Walksnail Ascent VRX HD FPV Video Receiver
by WALKSNAIL

The Walksnail Ascent FPV VRX HD Video Receiver (SKU: WN02-FP018) is a portable, standalone digital FPV receiver module engineered by CaddxFPV to bring low-latency digital HD video to any FPV goggles, monitor, or display equipped with an HDMI input port. Driven by the Walksnail Ascent HD transmission system, the receiver supports high-definition 1080p/60fps and high-frame-rate 720p/120fps decoding with end-to-end video latency as low as 35ms.

Equipped with dual RP-SMA LHCP circularly polarized antennas, adaptive frequency hopping, and a wide 7.4V to 25.2V DC input range, the Ascent VRX maintains a clean digital RF link across transmission distances up to 6km. It features an onboard MicroSD card slot supporting up to 256GB for one-click HD video recording, along with full Canvas Mode OSD support for real-time flight controller telemetry on Betaflight, INAV, and ArduPilot.

Key Features

• Universal HDMI Output: Plugs directly into any HDMI-equipped FPV goggles, external ground station monitors, or TV screens for low-latency viewing and race broadcasting.

• High-Frame-Rate HD Decoding: Supports 1080p @ 60fps and high-speed 720p @ 120fps video decoding for smooth, low-latency (~35ms) flight vision.

• Dual Circularly Polarized Antennas: Includes two RP-SMA LHCP Red Bird antennas offering $\ge97\%$ efficiency and low VSWR ($\le1.3$) for multi-path rejection and a stable link up to 6km.

• Adaptive Frequency Hopping: Automatically scans and transitions across channels in the 5.725–5.829 GHz band to avoid local RF interference.

• Onboard HD DVR Recording: Integrated MicroSD card slot accepts cards up to 256GB for direct MP4 (H.264) flight recording without requiring external DVR hardware.

• Full Canvas Mode OSD Integration: Natively renders Betaflight, INAV, and ArduPilot flight controller telemetry overlays on screen.

• Wide Voltage Range (2S–6S): Accepts 7.4V to 25.2V DC power input via a standard DC 5.5 x 2.1mm jack or SH1.0 6-pin port.

Technical Specifications

• Brand / Manufacturer: CaddxFPV / Walksnail

• Model Identifier: Walksnail Ascent FPV VRX

• Manufacturer SKU: WN02-FP018

• Communication Frequency: 5.725 GHz – 5.829 GHz

• Transmitter Output Power (EIRP): FCC/SRRC: $<30$ dBm | CE: $<14$ dBm

• HDMI Output Resolutions: 1080p @ 50/60fps, 720p @ 50/60/100/120fps

• End-to-End Latency: ~35 ms Average

• Max Transmission Range: Up to 6 km

• Input Voltage: 7.4V – 25.2V DC (2S to 6S LiPo)

• I/O Interfaces: HDMI Out, MicroSD Card Slot, DC 5.5 x 2.1mm Port, SH1.0 6-Pin Port, USB Type-C

• DVR Storage Support: MicroSD Card up to 256GB (exFAT / MP4 H.264)

• Channel Bandwidth: 5 MHz / 10 MHz / 20 MHz / Auto

• Antenna Connector Type: 2x RP-SMA Female

• Antenna Specifications: Red Bird LHCP, 2 dBi Average Gain, VSWR $\le 1.3$

• Dimensions: 114.5 mm x 64 mm x 24 mm (excluding antennas)

• Net Weight: 118 grams (excluding antennas)

What Is Included

• (1) Walksnail Ascent FPV VRX Module

• (2) Walksnail Red Bird LHCP Antennas (RP-SMA)

• (1) DC Power Cable (DC 5.5 x 2.1mm)

• (1) HDMI Cable

• (1) 3M Double-Sided Adhesive Mounting Pad