This read-only value reports the modem's current received signal strength specifically on the EV-DO radio, distinct from the 1xRTT reading and used by the notification system when an EV-DO-related alert fires. An admin monitors this specifically to assess EV-DO (high-speed data) coverage quality, which can differ from 1xRTT coverage at the same location since the two use different carrier frequencies. For example, an admin seeing poor throughput on an EV-DO connection would check this RSSI value to confirm whether weak EV-DO signal, rather than backend congestion, is the likely cause.