47 lines
1.1 KiB
Markdown
47 lines
1.1 KiB
Markdown
# set Transmit Power
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Make the ``radio`` signal of the @boardname@ stronger or weaker.
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```sig
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radio.setTransmitPower(7);
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```
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The signal can be as weak as `0` and as strong as `7`. Default is ``6``.
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The scientific name for the strength of the ``radio`` signal is
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**dBm**, or **decibel-milliwatts**. A signal strength of `0`
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can be measured as -30 dBm, and a strength of `7` can be
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measured as +4 dBm.
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## Range
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If your @boardname@ is sending with a strength of `7`, and you are in
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an open area without many other computers around, the @boardname@ signal
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can reach as far as 70 meters (about 230 feet).
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## Parameters
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* ``power`` is a [number](/types/number) between ``0`` and ``7`` that means how strong the signal is.
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## Simulator
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This function only works on the @boardname@, not in browsers.
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## Example
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This program makes the ``radio`` send at full strength.
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```blocks
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radio.setTransmitPower(7)
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```
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## See also
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[received packet](/reference/radio/received-packet),
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[send number](/reference/radio/send-number),
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[send value](/reference/radio/send-value),
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[send string](/reference/radio/send-string)
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```package
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radio
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``` |