diydrones/ardupilot — pull request #688 by lukaszkn (2013-11-15 23:41:47+00:00)
Title: Added RSSI_RANGE parameter to rescale rssi input voltage

Added ability to rescale rssi input voltage. Useful for receivers like FrSky which have 3.3V output.

Request issue found here
https://github.com/diydrones/ardupilot/issues/648

Here more
http://diydrones.com/profiles/blogs/apm-rssi-3-3v-input