GoolRC FGr4B front view shows compact receiver for easy installation
GoolRC FGr4B back ports enable quick wiring and setup
GoolRC FGr4B side profile highlights slim, lightweight form
GoolRC FGr4B compact design for tidy mounting on aircraft
GoolRC FGr4B antenna detail confirms stable 2.4 GHz connectivity
GoolRC FGr4B failsafe feature illustration for safer control
GoolRC FGr4B firmware update image outlining binding steps
GoolRC FGr4B packaging/photo indicating ready-to-use product
GoolRC FGr4B installation example demonstrates quick mounting

GoolRC

GoolRC FGr4B 2.4GHz AFHDS3 4-Channel Receiver for Flysky PL18/NB4 Transmitters

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$53.67

Available quantity: 5.

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Product details

Overview

The GoolRC FGr4B receiver delivers a compact 4-channel 2.4 GHz link for Flysky AFHDS3 systems. Its small footprint and lightweight build make it easy to install across a range of models, helping you keep wiring tidy while maintaining a dependable connection.

Compatibility and firmware

The FGr4B supports AFHDS3 transmitters and is currently compatible with PL18 v1.0.55, NB4 v2.0.93, and NB4 Lite v1.0.10 and newer. The firmware uses high-frequency library version 3.0 to support the necessary AFHDS3 features and stability.

  • AFHDS3 compatibility with Flysky transmitters
  • 4-channel operation for versatile control
  • 2.4 GHz link designed for low latency

Failsafe and safety behavior

The failsafe function outputs the channel according to a protection value you set if the receiver loses its signal, offering predictable behavior while you regain control of the model.

Binding, updates, and usage

If a firmware update causes a temporary binding issue, the receiver can be placed into forced update mode to restore compatibility and continue operation without major downtime.

Design, installation, and support

The design is small and light, enabling quick, unobtrusive installation in many airframes. If you encounter problems, contact our store for prompt assistance and a satisfactory solution.

Key benefits at a glance

  • Reliable 2.4 GHz AFHDS3 link with Flysky transmitters for 4-channel control
  • Compact, lightweight form factor supports easy mounting and wiring

Quick setup notes

  • Verify transmitter firmware compatibility: PL18 1.0.55, NB4 2.0.93, NB4 Lite 1.0.10 or newer
  • If binding stalls after an update, try the forced update mode as needed

In daily use, the GoolRC FGr4B aims to offer a dependable, flexible link with clear signals, while keeping installation simple and providing continued support from GoolRC.

FAQ

Q: What transmitters is the GoolRC FGr4B compatible with?

A: The FGr4B supports Flysky AFHDS3 transmitters, including PL18 v1.0.55, NB4 v2.0.93, and NB4 Lite v1.0.10 and newer.

Q: How does the failsafe feature work on the FGr4B?

A: If the signal is lost, the failsafe outputs the channel according to the user-defined protection value.

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