# Extending range on Holybro Sik Radios 915 mhz

**URL:** <https://discuss.px4.io/t/extending-range-on-holybro-sik-radios-915-mhz/42880>\
**Category:** PX4 Autopilot\
**Created:** [December 15, 2024, 12:36am UTC](https://discuss.px4.io/t/extending-range-on-holybro-sik-radios-915-mhz/42880 "2024-12-15T00:36:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![josh8991](https://discuss.px4.io/letter_avatar_proxy/v4/letter/j/dec6dc/32.png) [@josh8991](https://discuss.px4.io/u/josh8991)\
**Post date:** [December 15, 2024, 12:36am UTC](https://discuss.px4.io/t/extending-range-on-holybro-sik-radios-915-mhz/42880/1 "2024-12-15T00:36:12Z")

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Hello, I’m using the Holybro SIK 915 mhz telemetry radios for my fixed wing drone project. Wondering what’s the best antenna’s to use to extend the range to a couple km’s?

Would these antenna’s from TBS help extend the range?  
for the ground radio: [https://www.team-blacksheep.com/products/prod:vas\_longshot\_915](https://www.team-blacksheep.com/products/prod:vas_longshot_915)  
for the receiver radio: [https://www.team-blacksheep.com/products/prod:xf\_immortal\_t\_v2\_ee](https://www.team-blacksheep.com/products/prod:xf_immortal_t_v2_ee)

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**Author:** ![JulianOes](https://discuss.px4.io/user_avatar/discuss.px4.io/julianoes/32/30_2.png) [@JulianOes](https://discuss.px4.io/u/JulianOes)\
**Post date:** [December 17, 2024, 2:02am UTC](https://discuss.px4.io/t/extending-range-on-holybro-sik-radios-915-mhz/42880/2 "2024-12-17T02:02:08Z")

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Are you aware of the ArduPilot SiK docs?  
[https://ardupilot.org/copter/docs/common-3dr-radio-advanced-configuration-and-technical-information.html#power-levels](https://ardupilot.org/copter/docs/common-3dr-radio-advanced-configuration-and-technical-information.html#power-levels)

They are really good, and mention several points to increase range. The obvious one is to increase the power levels, depending on what is allowed in the area you fly in.

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**Author:** ![josh8991](https://discuss.px4.io/letter_avatar_proxy/v4/letter/j/dec6dc/32.png) [@josh8991](https://discuss.px4.io/u/josh8991)\
**Post date:** [December 18, 2024, 3:22am UTC](https://discuss.px4.io/t/extending-range-on-holybro-sik-radios-915-mhz/42880/3 "2024-12-18T03:22:32Z")

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Thanks a lot, I hadn’t seen the ardupilot docs! Those are very helpful, thank you.