# How to use AUX antenna in MC8705

**URL:** <https://forum.sierrawireless.com/t/how-to-use-aux-antenna-in-mc8705/8141>\
**Category:** Development tools\
**Created:** [August 25, 2015, 1:12pm UTC](https://forum.sierrawireless.com/t/how-to-use-aux-antenna-in-mc8705/8141 "2015-08-25T13:12:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![naveen\_shm](https://avatars.discourse-cdn.com/v4/letter/n/65b543/32.png) [@naveen\_shm](https://forum.sierrawireless.com/u/naveen_shm)\
**Post date:** [August 25, 2015, 1:12pm UTC](https://forum.sierrawireless.com/t/how-to-use-aux-antenna-in-mc8705/8141/1 "2015-08-25T13:12:46Z")

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Hi all,  
I am using AirPrime MC8705, there are two antennas one MAIN and one AUX, how to enable AUX antenna?

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**Author:** ![Rex\_alex](https://avatars.discourse-cdn.com/v4/letter/r/73ab20/32.png) [@Rex\_alex](https://forum.sierrawireless.com/u/Rex_alex)\
**Post date:** [September 1, 2015, 9:31am UTC](https://forum.sierrawireless.com/t/how-to-use-aux-antenna-in-mc8705/8141/2 "2015-09-01T09:31:49Z")

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Hi,  
you can refer !RXDEN command… you can refer Extended At command guide for more information.

[http://source.sierrawireless.com/resources/airprime/minicard/2130616\_ap\_mcsl\_umts\_lte\_extended\_at\_command\_ref/](http://source.sierrawireless.com/resources/airprime/minicard/2130616_ap_mcsl_umts_lte_extended_at_command_ref/)

Thanks,  
Alex