Features:
• Based on ELRS V3.3 and in collaboration with the ELRS development team, the first Gemini dual-frequency diversity transmitter has been released! Currently, the SuperG Nano transmitter can achieve the best communication quality together with an ELRS receiver, such as the SuperD receiver or the SuperP receiver. With the dual 1W transmitter power, it has excellent anti-interference properties and stability, making it an ideal solution for demanding applications such as FPV racing, long-distance flights or professional photography;
• Double the power of the 1 W transmitter amplifies signal strength, increases transmission distances and significantly increases control range;
• Carefully crafted from CNC aluminum alloy, the transmitter body facilitates heat conduction, complemented by a cleverly designed radiator system;
• The transmitter has 2 customizable buttons and 1 USB port, so it can be powered by external power sources;
• The SuperG Nano transmitter can be configured using LUA scripting. It can easily be used with EdgeTX and OpenTX radios that support CRSF. It can be used with popular Nano interoperable TXs when used with the Micro-Nano module adapter, including Radiomaster TX16, Boxer, Zorro. Jumper T16, T20, T Pro. Frsky QX7, X9, X Lite.
Specification:
• Manufacturer: BETAFPV;
• RF Power: 25mw/50mW/100mW/250mW/500mW/1000mW;
• Packet Rate: 50Hz/100Hz/150Hz/250Hz/333Hz/500Hz/D250/D500/F500/F1000;
• Frequency: 2.4GHz ISM;
• Model: BETAFPV SuperG Nano Transmitter Module | ELRS 2.4G;
• Rated Current: 8V, 1000mA@1000mW, 1:128, Gemini mode;
• Input voltage: 7V~13V DC;
• USB port: type-C connector;
• Target Name: BETAFPV SuperG Nano 2.4GHz TX;
• Default software: ExpressLRS V3.3.0;
• Fan voltage: 5V.
Below is a schematic diagram of the SuperG Nano transmitter.
Note: Please install the antenna before turning on the device. Otherwise, the PA chip of the SuperG Nano transmitter will be irreversibly damaged.
Below is a comparison of 3 products: SuperG Nano Transmitter, ELRS Nano TX Module, and ELRS Micro TX Module.
Learn more about Diversity&Gemini

• True diversity mode, where both antennas receive data on the same frequency. The antenna that receives the correct data first is used;
• Twin mode, where two antennas simultaneously receive telemetry data with a frequency difference of 40 MHz. They also transmit data simultaneously, but at different frequencies. This means that the same data packets can be received at different frequencies and by different antennas. This mode ensures stable flight even in difficult radio environments.
• Gemini is the most advanced feature of ExpressLRS to date – Gemini mode. It has the most stable signal reception mode, is more resistant to interference and has greater stability, making it suitable for a variety of applications;
• The SuperG Nano transmitter features a Gemini mode feature. Tested by developer Jye Smith in the video It can be seen that at a refresh rate of 1000 Hz, the LQ value fluctuates between 90-100 when the true diversity receiver is operating. However, when switching to Gemini mode, the LQ value stabilizes at 99-100. This shows that ELRS is making a lot of effort to ensure the stability of the connection.Combination with Diversity RXGemini mode is based on the hardware foundation of true diversity receivers, so it requires a dual high-frequency RF output module. When used with Super series products, the advantages of Gemini mode can be fully utilized. O The effects of using the transmitter and receiver in different modes are as follows:


Basic configuration
The SuperG Nano transmitter is designed to receive signals using the Crossfire Serial Data Protocol (CRSF). Therefore, the high-frequency module interface of the transmitter must support CRSF signal output. Based on the example of the EdgeTX transmitter system, we will explain how to configure the transmitter to output CRSF signals and control the transmitter using Lua scripts.
On the EdgeTX system, go to MODEL SEL and enter the SETUP menu. Turn off the internal RF (set to OFF), turn on the external RF, and set the output mode to CRSF as shown in the figure below.
Lua scripts are a lightweight and compact scripting language that can be embedded into the transmitter for convenient access and modification of the transmitter configuration.
1. Download the elrsV3.lua script from the BETAFPV Help Center or ExpressLRS Configurator;
2. Copy the official Lua script elrsV3.lua to the transmitter's SD card, save it to Scripts/Tools;
3. On the EdgeTX system, long press the SYS or MENU button to enter the SD-HC CARD menu.
4. In this menu, select the elrsV3.Lua script and run it;
5. If the Lua script is run successfully, the interface will appear as shown in the illustration below.
Optional buttons
The SuperG Nano transmitter has 2 buttons that users can customize.
The following are specific management actions:
1 Turn on the transmitter's WiFi or turn it on and wait 60 seconds to enter WiFi mode using LUA programming;
2. The RGB indicator light will slowly flash green, indicating that the transmitter has automatically enabled WiFi (WiFi name: ExpressLRS TX, WiFi password: expresslrs);
3. Connect your smartphone or computer to the WiFi network and open a web browser. Enter http://10.0.0.1 to enter the custom button settings page;
4. In the Action section of the corresponding button, select the desired custom function. Then, in the Press and Count columns, select the button type and the number of presses or duration. Click SAVEto complete the settings.
There are currently 6 functions that can be assigned to the hotkey buttons. The buttons can be used in 2 ways: long press and short press. The duration of the long press can be customized, as can the number of short presses.
The following are 6 functions that can be set:
The table below shows the transmitter operation according to the factory settings. (The left button is button1 and the right button is button2).
Tethering and external power supply
The SuperG Nano transmitter uses the default firmware, which uses the official ExpressLRS V3.3.0 protocol without a binding phrase. Therefore, the binding receiver must also have firmware V3.0.0 or later installed and must not have a Binding Phrase set.
For optimal performance, it is recommended to place the two transmitter antennas as far apart as possible.
• Switch the receiver to pairing status and wait for the connection;
• To enter bind mode, click "Bind" in the Lua script or set a custom button;
• If the indicator turns solid, it means the device is successfully paired.
When the dual transmission power exceeds 500mW, the SuperG Nano transmitter consumes relatively much power, which shortens the battery life. To extend the transmitter's usage time, it is advisable to use an external battery as a power source.
• The power consumption of the transmitter is not only related to the transmission power, but also to the telemetry ratio. When using a large power of 500mW and above, the feedback ratio can be set to be larger to reduce power consumption and extend the use time;
• For example, when using Gemini mode, with a feedback ratio of 1:128, the power consumption is 1000 mA, while with a feedback ratio of 1:2, it is only half of 1:128.
Note: When the radio transmitter battery or external battery voltage is lower than 7V (2S) or 10.5V (3S), use 500mW and 1W Gemini mode with caution, otherwise the transmitter will enter the restart state due to insufficient power, resulting in uncontrolled disconnection.
Package:
1x SuperG Nano Transmitter;
2x 2.4G antennas;
1x USB to Type-C data cable;
1x Type-C to XT30U power cable;
1x GH1.25 to FUTABA signal cable;
1x Micro-nano module adapter;
1x Double-sided adhesive tape;
1x User manual.
Warning: Please install the antenna before turning on the device. Otherwise, the module's microcircuit will be permanently damaged!
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