> For the complete documentation index, see [llms.txt](https://www.multi-module.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.multi-module.org/using-the-module/protocol-details/frsky-rx.md).

# FrSky RX

## Details

**Protocol Number:**  55\
**Autobind:**  No\
**Channel Re-mapping:**  No\
**Extended Limits:**  Yes\
**Failsafe Support:**  Yes\
**Receiver Match:**  Yes\
**Telemetry:**  Yes\
**Option Value:**  Frequency fine tuning

## Notes

Uses the MULTI-Module as a receiver instead of a transmitter.  Compatible with any radio transmitting one of the following protocols:

* FrSkyD/D8
* FrSkyX/D16 v1.xxx (FCC or LBT)
* FrSkyX/D16 v2.1.0 (FCC or LBT)

## Sub Protocols

### 0 - RX

Enables two radios to be linked in a trainer/trainee partnership.  See the Wireless Trainer page for more information.

{% content-ref url="/pages/-LxLIKwcjZhLeU-YFKbM" %}
[Wireless Trainer](/using-the-module/wireless-trainer.md)
{% endcontent-ref %}

The FrSky protocol used on the transmitting radio is detected automatically at bind time.

{% hint style="warning" %}
The same **Receiver Number** must be used on the trainer and trainee radios.
{% endhint %}

{% hint style="danger" %}
Frequency tuning is required for this protocol. If the RF Fine Tune value is 0 the receiver protocol will fine-tune itself, any other value will be used as set. See the [Frequency Tuning page](/using-the-module/frequency-tuning.md) for more details.
{% endhint %}

### 1 - CloneTX

This subprotocol makes a clone of a the unique identifier of a radio transmitting one of the supported FrSky protocols.

There are three memory 'slots' available for cloning:

* 1 slot for D8 cloning
* 1 slot for FrSkyX (D16v1) cloning 
* 1 slot for FrSkyX2 (D16v2.1.0) cloning

{% hint style="info" %}
The same transmitter or different transmitters can be cloned into each slot, but only one transmitter ID is stored per slot.
{% endhint %}

If you use the Cloning Procedure with a radio transmitting the D8 protocol, it will be saved in the D8 slot.  Likewise for D16v1 and D16v2.1 . 

Once a transmitter ID is cloned you can use the cloned ID for any model by using the FrSkyD/X/X2 'Cloned' sub-protocol option.  This way you can have models working with the original MULTI-Module identifier and models which are shared by both the cloned TX and MPM.

{% hint style="success" %}
OpenTX 2.3.8 or later is required to use cloned transmitter IDs with the MULTI-Module.
{% endhint %}

#### Cloning Procedure

1. On the radio to receive the cloned ID, configure a new model with the **FrSky RX** protocol, sub-protocol **CloneTX**
2. On the radio to be cloned, select (or configure) a model which uses the protocol you want to clone the ID from (FrSkyD/D8, FrSkyX/D16, etc.)
3. Place both radios in Bind mode
4. Wait for the bind to complete

#### Using the Cloned ID

1. Select or create a model where you want to use the cloned ID
2. Select the protocol which was cloned (FrSkyD/D8, FrSkyX/D16, etc.)
3. Select the sub-protocol **Cloned**

#### Notes:

* **FrSkyD/D8** - the Receiver Number which was used during the the cloning procedure is used.  Changing the Receiver Number has no effect
* **FrSkyX/D16** - the Receiver Number must be set to match the value on the original transmitter