SpeedyBee TX ULTRA User Manual

Instruction Diagram

The SpeedyBee TX ULTRA is a compact FPV video transmitter. It features a JST connector for power and signal, an antenna connector, and a mode switch button.

Physical Layout:

• JST Connector: Provides power input (7-28V) and output (5V), along with GND connections.
• Antenna Connector: For connecting the FPV antenna.
• Mode Switch Button: Used for controlling various functions.
• LED Indicators: Blue (Channel), Red (Band), Orange (Power).

Dimensions: The main board measures approximately 20mm x 28mm. The overall unit with cover is approximately 20mm x 29mm.

Installation Note: Ensure the mainboard and cover are securely fastened using screws, as they are supplied separately.

LED Indicators and Status

The TX ULTRA uses LED indicators to display its operational status:

Key Operation

The mode switch button allows for control of the transmitter's functions:

• Short Press: Cycles through channels CH1 to CH8.
• Long Press (2 seconds): Enters BAND mode. Short press again to cycle through bands 1 to 6.
• Long Press (4 seconds): Enters POWER mode. Short press again to cycle through power levels: 25mW, 200mW, 800mW, Max mW.
• Long Press (10 seconds): Toggles between unlock and lock modes.

Support for IRC TRAMP Protocol

The TX ULTRA supports the IRC TRAMP protocol, enabling modification of video transmission parameters such as frequency and working power via a compatible remote control. If your flight controller supports Bluetooth or Wi-Fi, these parameters can also be adjusted using the SpeedyBee app.

Note for BetaFlight Users: For flight controller firmware versions above BetaFlight 4.1.0, it is necessary to upload a VTX Table to the flight controller to ensure normal operation and parameter modification of the video transmitter.

Relevant VTX table files include:

• SpeedyBee-TX ULTRA (CE).json
• SpeedyBee-TX ULTRA (USA).json

For detailed instructions on using VTX tables, refer to the article "How to Setup Betaflight VTX Table – SmartAudio Tramp VTX Control" by Oscar Liang.

The interface for controlling these parameters typically displays information such as TRAMP status, band, channel (frequency), power, and temperature.

Flight Controller Wiring

Proper wiring is essential for the TX ULTRA to function correctly with your flight controller. The following diagrams illustrate connection methods, using UART1 as an example.

JST Connection:

This method uses the JST connector for a plug-and-play setup. The connections typically involve:

• Power Input: 7-28V
• Ground: GND
• Power Output: 5V OUT
• Signal: IRC (for TRAMP control), VIDEO (for video signal)

The diagram shows the JST connector wires (e.g., red for power, black for GND, yellow for VIDEO, blue for IRC) connecting to corresponding pins on the flight controller and the TX ULTRA.

Pad Connection:

This method involves soldering directly to pads on the flight controller and the TX ULTRA. The connections are similar to the JST connection:

• Power Input: 7-28V
• Ground: GND
• Signal: IRC, VIDEO
• 5V Output: 5V OUT

The diagram shows the TX ULTRA with its pads labeled (e.g., 9V G VTX T1, 4V5 G, VIDEO, IRC, GND, 5V OUT) and how they correspond to flight controller pads (e.g., TX1, RX1, 5V, GND).

BetaFlight 4.1 or Above Settings

For optimal performance with BetaFlight versions 4.1 and above, specific configuration settings are required for the UART ports used by the TX ULTRA. The table below outlines recommended settings:

Ensure the correct UART is enabled and configured for TRAMP control (often via the Peripherals setting).

Remote Control and Frequency Table

The TX ULTRA can be controlled via a compatible remote control, often using specific modes like "Mode-2" for stick configuration. The transmitter supports the IRC TRAMP protocol, allowing for detailed frequency and power adjustments.

Frequency Table:

The table below shows the available frequencies (in MHz) for each channel across different bands. Note that orange channels are disabled in locked state.