What Is a Mode S Transponder?

Save

Transponders make it much easier for air traffic controllers to keep track of the aircraft in their air space. Transponders transmit important information such as aircraft ID and altitude to ground radar stations.

Types of Radar Used

  • Air traffic control radar facilities use two types of radar. Primary radar, which has many limitations, basically bounces microwave pulses off objects and reads the echo. Secondary radar makes use of a transponder. The transponder responds to an interrogation from radar ground stations, relaying the airplane identification information and altitude.

A/C Transponders

  • Transponders have a number of different modes that respond with certain information. The majority of private planes have an A/C mode transponder. Mode A responds with the airplane identification number assigned to it by air traffic control. Mode C provides the altitude of the aircraft.

Mode S Transponders

  • Mode S transponders relay to the ground station not only a plane's altitude but the plane's aircraft address information assigned by the FAA as well. This aircraft address is a permanent designation that makes identifying the owner of a plane easier. Mode S transponders are more sophisticated and more expensive than a typical transponder.

Common Transponder Types

  • Mode A/C transponders are the most common models used in the United States. Mode S transponders were primarily used by the military in the past but are becoming much more common in private planes.

References

Promoted By Zergnet

Comments

You May Also Like

  • How to Make a Weather Station Model

    Constructing a weather station model can be a satisfying experience, similar to learning a secret language. Weather enthusiasts see these station models...

  • How to Program a Toyota Transponder Chip Key

    If you want to save about 75% on the price of a Toyota transponder chip key, you can buy the key and...

  • How to Program a Ford Focus Key

    The Ford Focus uses two sets of instructions for programming the car's computer to obey remote controls' signals, depending on the car's...

  • How to Remove Transponder Key Coding

    Transponder keys are used in vehicles that have computer chip programming within the vehicle. Typically, transponder keys are already programmed for your...

  • How to Test Transponder Car Keys

    Transponder keys are specialized car keys used on vehicles with internal computer systems. The transponder key is specially programmed with the internal...

  • Aircraft Transponder Requirements

    The U.S. Federal Aviation Administration (FAA) requires that all airplanes and other aircraft must be equipped with a transponder. A transponder is...

Related Searches

Check It Out

How to Travel For Free With Reward Points

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!