Readytosky VTX 3.3G 4W 8CH Video Transmitter

The Readytosky VTX 3.3G 4W is an ultra-high-power analog video transmitter engineered for specialized long-range FPV operations within the alternative 3.3GHz frequency spectrum. Delivering hardware power scaling up to a massive 4000mW output ceiling, it guarantees exceptional signal propagation, dense obstacle penetration, and maximum link reliability over extreme distances. Housed inside a compact chassis, it features an integrated cooling system designed to manage high thermal loads during maximum power deployments. Outfitted with a wide 7V to 36V voltage tolerance, it accommodates an 8-channel matrix across two independent frequency bands and fully supports the standardized IRC Tramp telemetry protocol for effortless remote parameter tuning.

Features

Extreme 4W Output Power: Outfitted with hardware-regulated power steps scaling up to a massive 4000mW maximum output, making it an ideal choice for specialized deep-range aircraft tracking.

Specialized 3.3GHz Spectrum: Operates within the alternative 3.3GHz band, which inherently offers significantly better object penetration and lower atmospheric attenuation than standard 5.8GHz systems.

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.

Active Thermal Management: Built with an integrated internal cooling system to maximize airflow, ensure high operational efficiency, and prevent thermal locking during high-power deployments.

Broad Voltage Compatibility Matrix: Supports a wide input voltage corridor from 7V to 36V DC, enabling hassle-free direct power integration straight from most standard FPV battery mainlines.

Reliable Antenna Interconnect: Employs a professional-grade low-loss MMCX mechanical base to provide a highly secure and durable RF connection.

Specifications

Brand: Readytosky

Model Name: VTX 3.3G 4W

RF Carrier Frequency: 3.3 GHz Spectrum Core

Available Channel Matrix: 8 Selectable Channels (Bands A and B)

RF Output Power Platform: Up to 4000 mW (4W) Maximum / Selectable Stealth PIT Mode

Telemetry Integration Bus: IRC Tramp Protocol Compatible

Primary Operating Input Voltage: 7.0 V – 36.0 V DC

Antenna Interface Connector: Low-Loss MMCX Mechanical Base

Physical Footprint Dimensions: 40.0 mm × 37.0 mm × 13.0 mm

Weight Parameter: 21.0 g (VTX Module only)

Operational Control Logic

Manual overrides via physical buttons are supported when remote telemetry control is not actively utilized.

Channel and Band Toggle Button:

Short press: Cycles through channel profiles 1 to 8 within the current band. The channel number is verified by the corresponding LED flash count.

Press and hold for 3 seconds: Switches between Frequency Band A (indicated by the Red LED) and Frequency Band B (indicated by the Blue LED).

Power and Pit Mode Toggle Button:

Short press: Manually enables or disables active RF output transmission power.

Press and hold for 3 seconds: Activates or deactivates low-power stealth PIT mode, allowing safe bench configuration and pit-side testing without blinding other pilots.

Notes

Before use install the antenna. Running an ultra-high-power 4W VTX without a matching 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 on the 3.3GHz band requires specialized operator licensing and regulatory approval in most jurisdictions.

Package

1 x Readytosky VTX 3.3G 4W Module

1 x MMCX to SMA RF Extension Adapter Cable

1 x Dedicated 3.3GHz SMA Antenna

1 x JST Power Supply Cable

1 x User Product Manual