Product overview
The RadioLink R4FGM is a four-channel receiver for mini RC cars, including 1:28 models. Its physical architecture combines radio reception and a gyro in a unit measuring 25*13mm and weighing 3g, making its size and mass relevant to installations with limited space. The gyro uses software filtering and a PID algorithm, with sensitivity adjustable through the PS3 switch. The supplied configuration consists of one R4FGM receiver and one package bag; this is a receiver component rather than a flight platform or airframe kit.
The receiver uses FHSS communication with 67-channel pseudo-random frequency hopping and supports 3-10V input for high-voltage servos. Ground control distance is up to 400m. With RC8X, selectable servo timing is 14ms, 4ms or 3ms, requiring firmware V1.1.5 or above, FHSS V2 selection, and a receiver bearing V2.1 tags or a PASS factory date of 2023/4/26 or later. Other transmitters default to 14ms. Analog servos are recommended to use 14ms; digital servos use 4ms or 3ms. Reverse polarity protection covers the receiver, while servos remain unprotected.
Specifications
| Specification | Value & conditions |
|---|---|
| Product type and channels | R4FGM four-channel receiver with integrated gyro |
| Intended application | Mini RC cars |
| Dimensions | 25*13mm |
| Weight | 3g |
| Model scale suitability | Suitable for 1:28 mini RC cars |
| Radio communication | FHSS spread spectrum with 67-channel pseudo-random frequency hopping |
| Selectable servo timing | 14ms, 4ms or 3msBound to RC8X; RC8X firmware V1.1.5 or above with FHSS V2 selected; R4FGM with V2.1 tags or PASS factory date of 2023/4/26 and later. |
| Default servo timing | 14msBound to transmitters other than RC8X. |
| Recommended servo timing | Analog servo: 14ms; digital servo: 4ms or 3msConnected servo type. |
| Gyro processing | Integrated gyro with software filtering and PID algorithm |
| Gyro sensitivity adjustment | Adjustable using the PS3 switch |
| Resolution ratio | 4096 |
| Signal stability | 0.25us |
| Processor | 48MHz M0 |
| Control distance | Up to 400mOn the ground. |
| Input voltage and servo support | 3-10V input; supports high-voltage servos |
| Reverse polarity protection | Receiver reverse polarity protectionPower supply connected in reverse; protection applies to the receiver, while servos do not support reverse polarity protection. |
| Supplied configuration | One R4FGM receiver and one package bag |
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