by RCModelReviews » Thu Apr 19, 2012 3:19 am
I doubt that you can. With most 2.4GHz receivers there is no RSSI voltage like there was with the old long-wire gear.
The RSSI value is stored as a numeric value in a register inside the processor and not as an analog voltage.
Even those receivers that do offer an RSSI output (like some of the FrSky ones), it is not a straight analog voltage but a series of pulses that are varied to produce an "average" level which reflects the RSSI value. You still have to use a resistor/capacitor network to smooth out (integrate) these pulses into a straight analog voltage.
RCModelReviews.com, just the facts.