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66-88 MHz 4-cavity bandpass filter

BPBR 4/4 N | Amphenol Procom
The Amphenol-Procom 66-88 MHz 4-Cavity Bandpass Filter is a pass-reject filter designed to pass one frequency or frequency band while rejecting another in the immediate vicinity, useful for protecting the receiver from interference from a nearby transmitter. It supports pass-reject spacing from 2 to 16 MHz, maximum power up to 50 W, and offers a compact size with an N(f) connector.
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Description
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Description

The 66-88 MHz 4-cavity bandpass filter is the BPBR 4/4 version with N(f) connector, designed by Amphenol-Procom to pass a frequency or frequency band and reject another adjacent frequency on the high side of the pass frequency. This type of filter is suitable for protecting the receiver against interference generated by nearby transmitters, especially when the distance between the useful signal and the interfering signal is so short that normal band-pass or notch filters are insufficient.

The product is tunable in the 66-88 MHz band, with an 88-108 MHz option, and supports a pass-reject spacing from 2 to 16 MHz. The insertion loss is indicated up to 2.0 dB at 2 MHz spacing and up to 0.6 dB at 16 MHz, with a rejection attenuation greater than or equal to 90 dB and a VSWR less than 1.5:1. The compact design uses high-Q helical resonators with discrete interconnects, in an extruded aluminum housing with a passivated steel frame and black vinyl coating to protect against corrosion.

Key Features

  • 4-cavity band-pass / band-reject filter
  • Frequency range 66-88 MHz, with an option of 88-108 MHz
  • BPBR version with rejection on the high side of the pass frequency
  • Pass-reject spacing 2 to 16 MHz
  • Maximum input power 50 W at 3-16 MHz spacing and 35 W at less than or equal to 3 MHz
  • Insertion loss 0.6 dB to 2.0 dB depending on spacing
  • Higher rejection attenuation or equal to 90 dB
  • Impedance 50 Ohm
  • VSWR less than 1.5:1
  • Connector N(f), with BNC(f) on request
  • Dimensions 152 x 104 x 33 mm
  • Weight approximately 0.43 kg
  • Operating temperature -30 °C to +60 °C

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