Feedback ASD512 Antenna Systems Demonstrator

The Feedback range of Telecommunications training equipment has been designed to provide a modern, efficient approach to training the engineers and technicians working in this field.


  • Fully operational antennas
  • Vivid displays of antenna characteristics
  • Convenient size for classroom
  • Versatile and easy to assemble
  • Complex concepts made easy
  • Reconciles theory and practice

This is a fully operational Antenna System Demonstrator, working at a frequency of 167.2MHz, giving a half-wave element of approximately 90 cm. It has been designed to provide an ideal classroom demonstrator. The system is provided with a kit of parts allowing many types of antenna to be constructed, making the system versatile as a demonstrator of both antenna principles and practice. The system has two hand-held detectors that show relative magnitudes of voltage and current fields around the antenna, and the field strength of the antenna. Practical demonstrations are described in the accompanying manuals, illustrating the principles involved and introducing the student to the various basic concepts of most types of antennas in common use.

Curriculum Coverage
  • Basic theory of radiation
  • Radiating and non-radiating systems
  • Feeders
  • Radiation resistance
  • Drive point impedance and ground resistance
  • Physical and electrical length
  • Directional antennas and radiation patterns
  • Parasitic arrays & antenna gain
  • Antenna with folded elements
  • Slot radiators
  • 3-dimensional polar diagrams
  • Loop antenna

    Additional pictures

    57-200 AntennaLab

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    53-210 Amplifiers and Oscillators Workboard

    53-220 Tuned Circuits and Filters

    53-230 Modulation and Coding Workboard

    Instruments Techno Test inc.

    Instruments Techno Test inc.
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