Made by Rockwell, the VHF fixed frequency 51M80 receiver was made for monitoring aeronautic traffic.
Receiving frequency can be tuned by encoding it on a DB25 plug on the rear of the synthetizer unit.
It can be either powered on 220V or 24V.
As you can see on the pictures below, it is currently tuned to 118.7Mhz which is LFPO TWR (ORLY - ORY).
It will be soon configured to 131.725Mhz as an ACARS monitor receiver.
|51M80 front view|
|51M80 inside view|
Last revision: 2009/06/13