# EM7455, termination resistor at Aux necessary?

**URL:** <https://forum.sierrawireless.com/t/em7455-termination-resistor-at-aux-necessary/24809>\
**Category:** MC/EM Series\
**Created:** [September 7, 2021, 7:44am UTC](https://forum.sierrawireless.com/t/em7455-termination-resistor-at-aux-necessary/24809 "2021-09-07T07:44:48Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![diewet](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@diewet](https://forum.sierrawireless.com/u/diewet)\
**Post date:** [September 7, 2021, 7:44am UTC](https://forum.sierrawireless.com/t/em7455-termination-resistor-at-aux-necessary/24809/1 "2021-09-07T07:44:48Z")

</div>

I use an EM7455 which has antenna connectors for Main, GPS and Aux. At Aux no antenna is connected. Is it necessary to use a terminating resistor? Thanks for your support.

---

<div class="post-metadata">

**Author:** ![myip](https://avatars.discourse-cdn.com/v4/letter/m/838e76/32.png) [@myip](https://forum.sierrawireless.com/u/myip)\
**Post date:** [September 8, 2021, 7:59am UTC](https://forum.sierrawireless.com/t/em7455-termination-resistor-at-aux-necessary/24809/2 "2021-09-08T07:59:31Z")

</div>

You can disable RX diversity by AT!RXDEN=0. Please refer to the AT command guide 4117727 about the AT!RXDEN for the details.