# Trainer

The **Trainer** screen in Radio Settings is used to configure how the radio in Master mode will handle the signals from the radio in Slave mode.

<figure><img src="https://4127893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG9cXG2SsywqpT8oP5rLH%2Fuploads%2FqfOyPYxGq2McR0rSg8tt%2Ftrainer2.jpg?alt=media&#x26;token=9332a0ee-959c-4375-845e-7635a9a7d002" alt=""><figcaption><p>Trainer screen in Radio Settings</p></figcaption></figure>

For each of the four main control inputs (Ail, Ele, Thr, Rud), the following options can be configured (for each row, from left to right).

* **Mode -** How the instructor’s radio will handles the signals from the student's radio&#x20;
  * **OFF** - Stick values from the radio in Master mode will be used - no input from the radio in Slave mode.
  * **+=** Adds the stick values from both the radios in Master and Slave modes.
  * **:=** Replaces the stick values from the radio in Master mode with the stick values from the radio in Slave mode. (Default)
* **Source channel** - The channel from the radio in Slave mode that is mapped the control input.
* **Weight** - Percentage of stick travel to use of the radio in Slave mode. Use negative values to change the stick direction.
* **Cal (calibrate)**- Sets the center stick value of the radio in Slave mode.
* **Multiplier** - This value changes the weight of all the sticks together.&#x20;

{% hint style="info" %}
The trim from the radio in Master mode is usually used. Set the trims on the radio in Slave mode to their center.
{% endhint %}

{% hint style="info" %}
The radio in Master mode is the one that gets bound to the model receiver.
{% endhint %}