TCI Model 645

20 to 3,000 MHz Compact, High-Performance VHF/UHF DF and Spectrum Monitoring Antenna

The Model 645 VHF/UHF DF and Spectrum Monitoring Antenna is designed for applications requiring a compact, accurate, multi-element, direction finding (DF) antenna, combined with a sensitive omnidirectional monitoring antenna. The 645 allows broadband operation from 20 to 3,000 MHz when used in TCI’s Spectrum Monitoring System (SMS) or COMINT DF. Typical DF accuracy is 2 degrees (RMS), 1 degree in a reflection-free environment. The 645 supports calibrated signal amplitude measurements over the full frequency range, and includes built-in self-test (BIST) for automatic testing and verification of the antenna’s operational status.

  • 20 to 3,000 MHz broadband antenna for DF, monitoring, and metrics
  • Rugged, lightweight construction for easy installation and long life
  • Ideal for transportable, mobile, covert and portable applications
  • Smaller size alternative to the classic TCI 641 Antenna*
  • Unique design provides optimum balance between compact size and good sensitivity over wide frequency range
  • Includes built-in test and calibration unit, as well as magnetic flux gate compass

* US Patent No. 5,990845

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