Is it possible to see the RSSI output level of the WA-RX-03S?

The WA-RX-03S does not have a pin for RSSI output, but there is a test point for obtaining the RSSI output from the internal IC. TP6 on the PCB is a test point for RSSI output, but it is variable and inaccurate, and suitable only as a guide.

Refer to a block diagram (page 10) in the operation guide.