SONY AIR-7 AIRCRAFT RADIO SCANNER, AIR-7 Receiver - partially functional.

SONY AIR-7 AIRCRAFT RADIO SCANNER, AIR-7 Receiver - partially functional.

SONY AIR-7 AIRCRAFT RADIO SCANNER - working, AIR-7 Receiver - read description.

Item comes with power adapter. Not original but correct output voltage.

Unit powers on with both batteries and power adapter but volume is extremely low.  Could be an easy fix for someone familiar.