ntify with air- . craft nationality and registration mark and date work completed.) ' • . _.. • • • , . . . . VLF/ADF coupler," , GNS 500A P/N 111305.±.2 S/N 120 Weight 1.5 2 Lbs. , • for coupling ADP sense antenna' to existing VLF. This unit is T.5.O. C94 approved, This -Coupler installed on a-sack-,--attached- be