RSSI (RPD)

[Neorichi]

Is there any way to get the RSSI in dBm?
I found this but it only tells me if it is strong or not...I would like to get the dBM number.
* bool goodSignal = radio.testRPD();
* if(radio.available()){
* Serial.println(goodSignal ? "Strong signal > 64dBm" : "Weak signal < 64dBm" );
* radio.read(0,0);
* }

Thanks