampeners
- 1 x Manual card
Questions and answers of the customers
There are no questions yet. Be the first to ask a question about this product.
SHIPPING & DELIVERY
We are based in the UK and ship to most destinations worldwide.
We dispatch orders during the times shown on our Dispatch Schedule. Orders placed before the daily dispatch cutoff will ship the same day (subject to stock availability). Orders placed after the cutoff will ship on the next scheduled dispatch day.
A confirmation email is sent once your order has been packed. If you need to amend your order, please contact us as soon as possible — once shipped, we’re unable to make changes.
We work with trusted delivery partners including Royal Mail, DHL, UPS, Fedex and Parcelforce. If you have a delivery requirement or would like to arrange collection, please get in touch.
Next Dispatch: Today
Please fill in the fields below with the shipping destination details in order to calculate the shipping cost.
Shipping to the UK
- Order before the daily dispatch cutoff for same day dispatch.
- FREE delivery available on qualifying orders over £99 (under 1kg).
For small, low-value orders, Royal Mail First Class is our most economical option. Royal Mail Tracked 24 is the most popular choice, offering full tracking and flexible delivery options. For guaranteed next working day delivery, we recommend Royal Mail Special Delivery.
Royal Mail delivers to residential addresses Monday to Saturday, while courier services (including DHL) typically deliver Monday to Friday.
International Postage
- USA orders: Import duties and taxes are prepaid by us — no additional customs charges on delivery.
- Other destinations: Customs duties or import taxes may apply and are the responsibility of the recipient.
Smaller, lower-value orders may be sent via Airmail or tracked postal services. Economy road and express air courier options are available depending on destination. For faster delivery, we recommend express air courier services such as DHL Express, which typically deliver within 1–2 working days across Europe and a few working days for most other destinations.
You may also like…
Related products
Reviews
Clear filtersThere are no reviews yet.