iFlight BLITZ Whoop 5.8G 2.5W VTX Video Transmitter

The iFlight BLITZ 5.8GHz 2.5W VTX is a high-power analog video transmitter engineered for specialized long-range and freestyle FPV platforms. Delivering 5 adjustable power stages up to an extreme 2500mW output ceiling, it guarantees exceptional signal propagation, dense obstacle penetration, and robust link stability across expansive operating boundaries. To manage high thermal loads, it combines a full structural CNC aluminum heat dissipation shield with an active internal cooling fan for dual-action thermal management. Outfitted with a wide 7V to 34V voltage tolerance, an integrated microphone, a built-in power output self-test mechanism, and rapid frequency locking logic, this VTX features a unique micro 25.5×25.5mm mounting layout and supports the standardized IRC Tramp protocol for effortless remote parameter tuning.

Features

High-Output Power Scaling: Outfitted with 5 adjustable power steps capable of stepping from stealth PIT mode up to a powerful 2500mW (2.5W) maximum output, making it ideal for specialized deep-range aircraft tracking.

Dual-Action Thermal Management: Combines a full structural CNC aluminum heat dissipation shield with an active internal micro cooling fan to maximize airflow and prevent thermal locking during high-power deployments.

RF Power Output Self-Check: Integrated hardware calibration circuitry automatically runs a power output self-test to ensure consistent, clean transmission levels across all operational states.

Rapid Frequency Locking: Advanced RF synchronization logic locks onto the selected frequency instantly upon boot, suppressing startup signal drift and protecting nearby pilots from video blinding.

IRC Tramp Telemetry Interface: Seamlessly integrates with standard IRC Tramp protocol fields, allowing pilots to modify video channels, bands, and power steps directly through the Betaflight OSD.

Expansive Frequency Spectrum: Operates across a comprehensive 40-channel matrix spread evenly over 5 frequency bands, fully incorporating a highly stable Raceband corridor to minimize inter-pilot signal washing.

High-Acoustic Onboard Microphone: Features a built-in miniature microphone transmitting real-time motor and environmental audio telemetry straight to the pilot's audio receiver.

Micro Mounting Core: Highly unique structural design fits a standard micro-sized 25.5×25.5mm mounting pattern, allowing ultra-high-power deployment inside lightweight multirotor setups.

Specifications

Brand / Model: iFlight BLITZ 5.8GHz 2.5W VTX

RF Carrier Frequency: 5.8 GHz Spectrum Core

Available Channel Matrix: 40 Selectable Channels (including Raceband)

RF Output Power Platform: PIT / 25 mW / 400 mW / 1000 mW / 2500 mW (Adjustable)

Telemetry Integration Bus: IRC Tramp Protocol (Betaflight VTX Table Compatible)

Primary Operating Input Voltage: 7.0 V – 34.0 V DC (Supports direct 2S – 8S LiPo mainlines)

Regulated Auxiliary Output: 5 V Rail Output

Acoustic Monitoring Hardware: Built-in High-Quality Microphone

Antenna Interface Connector: Low-Loss MMCX Mechanical Base

Mechanical Mounting Pattern: 25.5 mm × 25.5 mm (with Φ1.6 Hardware Clearance)

Weight Parameter: 32.0 g (excluding external antenna element)

Hardware Button & LED Interface Logic

Power Toggle Button:

Press and hold for 2 seconds: Toggle into or out of stealth PIT mode. A solid, continuous Green LED indicates active PIT mode.

Short press: Cycles through output power steps. The green status LED will flash to indicate the current level: 1 flash = 25mW, 2 flashes = 400mW, 3 flashes = 1000mW, 4 flashes = 2500mW.

Band & Channel Toggle Button:

Press and hold for 2 seconds: Cycles through frequency bands. The Red LED will flash to correspond with Bands A through R.

Short press: Cycles through channels. The Blue LED will flash to indicate channels 1 through 8.

Hardware Interface Pinout

VBAT: Primary Positive Power Input Link (2S–8S, 7V–34V DC mainlines)

GND: Primary Negative Power Ground Plane

5V OUT: Onboard Step-Down Regulatory Output

IRC: IRC Tramp Telemetry Control Input (Connects to Flight Controller UART TX Pad)

GND: Dedicated Ground Plane

Video In: Analog Video Composite Feed Input from Flight Controller

Camera In: Direct Video Input from FPV Camera Lens

Camera Out: Direct Video Output pass-through

Notes

Factory Default Power Step: For safety and regulatory compliance, the VTX is pre-configured out of the box to a standard 25mW output ceiling. High-power settings must be manually unlocked via the firmware configuration.

Before use install the antenna. Running a high-power VTX without an antenna will cause instant, catastrophic damage to the RF amplifier stage.

Fly with constant airflow and in a well-ventilated environment to prevent overheating. Operating transmission profiles above 25mW may require specific operator licensing or local regulatory approval depending on your region.

Package

1 x iFlight BLITZ 5.8GHz 2.5W VTX Module