-MINISTRY OF INTERIOR, PUBLIC SECURITY DIRECTORATE

-Eastern Province VHF System Design and Planning
-Maintenance of Aerotron VHF MPAC Base Stations
-Maintenance of NOKIA FM4 430 UHF Link/Repeater
-Maintenance of Aerotron/Storno mobile radios
-Maintenance of Command Control Consoles

- MINISTRY OF DEFENSE AND AVIATION, RSAF

-Theory of Operation NOKIA 2Ghz Relay Stations
-Maintenance Procedure of Nokia 2 Ghz Relay Stations
-Overall System design criteria
-Maintenance practices for MNI 18 Ghz HSB microwave