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Radioboss JP4IN1 Multi-Protocol Radio Transmitter Module

Radioboss JP4IN1 Multi-Protocol Radio Transmitter Module - Supports OpenTx Serial and PPM Mode



PDF icon Manual1.99 MB
Binary Data PPM Firmware110.83 KB
Package icon Flash Multi Software6.18 MB

This multiprotocol module incorporates four RF chips into one transmitter module and supports pretty much all of the communication protocols used in the RC hobby. With it you can control everything from a single radio; from toy grade Syma models to FrSky racing drones or Spektrum BNF aircraft. A full list of compatible protocols can be found in the JP4IN1 Manual. The module fits JR Size module bays like those on FrSky and JR transmitters. The module has two working modes, Serial and PPM. Serial can be used by radios that support for OpenTX firmware and allow you to set the required protocol from the radio setup menus. PPM mode is for radios that don't run OpenTx, the protocol is set via the rotary switch on the back of the module - please note you will need to re-flash the module to use PPM mode.

Setup Serial Mode (Switch Position Zero - Default Mode):

The operation mode can be used by transmitters that operate with OpenTX 2.2.X, so all FrSky transmitters and other brands too. OpenTX 2.2.X has special support for the Multi-Protocol Module that allows the protocols to be easily selected from the transmitter SETUP menu or Companion.

  • Install module into transmitter’s external module bay
  • Ensure radio is flashed with OpenTX version 2.2.X (Firmware Download) (Flashing Guide)
  • Serial mode is selected by placing the rotary switch to position 0 before powering on the radio.
  • Set default Channel Order (Radio Setup Menu) to AETR
  • In the Setup Menu, disable Internal RF “OFF” and Enable External RF
  • For the External RF Mode select “Multi” then select the required Protocol to match your model
  • Enable Auto Bind for supported models
  • For more information, please refer here

Setup & Binding in PPM Mode (Manual Protocol Selection):

This operation mode is for transmitters that don't support OpenTx firmware.

  • First the module needs to be re-flashed with the PPM firmware. Download the PPM firmware & Flash Multi Software - instructions on how to update the module here.
  • Turn the rotary dial on the module to position 15.
  • Install module into transmitter’s external module bay and enable the PPM output to the bay if required.
  • Consult the PPM Protocol grouping list to find your required protocol - make a note of the group and protocol number. There are five PPM groups, each containing 14 protocols. The flashing sequence of the red LED on the module relates to the PPM group. A single flash indicates group one, a double flash group two, three flashes group three and so on. Press the bind button to cycle between the PPM groups.
  • When the group selection is correct, turn off the radio. 
  • Use the dial to select the required protocol prior to turning the radio back on. For example Spektrum DSMX (11ms) is PPM Group 2, Switch Position 1. 
  • Put your receiver into bind mode and hold the bind button on the module while turning the radio back on. Continue to hold the bind button until bound. It should take no more than 15 seconds.

  • Working voltage: 6-9v
  • Working current: <=100ma
  • Operating frequency: 2.4G ISM band
  • RF power: +22DBM
  • Main control chip: STM32F103CBT6 (128K ROM, 20K RAM)
  • Module bay compatibility: FRSky, Jr and other dimensions: 64x49x33 (without antenna)
  • Net Weight: 42g (including antenna)
  • Software Compatibility: Suitable for radios using OpenTX or er9x/ersky9x
  • Firmware updatable: Yes, via USB.

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