Transmitter Sub250 Send T400

Choose the ultra-light Sub250 Send T400 video transmitter for clear analog signal on your micro drone

The Sub250 Send T400 video transmitter is an ideal solution for pilots building lightweight FPV drones weighing up to 250 grams. The model provides stable video broadcasting at a frequency of 5.8 GHz with adjustable power up to 400 mW. Weighing just 2 grams and compact in size, this VTX has virtually no impact on the aircraft's alignment and flight characteristics. Easy setup via buttons or IRC Tramp protocol makes it a great choice for both beginners and experienced pilots.

5 main advantages

• Ultra-light weight 2 grams for sub-250g class drones.
• Adjustable power: PitMode, 25, 200 and 400 mW.
• 48 channels in the 5.8 GHz band for interference-free operation.
• Control via IRC Tramp protocol and configuration via OSD.
• Standard mount 25.5x25.5 mm for installation on AIO boards.

How the Sub250 Send T400 video transmitter works

The device receives a video signal from an FPV camera and converts it into radio waves with a frequency of 5.8 GHz. Switching between four power levels (PitMode, 25, 200 and 400 mW) allows you to tailor range and power consumption to specific flight conditions. Seven LEDs on the board display the current channel and power level. \

Configuration is performed either by buttons on the VTX itself, or through the flight controller via the IRC Tramp protocol, which allows you to change parameters directly from the OSD. Built-in temperature control system prevents overheating and protects the transmitter from damage. Power is supplied with a stable voltage of 5 V through the SH1.0 connector or solder pads.

Features of the Send T400 model range

The Send T400 is the flagship video transmitter in the Sub250 line for analog systems. Unlike more powerful models, it is optimized for micro drones where every gram counts. The model is equipped with a U.FL connector for connecting lightweight antennas and has a standard 25.5x25.5 mm mount, which allows it to be installed directly on AIO boards. The absence of a built-in microphone reduces weight and simplifies design. The package includes the VTX itself, an SH1.0 cable and a 5.8 GHz linear antenna.

• Input voltage: 5V
• Input impedance: 75 ohms
• Protocol: IRC Tramp
• Antenna connector: UFL
• Cable connector: SH1.0
• Output Power: PitMode/25mW/200mW/400mW
• Frequency: 48 channels
• Microphone: no
• Mounting hole: 25.5mm*25.5mm (M2)
• Weight: 2 g