The FrSky R9MX receiver is a slightly improved version of the previous R9MM / Mini series long-range receivers.
The receiver has all the useful features of previous versions: inverted S.Port, redundancy function.
On the board added pins for connecting 4 PWM channels. The board itself became a bit bigger, and the antenna connector has been changed, now as well as in TBS the U.FL/IPEX1 connector is used instead of IPEX MHF4 of the previous versions.
The main change in this receiver is that it can only work with FrSky radios and modules withACCESSprotocol. Older QX7 ACCST radio hardware, even with the R9M 2019 ACCESS transmit module, may not be compatible with this receiver.
Features
ACCESS protocol support only
915MHz (NON-LBT version) / 868MHz (LBT version)
Supports wireless OTA firmware update
Supports wireless firmware version check
Inverted S.Port and support telemetry data transmission
Supports S.Port / F.Port (configurable in OpenTX / FrOS menu)
Support redundancy function (redundancy)
Support 4 PWM channels
Low latency
Support battery voltage detection
T-shaped antenna with protective housing and U.FL/IPEX1 connector
Features
Frequency: 915MHz (NON-LBT version)
Number of channels: 4 PWM / 16 SBUS (16th channel outputs RSSI)
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