0-147 MHz, Preselectors and Post Selector Filters
0-174 MHz, Preselectors and Post Selector Filters
0-147 MHz, Preselectors and Post Selector Filters
Bird Technologies - The RF Experts

0-174 MHz, Preselectors and Post Selector Filters

Bird Technologies has designed application-specific multi-cavity filter products for use in limiting the bandwidth in front of a multiple-receiver system (Preselector) or after a multiple-transmitter system (Post Selector). Size and complexity range from a model built from three helically-loaded 1.3-inch rectangular resonators for relatively low-selectivity receive-only applications, where 2 dB of loss can be tolerated, to four 6.625-inch cavities that can handle 400 watts with high selectivity and loss of 1 dB or less.

Check up to five products to compare
  Item No Item Name RF Power Number of Cavities Resonators Pass Bandwidth
  89-36-03A 132-150 MHz, Preselector 125 W 4 x 4" 0.5 to 2.0 MHz
  89-37-01K 144-174 MHz, Preselector (Watts) RX-Only 3 x LC 4 to 10 MHz
  89-37-06A 144-174 MHz, Preselector 125 W 4 x 4" 0.5 to 2.0 MHz
  89-37-06C 144-174 MHz, Preselector 125 W 4 x 4" 0.5 to 2.0 MHz
  89-37-13A 144-174 MHz, Preselector 400 W 4 x 6.625" 0.5 to 2.0 Mhz