iFlight BLITZ Whoop 4.9G 2.5W VTX

The iFlight BLITZ Whoop 4.9G 2.5W VTX is a high-power, heavy-duty analog video transmitter engineered for specialized long-range operations and advanced signal penetration. Housed in a precision CNC-machined aluminum heatsink case with an integrated active cooling fan, this VTX offers dual thermal protection to combat heat buildup at extreme power settings. Capable of outputting up to a massive 2500mW, it features an integrated onboard microphone and a wide voltage input range, making it a rugged and adaptable solution for complex structural builds and deep-range tracking.

Features

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

Massive Scalable Power Headroom: Outfitted with 5 adjustable power steps capable of stepping from stealth PIT mode up to an extreme 2500mW (2.5W) maximum output.

Dual-Action Thermal Management: Combines a full structural CNC aluminum heat dissipation shield with a silent internal electric fan to maximize airflow and prevent thermal locking.

IRC Tramp Control Interface: Supports the standardized IRC Tramp telemetry protocol for instant, dynamic video transmitter configuration adjustments through the Betaflight OSD or radio controller scripts.

Tactile Hardware Interface Buttons: Dual integrated physical buttons allow for rapid, tool-free diagnostic adjustments of output power stages, frequency bands, and channel matrices directly in the field.

Integrated Camera Passthrough Bus: Configured with onboard 5V output and grounding pads alongside dedicated video input and output lines to cleanly interface and power FPV camera modules.

Specifications

Model Name: iFlight BLITZ Whoop 4.9G 2.5W VTX

RF Transmission Frequency: 4.9 GHz Spectrum Core

Input Operating Voltage: 7 V – 34 V DC (Supports 2S – 8S LiPo Battery input)

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

Available Channel Matrix: 8 Independent Channels

RF Antenna Interface: Heavy-Duty MMCX Connector

Telemetry Protocol: IRC Tramp

Chassis Structural Material: CNC-Machined Aluminum Alloy

Mechanical Mounting Pattern: 25.5 mm × 25.5 mm (Φ1.6 mm Mounting Hole Diameter)

Physical Footprint Dimensions: 50 mm × 30 mm × 16 mm

Weight Parameter: 32 g

Note: Factory defaults lock output to a compliant 25mW setting. Operations above 25mW require regional licensing validation.

LED Status Diagnostic Indicators

Power Selection Button & Layout (Green LED Array)

Hold for 2 Seconds: Toggles target module into or out of PIT mode (Solid Green state indicates PIT active).

Short Single Press: Displays current RF power output via counting blinks, and sequences to the next stage. 1 blink = 25mW, 2 blinks = 400mW, 3 blinks = 1000mW, 4 blinks = 2500mW.

Frequency Selection Button & Layout (Blue LED Array)

Short Single Press: Displays active channel number via counting blinks, and advances to the next channel from Channel 1 through Channel 8.

Hardware Interface Pinout

VBAT: Positive Power Input Pad (7 V – 34 V DC, 2S–8S Battery Core)

GND: Negative Power Ground Plane

IRC: IRC Tramp Control Signal Input

Video In: Analog Video Composite Feed Input from Flight Controller

Cam Out: Shielded Video Feed Output to Flight Controller OSD Layer

5V Out: Onboard Step-Down Regulatory Output for Camera Hardware

GND: Dedicated Camera Negative Ground

Cam In: Raw Video Feed Direct Connection Input from Camera Lens

Package

1 x iFlight BLITZ Whoop 4.9G 2.5W VTX Module