# Enabling Auto Gain

**URL:** <https://discussions.flightaware.com/t/enabling-auto-gain/79065>\
**Category:** ADS-B Flight Tracking\
**Created:** [September 4, 2021, 7:32pm UTC](https://discussions.flightaware.com/t/enabling-auto-gain/79065 "2021-09-04T19:32:29Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![abcd567](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/abcd567/32/113769_2.png) [@abcd567](https://discussions.flightaware.com/u/abcd567)\
**Post date:** [October 12, 2021, 5:48pm UTC](https://discussions.flightaware.com/t/enabling-auto-gain/79065/20 "2021-10-12T17:48:58Z")

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> [@thomascundy](#):
>
> how long does adaptive gain take to restore again?

at my installation, it checks and [readjusts every 3 hour](https://discussions.flightaware.com/t/adaptive-gain-issues/79445/45).  
If dip in gain is just after the adaptive gain has checked, it will take about 3 hours to restore.  
If the dip in gain is say 2.5 hrs after the last adaptive check, i.e. the next adaptive check is after 1/2 an hour, it will be restored in 1/2 an hour.

That was yesterday’s observation. Today the adaptive checked immediately after disturbing signal was removed (about 2 hrs after last check) and restored. Please see graph below, left dip is last evening’s, right dip is today midday’s, which was restored immediately after interference subsided.

 ![image](https://us1.discourse-cdn.com/flex019/uploads/flightaware/original/3X/8/f/8f681cc6ab3f069d633aaea1de4d4057029cd94f.png)

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