Key facts
- Brand
- FrSky
- Model
- RX4R
- Category
- Other Electronics
- Industry
- Appliances
- Documents
- 3
- Languages
- EN · ZH
- Last added
- 2023-10-15
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FrSky RX4R Telemetry Receiver User Manual
The FrSky RX4R is a high-precision telemetry receiver featuring 4 PWM outputs with low latency (9ms less than X series) and redundancy support. It operates under the ACCESS protocol and offers a range increase of up to 40% compared to previous models, suitable for applications requiring reliable signal transmission over distances greater than 2km.
Read onlineFrSky RX4R specifications
| Number of Channels | 24CH |
|---|---|
| Operating Voltage Range | 3.5V~10V |
| Operating Current | 100mA@5V |
| Operating Range | >2km |
| Dimension | 18*17*7mm (L × W × H) |
All FrSky RX4R documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the latency of the PWM output?
The latency of the PWM output is 9ms less than that of X series receivers in high speed mode.
What is the default PWM frame rate?
The factory default setting is FS mode with a 20ms servo frame rate.
How is the failsafe position set?
Move controls to the desired position, bind the receiver, and press the F/S button on the receiver briefly (less than 1 second).
What is the minimum height required to place a model for a pre-flight range check?
The model must be placed at least 60cm (two feet) above non-metal contaminated ground.
What is the latency of the PWM output in high speed mode?
The latency of PWM output is 9ms less than that of X series receivers in high speed mode.
How do I switch between FS and HS modes?
Go to the receiver [Options] menu and select whether to enable the 7ms PWM or not.