# EM9291 - support to 3 band carrier aggregation in 5G

**URL:** <https://forum.sierrawireless.com/t/em9291-support-to-3-band-carrier-aggregation-in-5g/34320>\
**Category:** MC/EM Series\
**Created:** [January 13, 2025, 4:23pm UTC](https://forum.sierrawireless.com/t/em9291-support-to-3-band-carrier-aggregation-in-5g/34320 "2025-01-13T16:23:49Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![otto.silveira](https://avatars.discourse-cdn.com/v4/letter/o/b5e925/32.png) [@otto.silveira](https://forum.sierrawireless.com/u/otto.silveira)\
**Post date:** [January 13, 2025, 4:23pm UTC](https://forum.sierrawireless.com/t/em9291-support-to-3-band-carrier-aggregation-in-5g/34320/1 "2025-01-13T16:23:50Z")

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Hi, I am trying to validate whether the EM9291 module supports 5G 3 band carrier aggregation. When using AT!RFCOMBOS? command, we only find 2 band combinations in 5G bands such as:

N79A[100x4];A[100x2]+N78A[20x4]

But we don’t see any 3-band or more combinations at all. Does anyone know if that is supported?

Kind regards,

Otto.

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [January 13, 2025, 4:26pm UTC](https://forum.sierrawireless.com/t/em9291-support-to-3-band-carrier-aggregation-in-5g/34320/2 "2025-01-13T16:26:02Z")

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I remember EM9291 does not support that

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**Author:** ![otto.silveira](https://avatars.discourse-cdn.com/v4/letter/o/b5e925/32.png) [@otto.silveira](https://forum.sierrawireless.com/u/otto.silveira)\
**Post date:** [January 13, 2025, 4:40pm UTC](https://forum.sierrawireless.com/t/em9291-support-to-3-band-carrier-aggregation-in-5g/34320/3 "2025-01-13T16:40:08Z")

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Thanks for the quick reply! Do you know any Sierra Wireless document that states that?

Kind regards,

Otto.

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [January 13, 2025, 4:42pm UTC](https://forum.sierrawireless.com/t/em9291-support-to-3-band-carrier-aggregation-in-5g/34320/4 "2025-01-13T16:42:37Z")

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> [@otto.silveira](#):
>
> Do you know any Sierra Wireless document that states that?

You need to ask for a RFCOMBO document (e.g. SWIX65C\_02.17.02.00\_EM9291\_rfcombos.xlsx) from the distributor

BTW, you should also check another module EM9293, I remember it supports this feature