# \#air

**URL:** https://forums.digi.com/tag/air/3591.md

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## [Radio transmission speed ...](https://forums.digi.com/t/radio-transmission-speed/19026)

<div class="topic-metadata">

**Author:** [@NewXBeeProUser](https://forums.digi.com/u/NewXBeeProUser)\
**Replies:** 1\
**Last updated:** [December 29, 2017, 10:23am UTC](https://forums.digi.com/t/radio-transmission-speed/19026 "2017-12-29T10:23:19Z")

</div>

Hi everybody, Is there a relationship between the transmission speed on the serial port on a XbeePro S1 and the radio transmission speed, or is the speed on the air constant ? Tks and regards.