MXO-RACING FUTABA SFHSS Built-in GYRO NANO 4CH TOWER ANTENNA RECEIVER RXC52-SG

RXC52-SG Receiver Overview

The RXC52-SG is a compact, antenna-less, array-type micro receiver integrated with a built-in gyro.
It is compatible with the Futaba SFHSS protocol and is specifically designed for 1:24 / 1:28 scale models or MINIZ interface systems.

✅ Compatible Transmitters

• Futaba 10PX

• Futaba 7PX / 7PXR

• Futaba 4PX / 4PXR / 4PV / 3PV

• Futaba 4PLS / 4PL / 4PM

• Futaba 7XC / 4GRS

📐 Product Specifications

• Size: 19.6 × 12.0 × 7.0 mm

• Weight: 1.35 g

• Operating Voltage: 3.3 ~ 8.5V

• Protocol: Compatible with Futaba SFHSS

• Parallel High-Speed Output

• Adaptive Output Speed:

  • 5.5ms for DX4S

  • 8.25ms for DX5C

• Built-in Mul_Gyro (Note 1)

• Supports Online Firmware Upgrade

Note 1: The gyro function is only available in the SG version.

🔵 LED Indicators

Blue LED (Receiver Status)

• Fast Flashing: Binding mode

• Slow Flashing: Awaiting transmitter signal

• Solid: Bound and operating normally

Yellow LED (Gyro Status)

• Off: Gyro disabled or not present

• Solid - Dim: Gyro active in NOR (normal) direction

• Solid - Bright: Gyro active in REV (reverse) direction

Red LED (Transponder Status)

• Off: Transponder disabled or not present

• Solid: Transponder active

🔗 Binding Procedure

1. Power on the receiver.

2. Hold the BIND button until the blue LED flashes rapidly.

3. Power on the transmitter.

4. When the blue LED turns solid, binding is complete and the signal is received.

⏱️ 3.4ms and 6.8ms Mode Switching

The RXC52-SG supports both 3.4ms and 6.8ms output modes, depending on the transmitter settings:

With Futaba T7PX or T10PX

• SFHSS Analog Mode → 6.8ms Mode

• SFHSS Digital Mode → 3.4ms Mode

With Other Futaba Transmitters

• RX MODE = S-FH (NORM) → 6.8ms Mode

• RX MODE = S-FH (HIGH) → 3.4ms Mode

🎯 Gyro Sensitivity & Direction Setup (SG version only)

Gyro parameters are controlled via CH3 of the transmitter:

• CH3 < 1.4ms → Yellow LED bright → Gyro acts left, higher sensitivity with narrower pulse

• CH3 > 1.6ms → Yellow LED dim → Gyro acts right, higher sensitivity with wider pulse

• CH3 at midpoint → Gyro OFF, yellow LED off

🧭 Setting ST Channel End Points

When the gyro is active, ST output includes the gyro signal and ignores transmitter-defined end points.
To avoid servo damage, end points must be set on the receiver:

1. Set CH3 to midpoint to disable the gyro (yellow LED off).

2. Move ST channel left to the desired endpoint → Press BIND → Yellow LED flashes ~2 seconds, then off.

3. Move ST channel right to the desired endpoint → Press BIND → Yellow LED flashes ~2 seconds, then off.

4. End points are now stored based on the servo positions during steps 2 and 3.

• With gyro OFF → ST end points from the transmitter

• With gyro ON → ST end points from the receiver

If using a 2-channel transmitter, you must configure these settings via the GUI tool.

⚙️ Mul-Gyro Advanced Configuration

The built-in Mul-Gyro system offers up to 17 adjustable parameters to suit various performance needs.
Configuration requires:

• GUI Tool (download link below)

• MX USB PG-ISP to connect the receiver to your PC

• See Figure 2 & 3 in the full manual for reference
  

🔄 Online Firmware Upgrade

Steps:

1. Power off your transmitter.

2. Use the MX USB PG-ISP to connect the receiver to your PC.

3. Open the GUI tool to upgrade firmware.

The receiver cannot connect to the GUI if the transmitter is powered on.

Download GUI Tool:
👉 https://store.mxo-rc.com/download-gui