Frsky R9 MX and R9 SX receivers
Frsky announced two new long range R9 series R9 MX and R9 SX receivers. They are upgraded versions of the predecessor receivers. Both have OTA update, redundancy feature and PWM channels.
R9 MX
The R9 MX is upgraded version of R9 Mini and R9 MM, takes features from the previous receivers and making it compatible with more external devices by providing an Inverted S.Port output and supporting the redundancy function. Additionally, it has soldering points to connect 4 PWM channels. R9 MX has OTA (Over the Air) firmware update capability.
The new R9 MX works only with the ACCESS compatible radios and R9M modules only (R9M 2019, R9M Lite, R9M Lite Pro).
- Frequency: 868MHz / 915MHz
- Dimension: 18*12*3.2mm
- Weight: 3.2g
- Numbers of Channel: 4 PWM / 16 SBUS (CH16 outputs RSSI)
- Operating Voltage: DC 3.5V~10V
- Operating Current: 100mA@5V
- Compatibility: R9M Lite/ R9M Lite Pro / R9M 2019 with ACCESS firmware
- ACCESS protocol and supports OTA functions
- 900MHz/868MHz long-range with low latency
- Enhanced and durable design
- Support S.Port / F.Port (Configurable in OpenTX / FrOS menu)
- With inverted S.Port outputs
- Signal redundancy function
- Detachable Ipex1 connector antenna
R9 SX
The R9 SX is the enhanced version of the R9 Slim series of long-range capable receivers. It adds 3-pin servo connectors with 6 full PWM channels and utilizes the dual-antenna design. The light-weight protective shell has a Multi-use 6-pin plug to bring you additional functions like signal redundancy, telemetry feedback, external battery detection and more.
R9 SX has OTA (Over the Air) firmware update capability.
The 6 PWM channels can be converted to 4 PWM channels with the additional Ch5 and Ch6 can be configured as an alternative S.Port and SBUS outputs to the 6-pin port.
The new R9 SX works only with the ACCESS compatible radios and R9M modules only (R9M 2019, R9M Lite, R9M Lite Pro).
- Frequency: 868MHz / 915MHz
- Dimension: 36*17*7mm / 47.5*20.5*11mm (including case and pins)
- Weight: 8.8g / 13g (including case and pins)
- Numbers of Channel: 6 PWM / 16 SBUS (CH16 outputs RSSI)
- Operating Voltage: DC 3.5V~12.6V
- Operating Current: 100mA@5V
- Compatibility: R9M Lite/ R9M Lite Pro / R9M 2019 with ACCESS firmware
- ACCESS protocol and supports OTA functions
- 900MHz/868MHz long-range with low latency
- Enhanced and durable design
- 6 standard servo connectors (default PWM channel)
- Switchable CH5/CH6 into S.Port/SBUS Output channels
- Support S.Port / F.Port (Configurable in OpenTX / FrOS menu)
- Signal redundancy function
- External battery detection
- Detachable Ipex1 connector antenna
Available @
Not available yet.
| MX | SX | Stab | |
| 915MHz/868MHz | √ | √ | √ |
| Size (L*W*H) (including case and pins)* |
18*12*3.2mm | 36*17*7mm / 47.5*20.5*11mm* | 45.7*26.3*16.2mm* |
| Weight (including case and pins)* |
3.2g | 8.8g / 13g* | 18.6g* |
| SBUS Out Channel | 16 | 16 | 16 |
| PWM Out Channel | 4 | 6 | 8 |
| SBUS In | √ | √ | – |
| Operating Current | 100mA@5V | 100mA@5V | 140mA@7.4V |
| Voltage Range | DC 3.5V~10V | DC 3.5V~12.6V | DC 3.5V~10V |
| Over The Air (OTA) | √ | √ | √ |
| S.Port / F.Port | √ | √ | √ |
| Inverted S.Port | √ | ||
| External Ain Port | √ | ||
| Protocol | ACCESS | ACCESS / ACCST | |
| Compatibility | R9MLite/R9MLitePro/R9M 2019 | All | |
| Control Range & Telemetry | Up to 10Km or above | Up to 10Km or above | Up to 10Km or above |
| Features | Inverted S.Port | Switchable CH5/CH6 PWM channel (S.Port/SBUS Out) | Built-in 3-axis gyroscope and 3-axis accelerometer |
| Signal redundancy | Signal redundancy | Multiple configuration modes and methods (LUA & Freelink) | |
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