# Performance Graph Interpretation

**URL:** <https://discussions.flightaware.com/t/performance-graph-interpretation/19835>\
**Category:** ADS-B Flight Tracking\
**Created:** [March 27, 2017, 2:04am UTC](https://discussions.flightaware.com/t/performance-graph-interpretation/19835 "2017-03-27T02:04:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![cpohlad](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/cpohlad/32/93296_2.png) [@cpohlad](https://discussions.flightaware.com/u/cpohlad)\
**Post date:** [March 27, 2017, 2:04am UTC](https://discussions.flightaware.com/t/performance-graph-interpretation/19835/1 "2017-03-27T02:04:54Z")

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So I am trying to determine if my experimentation with adjusting my gain has hurt me or if I am reading too much into it given that it’s a weekend.

![](https://us1.discourse-cdn.com/flex019/uploads/flightaware/original/3X/0/e/0e9f7b51cb78d7e7a2de8e320186cb8b5f904a2e.png)  
I ran the OptimizeADSB python script that was seen here Thursday evening and Friday morning and afternoon. Based on the info I received I changed my gain setting in the piaware-config to 50. I did move the antenna around a bit this weekend and that may also have been affecting the numbers, but trying to get a good gauge on if these numbers look ok. I know that running that script (it runs for a few hours or so) is going to impact my numbers but should I give it a good week day to see if these get better?

If the numbers don’t improve tomorrow I am thinking about commenting out the gain setting in the piaware config.

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**Author:** ![cpohlad](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/cpohlad/32/93296_2.png) [@cpohlad](https://discussions.flightaware.com/u/cpohlad)\
**Post date:** [March 27, 2017, 2:20am UTC](https://discussions.flightaware.com/t/performance-graph-interpretation/19835/2 "2017-03-27T02:20:15Z")

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So I did discover a forum post somewhere else that said you need to adjust your gain value in the /etc/default/dump1090-mutability file as well. I adjusted that gain to 50 as well to match what was in piaware-config. Hopefully that helps!

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**Author:** ![cpohlad](https://sea1.discourse-cdn.com/flex019/user_avatar/discussions.flightaware.com/cpohlad/32/93296_2.png) [@cpohlad](https://discussions.flightaware.com/u/cpohlad)\
**Post date:** [March 27, 2017, 2:43am UTC](https://discussions.flightaware.com/t/performance-graph-interpretation/19835/3 "2017-03-27T02:43:01Z")

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So here are my past 6 hour results since figuring out I needed to change the gain on the dump1090-mutability file. Seems to be better. Does that noise level look ok?

![](https://us1.discourse-cdn.com/flex019/uploads/flightaware/original/3X/4/4/44303b9b84f63b089a2bdb99c8ffe075e0bedd1a.png)