pxt-calliope/docs/reference/radio/send-string.md

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# Send String
Sends a string to other micro:bits in the area connected by radio.
```sig
radio.sendString("Hello!")
```
### Parameters
* `text` is a [String](/reference/types/string) to send by radio.
### Example: Two-way radio
If you load this program onto two or more micro:bits, you can send a code word from one of them to the others by pressing button `A`.
The other micro:bits will receive the code word and then show it.
```blocks
input.onButtonPressed(Button.A, () => {
radio.sendString("Codeword: TRIMARAN")
basic.showString("SENT");
})
radio.onDataReceived(() => {
basic.showString(radio.receiveString());
});
```
### ~hint
A radio that can both transmit and receive is called a _transceiver_.
### ~
### See also
[receive string](/reference/radio/receive-string), [on data received](/reference/radio/on-data-received)