57-45-04 Combline Filter/Preselector

57-45-04 Combline Filter/Preselector

Frequency Range: 450-470 MHz

Designed for minimizing interference from adjacent channels and outside systems

  • Temperature-compensated to ensure frequency stability
  • High attenuation to minimize desense and interference from adjacent systems
  • Silver-plated loops and tuning rods
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Specify working frequency, bandwidth, power and isolation required

Description

The combline filters are designed for minimizing interference from adjacent channels and outside systems. They are available in a wide range of bandwiths and frequency splits. Used in front of a wideband receiver multicoupler, the preselectors narrow the passband to the desired bandwidth. Each filter is temperature-compensated for operation between -40ºC to +60ºC. Each filter has silver-plated loops and tuning rods.

Our preselectors are available in a wide range of frequency splits, bandwidth and cavity sizes.

• Temperature  compensation: ensures frequency stability
• High attenuation: minimizes desense and interference from adjacent systems

Other preselectors are also available.  They include comblines and our full line of cavity-based preselectors. Sizes range from the very compact 1” helical filter to the very selective 6.625” cavity preselector. Please contact a technical support technician for consultation.

 

Additional information

Frequency Range, MHz

450-470

Type

Combline

Insertion Loss Bandwidth, dB

3

Pass Bandwidth, MHz

4

Return Loss, dB (VSWR)

20 (1.22)

Typical Selectivity, dB @ MHz

38 @ 5

Temperature Range, ºC

-30 to +60

Input Power, Watts

Rx only

Connectors, Antenna/Output

N-F/N-F

Finish

Black

Dimensions H x W x D, in (mm)

5.25 x 19 x 4.5 (133 x 686 x 114)