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BPBR 4/66-HX-150

12-cavity Mobile or Base Station Pass-reject Filter for the 68 - 108 MHz Band
Description
  • This type of filter uses 12 large 40 x 40 mm cavities all with 3.5 mm silverplated helical resonators, diameter 19 mm.
  • Using these large helicals and cavities means higher Q-value and possibility of using very small spacing between pass and reject.
  • Using large helicals and cavities also means higher power handling – up to 70 W with 1.5 dB insertion loss and 100 W with 1 dB insertion loss.
  • BPBR 4/66-HX-150 is divided into two sub-bands:
  • Pass 68 – 78 MHz or Pass 78 – 86.375 MHz. The reject is
  • in both cases 87.6 – 108 MHz. Other tuning ranges on demand.
  • The cavities are made of extruded aluminium, the chassis of passivated steel. All coaxial cables are the semirigid-type and teflon is used in connectors and cables.
  • The filter is coated with black vinyl to prevent corrosion.
  • Please specify pass and reject frequencies when ordering.
Specification
Electrical
Model BPBR 4/66-HX-150
Frequency 68 – 108 MHz
Max. Input Power 100 W @ 1 dB insertion loss
Min. Duplex Spacing 800 kHz @ 2.4 dB insertion loss
2 MHz @ 1.6 dB insertion loss
Insertion Loss @ 800 kHz spacing : 2.4 dB
@ 1.5 MHz spacing : 2.0 dB
@ 2.0 MHz spacing : 1.6 dB
Impedance 50 Ω
Reject Attenuation @ 800 kHz spacing : min. 60 dB
rest of 87.5 – 108 MHz : min. 55 dB
VSWR ≤ 1.5:1
Environmental
Frequency Stability Approx. 8 ppm / °C
Operating temperature range -30 °C to +60 °C
Mechanical
Connection(s) N(f)
Dimensions 200 x 250 x 95 mm / 7.87 x 9.84 x 3.74 in.
Weight Approx. 2.3 kg / 5.07 lb.
Ordering Codes
Model Product No.
12-cavity Mobile or Base Station Pass-reject Filter for the 68 – 108 MHz Band 200001429
Diagrams

TYPICAL RESPONSE CURVES

PROCOM A/S reserves the right to amend specifications without prior notice
PROCOM A/S • Smedetoften 12 DK 3600 Frederikssund • Denmark
Generated : 2026-06-24 Version 1