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RadioMaster R81 2.4GHz 8CH Over 1KM SBUS Nano Receiver Compatible FrSky D8 Support Return RSSI for RC Drone

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    RadioMaster R81 2.4GHz 8CH Over 1KM SBUS Nano Receiver Compatible FrSky D8 Support Return RSSI for RC Drone


    Description:

    Brand Name: RadioMaster

    Item Name: R81 Nano Receiver

    Model: R81

    Weight: 2g

    Size: 17*11 mm

    Channels: 8CH

    Frequency range: 2400-2483.5Mhz

    Power input range: 4.5-6V

    Signal format: FrSky D8 Compatible

    Output format: SBUS

    Support return: support return RSSI

    Control distance: more than 1km

    Antenna length: Approximaltly 6cm


    Bind method:

    1. Press and hold the BIND button on the receiver then connect power. After approximately 3 seconds, the receiver LED will be RED, the receiver is now in bind mode

    2. Select the D8 protocol for the multi-protocol menu of your remote control, and press the [BIND] option, the red light of the receiver will flash indicating successful bind

    3. Exit bind mode on your remote control and disconnect power to the receiver then power the receiver once more. The LED will now be solid RED indicated the bind is now done. If not please repeat step 1 and 2


    Fail-safe Protection:

    1. Press the BIND button once within 10 seconds of th eceiver being powered on, and the receiver will save all the current channel values of the remote control as the fail-safe value

    2. 10 seconds after the receiver is powered on, the BIND button function will be disabled to prevent accidental changes to to the fail-safe settings while preparing the model for flight


    RSSI output:

    This receiver has a total of 9 channels. 8 channels + an RSSI output channel.

    Channels 1-8 are controlled by the remote controller, the 9th channel is the signal strength RSSI value output by the receiver itself, which can be read by the flight controller and sent to the OSD device Show

    signal strength.


    Package Included:

    1 x R81 Nano Receiver



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    RadioMaster R81 2.4GHz 8CH Over 1KM SBUS Nano Receiver Compatible FrSky D8 Support Return RSSI for RC Drone

    RadioMaster R81 2.4GHz 8CH Over 1KM SBUS Nano Receiver Compatible FrSky D8 Support Return RSSI for RC Drone

    RadioMaster R81 2.4GHz 8CH Over 1KM SBUS Nano Receiver Compatible FrSky D8 Support Return RSSI for RC Drone

    RadioMaster R81 2.4GHz 8CH Over 1KM SBUS Nano Receiver Compatible FrSky D8 Support Return RSSI for RC Drone

    RadioMaster R81 2.4GHz 8CH Over 1KM SBUS Nano Receiver Compatible FrSky D8 Support Return RSSI for RC Drone

    Customer Reviews

    4.90 out of 5
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    • RamNas VIP5
      CA
      18/02/2021

      Great tiny D8 receiver. The small size makes it easy to install in any airframe. RSSI telemetry on channel 9 works well. Great range comparable to the XM+ but better because it’s not an Frsky product.

      Comments (0)
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    • AlexGe VIP3
      MD
      03/01/2021

      Very lightweight, good build quality. Antenna wires are very thin.

      Comments (0)
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      • 0
        Q: Please specify in your product description which IPEX antenna connectors are used. IPEX 1 is larger (not noticably) like is used in old Frsky Rx antennas, and the IPEX 4 is like that used on the newer FrSky antennas. This is important!
        A:
        IPEX4 Antenna interface
        Answered by dengjunbao on 06/05/2021Helpful (0)
      • 0
        Q: Is it compatible with Taranis Qx7?
        A:
        Yes
        Answered by uozkan on 07/09/2021Helpful (0)
      • 0
        Q: what firmware (accst) does it have? 1.xxx? 2.xxx?
        A:
        It is frsky d8. works with fcc accst radios.
        Answered by uozkan on 07/09/2021Helpful (0)
      • 0
        Q: compatible with futaba T6K?
        A:
        No
        Answered by masato on 28/07/2021Helpful (0)
      • 0
        Q: Is it compatible with jumper t lite reciver ?
        A:
        Yes
        Answered by Lapidos4 on 07/11/2022Helpful (0)
      • 0
        Q: Is it compatible with Radio Master Tx16s running MULTI-Module Firmware Version 1.3.1.92
        A:
        SOURCE INNOVATION
        Answered by RISCORIX on 01/12/2023Helpful (0)
      • 0
        Q: Does this have telemetry?
        A:
        Yes it has, but only the D8 protocol telemetry. If you need RSSI, then yes it has RSSI telemetry.
        Answered by Montis on 22/01/2021Helpful (0)
      • 0
        Q: Radiomaster S8 Lite and Radiomaster R81. can i use this??. hope so. I Get this very soon. tank you!!
        A:
        I assume you mean T8 lite as I don't see an S8 Lite listed. On the specs on the Radiomaster site it says RF Module CC2500 and Protocol Options D8. If that's your TX, then, yes this RX will pair and work with your TX.
        Answered by BG502556513 on 25/10/2023Helpful (0)
      • 0
        Q: My r81 show blinking red led and successfully binds with t8 lite v2 radio but after i reconnect the battery the receiver led is not solid red but blinks every now and then and there is a huge input lag in betaflight receiver tab??? Please help if anyone faced similar issue
        A:
        after binding it requires you to tune it
        Answered by RISCORIX on 04/05/2024Helpful (0)
      • 0
        Q: Is this compatible to flysky remote
        A:
        are not distinct protocols
        Answered by RISCORIX on 17/05/2022Helpful (0)
      • 0
        Q: can this product connect to radiomaster tx12?
        A:
        Yes
        Answered by Martin4093 on 03/04/2022Helpful (0)
      • 0
        Q: Will this receiver works with Eachine ER*****.4G radio? (this is Novice-III custom radio)
        A:
        Yeah, I think so. Protocol is D8 only, with telemetry.
        Answered by RonildoSax on 12/06/2023Helpful (0)
      • 0
        Q: Was half the price of the xm plus not anY more
        A:
        Maybe will have half price on flash sale or another promotion.
        Answered by TreN0 on 05/10/2021Helpful (0)
      • 0
        Q: is this compatible with Flysky RC FS-i6X Radio Transmitter?
        A:
        Will not work with FLYSKY. FRSKY radios only
        Answered by tweb on 09/12/2021Helpful (0)
      • 0
        Q: Good day! Tell me, no where can I find the answer. RadioMaster R81 receiver, three pins - SBUS, where are two pins without designation connected, what are they for? Thank you!
        A:
        i dont know to .i only use 3 pins in the manual it dont say anything
        Answered by starflip25 on 06/03/2022Helpful (0)
      • 0
        Q: Will this receiver Work with the New Betafpv LiteRadio 2SE ?
        A:
        if it can work
        Answered by RISCORIX on 19/06/2023Helpful (0)
      • 0
        Q: Is this a “Full range” receiver like the XM+?
        A:
        Yes, it's full range receiver!
        Answered by TreN0 on 05/10/2021Helpful (0)
      • 0
        Q: Is it compatible with a Taranis x9 Lite?
        A:
        If it should work perfectly
        Answered by RISCORIX on 25/02/2024Helpful (0)
      • 0
        Q: Is it working with à lipo 1s ? As betafpv meteor75 I see that the voltage range of frsky xm plus is from 3,7v (1s lipo limit) and for this r81 the range begin at 4,5v so i'm not sure that it'll work with this configuration. Anyone already tried ?
        A:
        This will definitely work on 1s, Got one on one of my little 1s whoops and it works fine.
        Answered by Madav65 on 27/09/2021Helpful (0)
      • 0
        Q: Will this work with Tyro79 quad and tx12 transmitter?
        A:
        Yes assuming that the tx12 transmitter can talk d8 frsky it is ideal.( I'm not familiar with the tx12) I have a Tyro 79 and it needs a very small receiver as there is very limited room to fit one. The r81 is very small !
        Answered by 1965davidm on 27/01/2021Helpful (0)
      • 0
        Q: Will this receiver work with Betafpv lite 2 radio ?
        A:
        if clear perfectly
        Answered by RISCORIX on 15/11/2022Helpful (0)
      • 0
        Q: Is it compatible with a Hobbyeagle A3super4 stabiliser?
        A:
        if it has a Frsky D8 protocol on the transmitter i.e_all you need to do is match protocol between a transmitter and a receiver
        Answered by SmallAxeBigTree on 05/12/2024Helpful (0)
      • 0
        Q: What additional device do I need if to have the battery voltage displayed on the TX?
        A:
        There are receivers with full telemetry functions, including battery voltage. The best perhaps is the Radiomaster R168. Once the Bind is done between radio and receiver, just go to the menu.
        Answered by simole88 on 22/11/2024Helpful (0)
      • 0
        Q: Is it compatible with Radiomaster 4in1 LTB module?
        A:
        it will work with any radio that accepts the d8 protocol.
        Answered by Kev78 on 18/04/2024Helpful (0)
      • 0
        Q: is it compatible with D8 or D16 D8 is not anymore compatible with the latest opentx version
        A:
        si
        Answered by RISCORIX on 11/03/2024Helpful (0)
      • 0
        Q: Will this receiver work with the FS-TH9X radio?
        A:
        not that station works flysky and the R81 is frsky
        Answered by RISCORIX on 10/11/2023Helpful (0)
      • 0
        Q: Is it compatible with sjrc f11 pro?
        A:
        I don't believe the truth. I don't know what protocol this drone works on but I don't think I
        Answered by RISCORIX on 21/07/2023Helpful (0)
      • 0
        Q: does this work with the eachine wizard x220s
        A:
        not with an Omnibus FC and not with an iF6 Transmitter
        Answered by DerStefan on 09/07/2023Helpful (0)
      • 0
        Q: will this work on a omp 2 helicopter
        A:
        yes.
        Answered by Obnubilate on 19/08/2022Helpful (0)
      • 0
        Q: will this reciever....bind to t8sg radio?
        A:
        if it should work perfectly the t8 has module 4-1
        Answered by RISCORIX on 08/08/2022Helpful (0)

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