Bird - The RF Experts
89-70-28A
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89-70-28A

89-70-28A, 456-460 MHz /466-470 MHz, Preselector
Bird has designed application-specific multi-cavity and combline filter products for use in limiting the bandwidth in front of a multiple-receiver system (Preselector) or after a multiple-transmitter system (Post Selector).

  • Several models available to match your specific application.
  • All filters are factory tuned to meet specific frequency channel requirements
  • Temperature compensation keeps product tuned to specification from -30 to +60° C.
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89-70-28A
product specifications:
Item No
89-70-28A
Item Name
456-460 MHz /466-470 MHz, Preselector
RF Power
Receive Only
Number of Cavities-Resonators
Dual 8-Resonator
Pass Bandwidth
4/4 MHz
Frequency Range
456-460 MHz
466-470 MHz
Specification Bandwidth
4/4 MHz
Typical Insertion Loss
4.0 dB
Max Insertion Loss at Passband Edge
5.6 dB
Typical Selectivity
40 dB @ ± 3.0 MHz
Return Loss
12 dB
VSWR
1.66:1
Temperature Range
-30 to +60 °C
Connectors
N
Dimensions H x W x D
14" x 19" x 10"
(356 x 483 x 254 mm)
Mounting
19" EIA Rack Mount
Shipping Weight
27 lbs. (12.2 kg)