# Extending tether up to 4km

**URL:** <https://discuss.bluerobotics.com/t/extending-tether-up-to-4km/10096>\
**Category:** General Discussion\
**Tags:** ardusub\
**Created:** [July 5, 2021, 5:05pm UTC](https://discuss.bluerobotics.com/t/extending-tether-up-to-4km/10096 "2021-07-05T17:05:37Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\
**Post date:** [July 6, 2021, 12:45am UTC](https://discuss.bluerobotics.com/t/extending-tether-up-to-4km/10096/3 "2021-07-06T00:45:54Z")

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Hi @sudheeshk,

[Here](https://discuss.bluerobotics.com/search?q=long%20tether)’s a relevant forum search link. [This post](https://discuss.bluerobotics.com/t/run-bluerov-over-fiber-optic-tether/3355) looks to be particularly relevant, but others there likely are too.

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