# 如何设置 BLE 广播发射功率

**URL:** <https://forum.amebaiot.com/t/ble/1737>\
**Category:** BT\
**Tags:** rtl8720cx\
**Created:** [March 8, 2023, 5:34am UTC](https://forum.amebaiot.com/t/ble/1737 "2023-03-08T05:34:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sky](https://avatars.discourse-cdn.com/v4/letter/s/f4b2a3/32.png) [@Sky](https://forum.amebaiot.com/u/Sky)\
**Post date:** [March 8, 2023, 5:34am UTC](https://forum.amebaiot.com/t/ble/1737/1 "2023-03-08T05:34:30Z")

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请问如何设置 BLE 广播的发射功率？芯片是 RTL8720CM，SDK 是 Ameba ZII

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**Author:** ![wyy](https://avatars.discourse-cdn.com/v4/letter/w/bc8723/32.png) [@wyy](https://forum.amebaiot.com/u/wyy)\
**Post date:** [March 9, 2023, 8:40am UTC](https://forum.amebaiot.com/t/ble/1737/2 "2023-03-09T08:40:44Z")

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@Sky

BLE 的无线发射功率是和 WiFi 共享的，默认设置已经调到合法限制了。  
BLE 广播也还可以设置频道，时间间隔，这些设置也可以影响广播能不能被收到。