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Bird - The RF Experts
11-37 Series
11-37 Series

11-37 Series, 144-174 MHz, Bandpass Cavity Filters pass one narrow band of frequencies and attenuates all others with increasing attenuation above and below the pass frequency. It is equivalent to a parallel-tuned circuit and is most often used for general transmitter spurious clean-up or a sharpening of a single receiver front end selectivity with or without amplification. TX RX bandpass cavities (4", 6", 8” and 10") have adjustable selectivity characteristics (rotatable loops) to allow a trade-off between insertion loss (0.5-3.0 dB) and selectivity. Maximum power handling is typically determined by insertion loss setting.

  • Various Low-Loss High-Rejection Models to choose from.
  • All Loop Plate/connector assemblies are silver-or Alballoy®-plated for low IM.
  • Welded cavity construction and silver-plated tunable probe and loops give superior pass and reject characteristics.
11-37 Series, Cavity Filters
Model Number Cavity Size, diameter (inches) Number of Cavities Diminsions, H x W x D (inches) Shipping Weight, lbs.
11-37-01 6.625 1 26 x 6.625 x 6.625 15
11-37-02 6.625 2 26 x 6.625 x 6.625 30
11-37-05 10 1 26 x 10 x 10 21
11-37-06 10 2 26 x 10 x 10 44
11-37-09 4 1 15 x 4 x 4 5
Cavity Filters
11-37 Series
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