ULTRA 2500 VTX 2.5W 5.8G 64CH Adjustable

ULTRA 2500 VTX 2.5W – High-Power 4.9G–5.8G Multi-Band Transmission System

The ULTRA 2500 VTX 2.5W is engineered for pilots who require extreme output power and flexible frequency coverage within a compact FPV module. Designed to operate across both 4.9GHz and 5.8GHz bands, this transmitter supports professional long-range flight configurations while maintaining stable analog video clarity.

Built for serious FPV applications, the module provides adjustable transmission levels ranging from 25mW to 2500mW. This allows pilots to fine-tune output according to race regulations, freestyle sessions, or extended-range exploration flights. The addition of Pit mode ensures safe power-up configuration during events or bench testing.

ULTRA 2500 VTX 2.5W Multi-Band 64 Channel Architecture

Supporting 64 channels across 4.9G–5.8G frequency tables, the system ensures broad compatibility with modern FPV receivers and ground stations. Pilots operating in RF-congested environments benefit from flexible band selection and reduced interference risk.

For builders requiring slightly lower output levels in compact frames, you may also explore the Ultra 1600 5.8GHz 1.6W Adjustable VTX, which provides balanced performance for mid-range builds.

ULTRA 2500 VTX 2.5W Power System & Electrical Stability

This transmitter accepts a wide DC input range from 7V to 36V (2S–8S LiPo compatibility), simplifying installation across multiple drone configurations. An integrated 5V 600mA regulated output allows direct camera powering, reducing wiring complexity and improving build efficiency.

The IRC Tramp protocol ensures seamless communication with compatible flight controllers. Pilots can adjust channel, band, and output power directly from OSD without manual button configuration.

Mechanical Design & Integration

With a 30.5mm × 30.5mm M3 mounting pattern, the board fits standard racing stacks and long-range drone frames. The compact 36.5mm footprint and lightweight 15g design maintain aerodynamic efficiency without adding unnecessary payload.

The MMCX antenna connector provides secure attachment and high-frequency stability. Builders are advised to use antennas and receivers that support the full 4.9G–5.8G frequency spectrum when switching between bands.

Built-In Audio & Video Compatibility

An integrated microphone enables audio transmission alongside analog video feed. The system supports both PAL and NTSC formats, ensuring compatibility with a wide range of FPV cameras and goggles.

Technical Overview

• Output Power: 25mW / 400mW / 800mW / 1500mW / 2500mW / Pit Mode
• Frequency: 4.9G–5.8G (64 Channels)
• Input Voltage: 7–36V (2–8S)
• Camera Power Output: 5V @ 600mA
• Protocol: IRC Tramp
• Video Format: PAL / NTSC
• Connector: MMCX
• Mounting: 30.5mm × 30.5mm (M3)

For a deeper technical explanation of RF transmission principles in FPV systems, refer to the Video Transmitter Technology Overview. Understanding frequency allocation and output regulation helps optimize performance and signal integrity.

The ULTRA 2500 VTX 2.5W is designed for pilots who demand maximum adjustable power, multi-band flexibility, and reliable analog transmission stability in advanced FPV builds.