Airports are large establishments, spread over acres of area with very large concentration of people at any given point of time. Threat levels for Airports and airplanes are always huge and therefore providing security is paramount requirement. Security firms entrusted with the security of airports use two way radios for communication. A message can be conceyed immediately to all the involved teams in case of terror threat. Additionally there are large number of teams working in airport who needs to communicate among themselves. It is not convenient to dial-in every situation. Management staff of airplane operators us two way radios for different purposes. Two way radios are also use for coordination by airport management teams, material handling teams, house keeping teams among others.