You really want to upgrade to 1.15 though, if i'm not mistaken it introduces the oversampling improving reception.

dump1090-mutability 1.15: https://forum.flightradar24.com/thre...dump1090-v1-15

Or just install dump1090-fa. (https://github.com/wiedehopf/adsb-wi...ng-dump1090-fa)
The webinterface is a little different, i'm sure you can find screenshots if you're interested.