More from Buddy RC →RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver
$37.59
In stock at buddyrc.com
The RadioMaster XR4 Gemini Xrossband is a true-diversity dual-band ExpressLRS receiver covering 2.4GHz and 900MHz. Two Semtech LR1121 transceivers and two T-type antennas support Gemini and Gem-X modes, and it weighs just 1.7 g without antennas. Wi-Fi updates and a spare UART make it a good fit for long-range FPV quads and fixed-wing builds.
See all 4,621 Buddy RC products·Visit buddyrc.com
Price and stock from buddyrc.com, refreshed daily. We may earn a commission if you buy.
Highlights
- Dual-band 2.4GHz and 900MHz
- ExpressLRS Gemini and Gem-X support
- Dual Semtech LR1121 and ESP32 MCU
- Wi-Fi WebUI updates
- 1.7 g, 22 x 18 x 4 mm
Best for
Long-range FPV pilots who want maximum link reliability.
Things to consider
- The product handle says XR2 Nano, but the listing describes the XR4; confirm before buying.
- Your transmitter must support the matching ELRS bands and modes.
- Solder installation required.
Key specs
| Price | $37.59 |
|---|---|
| Bands | 2.4GHz and 900MHz |
| Telemetry power | 100mW |
| Voltage | 4.5 to 8.4V |
| Weight | 1.7 g (no antennas) |
| Firmware | ExpressLRS v3.5.1 |
| Included | Receiver, 2 T antennas, CRSF wire, heat shrink, manual |
Our take
A top-tier long-range ELRS receiver; just confirm the model.
RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS… at a glance
| Brand | Buddy RC |
|---|---|
| Price | $37.59 |
| Availability | In stock at buddyrc.com |
| Returns | Items can be returned within 30 days of receipt with an RMA code requested by email.… |
Price check
At $37.59, the RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS… is toward the top of Buddy RC's price range, whose 4,618 listed products run $0.25 to $9,999.
Similar items from other brands we track run $3.59 to $18.90.
Frequently asked questions
What is Gem-X?
Gemini Xrossband, an ExpressLRS mode that uses both 2.4GHz and 900MHz at once for a more robust link.
Are antennas included?
Yes, two dual-band T-type antennas.
How much is the RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS…?
Buddy RC lists it at $37.59 on buddyrc.com. We refresh prices throughout the day, but always confirm the final price at checkout.
What is Buddy RC's return policy?
Items can be returned within 30 days of receipt with an RMA code requested by email. Returns in new condition with original packaging have no restock fee; others are charged 10 to 20%, and shipping fees are not refunded.
How long does Buddy RC take to ship?
Orders placed before 2 p.m. EST usually ship the same business day from Columbus, Ohio, by USPS or UPS, with most packages arriving in 2 to 5 business days. Orders over $100 may ship free within the US, excluding most airplanes, and LiPo batteries ship only by UPS Ground.
Does the RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS… come with a warranty?
Buddy RC's published warranty terms: Products older than 30 days may be exchanged under warranty but aren't eligible for a refund. Specific warranty terms aren't published in the policy text.
Where can I buy the RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS…?
The RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS… is sold directly by Buddy RC on buddyrc.com. The Shop now button on this page goes straight to the product there.
Is the RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS… in stock?
Yes. Buddy RC lists it as in stock on buddyrc.com as of our latest check. Stock and prices refresh throughout the day.
Is Buddy RC a legit store?
Buddy RC is a strong pick for RC pilots who need specific parts, power systems or helicopter spares from a US warehouse with same-day dispatch. Skip it if you want generous returns, since shipping is never refunded and returns that aren't in new condition carry a 10 to 20% restock fee. Confirm the exact part number and motor or frame compatibility before ordering, because most of the catalog is model-specific. Our full Buddy RC review covers shipping, returns and what to check before ordering.
Is the RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS… expensive?
At $37.59 it is toward the top of Buddy RC's range ($0.25 to $9,999 across 4,618 products), and similar items from other brands run $3.59 to $18.90.
More from Buddy RC
Shop all Buddy RC →
Alternatives from other brands
