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Description
RadioMaster DBR4 Dual-Band Xross Gemini ExpressLRS ReceiverIntroducing the DBR4 Receiverthe ideal match for the RadioMaster Nomad. This advanced dual band, dual channel Gemini receiver ensures seamless compatibility with the Nomad module. With its ability to simultaneously receive 2. 4GHz and 900MHz signals, the DBR4 offers exceptional interference rejection and reliable signal integrity. Trust the DBR4 for robust performance and explore new horizons with confidence. VIDEO: RadioMaster Nomad ExpressLRS Module
Introducing the DBR4 Receiver—the ideal match for the RadioMaster Nomad. This advanced dual-band, dual-channel Gemini receiver ensures seamless compatibility with the Nomad module. With its ability to simultaneously receive 2.4GHz and 900MHz signals, the DBR4 offers exceptional interference rejection and reliable signal integrity. Trust the DBR4 for robust performance and explore new horizons with confidence.
VIDEO: RadioMaster Nomad ExpressLRS Module – Next-Level Dual-Band Performance!
Features
- Supports ExpressLRS Gemini 868/900MHz
- Supports ExpressLRS Gemini 2.4GHz
- 2x 100mw Telemetry RF Power
- Gemini Xrossband Technology
- Advanced Cooling System
- 20x20 Mounting Holes
- 4 Discrete Antennas
- Compatibility
INTRODUCTION OF K MODES
K1000 Full SubGHz (Coming in ExpressLRS V3.5)
- Yes, you read that right—1000Hz in the 868/900MHz domain! While this mode is designed for maximum data throughput when used with MAVLink, don't let the 1000Hz fool you; during development, it was tested for long-range performance.
DK500 (Coming in ExpressLRS V3.5)
- Designed specifically from the ground up for speed enthusiasts and RC reliability. K modes are next-generation FSK modulation with built-in packet repair (Forward Error Correction). Similar to FLRC D500, DK500 sends repeat packets to minimize packet loss in challenging race environments. Paired with a Gemini-enabled Tx and Rx, nothing compares to its RC reliability.
NEW PACKET RATES
Sub-GHz 200Hz Full (-111dBm)
- Optimized for MAVLink: Double the packet rate of current 900MHz SX1276 hardware, tailored specifically for MAVLink users to provide a more robust link and reduced interference.
Dual Band X100Hz Full (-112dBm)
- Enhanced Gemini Mode: Enjoy dual-frequency transmission with a 100Hz packet rate and full 16-channel resolution, ensuring strong and stable connectivity even in challenging environments.
Dual Band X150Hz (-112dBm)
- Gemini Mode: Experience simultaneous sub-GHz and 2.4GHz transmissions, offering robust performance and reduced interference with a packet rate of 150Hz.
Sub-GHz 250Hz (-111dBm)
- Speed Boost: Achieve faster packet rates with enhanced sub-GHz performance.
Specifications
- Maximum Receive Refresh Rate: 500Hz (1000Hz coming soon in ExpressLRS V3.4)
- Frequency Range: 2.404 - 2.479 GHz / 903.5 - 926.9 MHz
- Weight: 2.70g (without antennas) / 5.30g (with antennas)
- Item: DBR4 Gemini Xrossband ExpressLRS Receiver
- Firmware Version: ExpressLRS v3.3.2 pre-installed
- Antenna: 2 × 2.4GHz Wires & 2 × 900MHz Wires
- Minimum Receiver Refresh Rate: 50Hz
- Telemetry RF Power: Max 100mW
- Working Voltage: DC 4.5 - 8.4V
- Dimensions: 27.20 × 27.20 mm
- RF Chip: Semtech LR1121 × 2
- Type: ISM_2.4, FCC_915
- Bus Interface: CRSF
- MCU: ESP32
Includes
- 1x RadioMaster DBR4 Dual-Band Xross Gemini ExpressLRS Receiver
- 4x 3mm Black Vibration Dampeners
- 4x 4mm Red Vibration Dampeners
- 1x Manual Card
- 1x CRSF Wire
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1239 reviews
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Product Reviews
★★★★★ 4
Fluffy and Nice Omegaverse
Format: Kindle
… this would have made 5 stars but for 2 reasons.
A.) there were quite a few typos; misspelled words, missing quotations, “the his” mistakes, and various signs that maybe a proofread would do good.
B.) the writing was quite textbook. Late blooming omega is struggling with her new self, finds a absurdly wealthy pack of alphas, every thing is almost insta-love but she resists, then decides to love herself and let everyone be happy.
Rian was my favourite (obviously the author’s favourite too because he got the most page time) but I wish we could see more of his CEO side? He went to work maybe ONCE the entire time. Gray was supposed to be the “growly one” but he turned out to be puppy dog. Lucas was a genius brainiac doctor - but also super alpha with an aggressive hindbrain with a breeding k*nk?? And then there was no actual “breeding”??
Spice 3/5 - normally omegaverse books are super high on messy smut but this was tamer.
Romance 3/5 - insta-love that was then resisted because of personal hangup’s
Plot 2/5 - weird paced head hopping, showing the same scene from different POV’s that made me feel like it was 2 steps backward, 1 step forward.
Humour 4/5 - there were a dozen lines that genuinely made me chuckle out loud
Would have been five stars but the lack of proofreading and the predictable plot made me unable to get up to ADORED IT level - four stars is still and official ENJOYED IT, y’all. This isn’t a bad rating. The “Club Heat” has intriguing possibilities so I’m going to give the second one a shot.
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Reviewed in the United States on March 31, 2023
★★★★★ 5
ABSOLUTELY A MUST for Omegaverse Girls!!!
I ABSOLUTELY LOVE Jillian West and her books!!! I’m so happy I already bought book two and now I have to buy the others for the Assurance Security series!!
Not gonna lie Val kind of annoyed me at the beginning but she grew on me!! Her men are chef’s kisses!!! Holt annoys me some but I can let it slide. I already bought part two so I’m going to be reading that in between work phone calls!!!! DON’T TELL MY BOSS 😂😂😂😂
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Reviewed in the United States on September 30, 2025
★★★★★ 4
Baby bumps and bodyguards
Format: Kindle
Dark, emotional, and unexpectedly tender, Not Ready is an omegaverse romance that delivers found family feels, fierce protectiveness, and a very pregnant heroine who refuses to break. Vale’s on the run from a stalker, but lands in the arms of three private security alphas, cue the swoony tension, fake marriage twist, and slow-burn heat.
It’s a little gritty, a little soft, and a whole lot addictive. If you love protective alphas, high stakes, and heroines with quiet strength, this one’s a must-read.
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Strong Omegaverse Comfort and a Attention Grabbing Plot
Format: Kindle
Jillian West never misses when it comes to Omegaverse, and Not Ready is no exception. This story was the perfect blend of cozy comfort and emotional depth while still delivering a strong plot.
Vale is such a powerful heroine, she is strong, capable, and determined but I love that she still allows her pack to love and take care of her. It’s that balance of independence and vulnerability that makes her so relatable.
The relationship dynamics were amazing: Bishop is steadfast and completely head over heels, Mercy is skeptical but protective in his own way, and Holt is the hesitant one whose slow fall is so satisfying to watch unfold.
The romance hits that sweet spot between insta-love and cautious build, keeping me hooked the entire way through. And that ending. Oh my god, the cliffhanger! I need the next book in this duet immediately.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Interesting
Format: Kindle
So I will say I enjoyed the story, for sure had its moments where it dragged but it was a great story. I really liked that omegas picked their alphas/make the pack. Normally the Alphas make it and the omega fits in with them which is great but I enjoyed this new version where all the power basically went to the omega. It was a nice change of pace. I can admit some of the weird bedroom stuff with her being pregnant was odd, it’s really not hard to do stuff when pregnant (I know I’ve had two and it’s normal and even encouraged at the end especially if you want the baby out). But I like the story as a whole and will read the second, I do hope the next one isn’t dragged bc it stopped being action or tense after she met her alphas and I don’t think it was brought up or properly done when they tried to do it. More sweet after she left.
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Reviewed in the United States on November 11, 2024
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