I have RSSI working but values have big variations, I have a Hitec Aurora Tx with a HK Rx connected with ppm, and RSSI wire from pixracer plugged in Rx rssi signal. I’m not shure if I need something filtering like this http://ardupilot.org/copter/docs/common-rssi-received-signal-strength-indication.html?highlight=rssi or another thing to connect, thank’s