SKU: DRFC-3391
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Jumper T20 Gemini Radio Controller

₹15,049.00 (Inclusive of all taxes)
Out of Stock

The Jumper T20 Gemini is a compact, full-featured radio controller equipped with an omnidirectional double-folding antenna for superior 2.4GHz signal coverage, designed for seamless integration with ExpressLRS (ELRS) and EdgeTX firmware for FPV drone pilots.

Features

  • Omnidirectional Double-Folding Antenna for 90° placement and superior 2.4GHz signal coverage.
  • Compact, full-featured design with integrated OLED screen for on-the-fly telemetry and setup.
  • Native ExpressLRS (ELRS) Gemini protocol support for high-performance, low-latency control.
  • Optimized chassis airflow and heat dissipation for reliable, extended operation sessions.
  • Extensive hardware and software customization via EdgeTX open-source firmware.

Out of stock

Description

The Jumper T20 Gemini Radio Controller integrates a high-performance 2.4GHz RF system built around the ExpressLRS Gemini protocol, delivering ultra-low latency and robust signal penetration essential for competitive FPV racing and long-range freestyle. Its compact form factor houses a full suite of controls, gimbal inputs, and an OLED display, managed by the versatile EdgeTX operating system for complete parameter customization.

Engineered for durability and thermal management, the controller’s chassis design promotes excellent internal airflow, effectively dissipating heat from the mainboard and RF module during prolonged use. The innovative omnidirectional double-folding antenna allows for optimal 90-degree positioning, ensuring consistent spherical signal coverage regardless of transmitter orientation, which is critical for maintaining video and control link integrity in dynamic flight scenarios.

Key Features

  • ExpressLRS Gemini 2.4GHz RF system for ultra-low latency and high-packet-rate control.
  • Omnidirectional Double-Folding Antenna with 90° positioning for consistent spherical signal coverage.
  • High-precision Hall-effect gimbals offer smooth, accurate stick response and long-term durability.
  • EdgeTX open-source firmware support for deep menu customization, model profiles, and Lua scripts.
  • Integrated OLED screen displays real-time telemetry, RSSI, battery voltage, and model settings.
  • Optimized chassis ventilation ensures effective heat dissipation from the mainboard and RF amplifier.
  • Ergonomic, compact design balances portability with a full complement of switches, pots, and buttons.
  • Wide input voltage compatibility for use with popular 2S LiPo or Li-ion transmitter battery packs.

Applications

  • Primary transmitter for 5-inch and 7-inch long-range FPV drones requiring robust ELRS control links.
  • Competitive FPV racing setups where low-latency ExpressLRS protocol and reliable signal are critical.
  • Freestyle and cinematic drone pilots utilizing EdgeTX for complex model mixing and telemetry logging.
  • Builders of DIY UAVs and multirotors who require a highly customizable open-source radio platform.
  • Drone trainers and multi-pilot environments benefiting from the consistent 2.4GHz signal coverage.

Technical Specifications

Item TypeRadio Controller
Model NameJumper T20 V2 GEMINI
Operating Frequency2.4 GHz
RF ProtocolExpressLRS (ELRS) Gemini
Screen TypeOLED
Antenna TypeOmnidirectional Double Folding Antenna
FirmwareEdgeTX
Shipping Weight0.960 kg
Shipping Dimensions23 × 19 × 11 cm

Frequently Asked Questions

What RF protocol does the Jumper T20 Gemini use, and is it compatible with my existing receivers?

The Jumper T20 Gemini uses the ExpressLRS (ELRS) Gemini protocol on the 2.4GHz band. It is fully compatible with any ExpressLRS 2.4GHz receiver running matching firmware versions. You may need to update the transmitter's internal module firmware via WiFi or USB to ensure compatibility with your specific receiver.

Can I use the T20 Gemini with other firmware like OpenTX, or is it locked to EdgeTX?

The T20 Gemini is designed and shipped with EdgeTX firmware, which is the modern, actively developed successor to OpenTX. While the hardware may be technically capable of running OpenTX, Jumper and the community primarily support EdgeTX for this model, providing access to its enhanced features, Lua scripts, and more frequent updates.

What is the benefit of the omnidirectional double-folding antenna, and how should I position it?

The omnidirectional double-folding antenna provides consistent spherical signal coverage, reducing null zones. For optimal performance, position one segment at a 90-degree angle relative to the other. This configuration ensures strong signal strength regardless of how you tilt or turn the transmitter during flight, which is crucial for maintaining link integrity in acrobatic FPV maneuvers.

What type of battery does the T20 Gemini require, and what is its typical operational voltage range?

The T20 Gemini typically operates on a 2S LiPo or Li-ion battery pack (nominal 7.4V, charging to 8.4V). It is designed for a wide input voltage range, commonly from 6V to 12V, making it compatible with most standard transmitter battery packs. Always refer to the official manual for the exact supported voltage specifications.

Package Includes

  • 1 x Jumper T20 Gemini Radio Controller

Additional Information

Weight 0.96 kg
Dimensions 23 × 19 × 11 cm