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Procom BPF 70/4 BNC - Band-Pass Filter for the...

Procom BPF 70/4 BNC - Band-Pass Filter for the 450 MHz Band

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New product without box, with little scratches.


  • The BPF 70/4 is a 4 resonator ¼ λ band-pass filter with inductive coupling between the resonators.
  • This filter can be used as a preselector to protect a receiver from interference from transmitters outside the band-pass limits.
  • When installed at the output of a transmitter, the BPF 70/4 reduces spurious signals.
  • The BPF 70/4 is adjustable over the range 380 - 470 MHz.
  • Careful choice of materials ensures reliable functioning over a wide temperature range.
  • Extruded aluminium sections, steel racks and coax cables and connectors with teflon insulation ensure good mechanical strength.
  • BPF 70/4 is coated with black vinyl to prevent corrosion.
  • The filter is delivered in standard version with 4 MHz bandwidth, other bandwidths can be requested when ordering (up to 10 MHz)


Model BPF 70/4
Filter Type Band-pass filter
Frequency 380 - 470 MHz
Insertion Loss < 1.5 dB
Impedance 50 Ω
Reject Attenuation See curves
SWR < 1.5:1
Maximum Input Power 50 W
Bandwidth 4 MHz - 10 MHz (Specify when ordering)
Connection BNC female
Dimensions 208 (without connectors) x 104 x 33 mm
Weight 0.69 kg / 1.52 lb
Operating Temperature Range -30°C to +60°C

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