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BPF 2/4-…

Band-Pass Filter for the 160 MHz Band
Description
  • The BPF 2/4-… is a 4-helical resonator band-pass filter with aperture 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.
  • The BPF 2/4-C (C = cable) can be installed directly into the PRO-AR4G-N, PRO-AR8G-N and PRO-AR16G-N receiver multicouplers as a preselector.
  • When installed in the output of a transmitter, the BPF 2/4 reduces spurious signals.
  • The BPF 2/4-… is adjustable over the range 144 – 175 MHz.
  • Very compact due to use of helical resonators.
  • Careful choice of materials ensures reliable performance over a wide temperature range.
  • Extruded aluminium sections, steel racks and coaxial cables and connectors with teflon insulation ensure good mechanical strength.
  • The filter is coated with black vinyl to prevent corrosion.
Specification
Electrical
Model BPF 2/4-…
Filter Type Band-pass filter
Frequency 144 – 175 MHz
Max. Input Power 35 W
Insertion Loss ≤ 1.5 dB (at fc)
Impedance 50 Ω
Reject Attenuation See curves
VSWR < 1.5:1
Bandwidth Can be ordered with 2, 4 or 6 MHz
Environmental
Operating temperature range -30 °C to +60 °C
Mechanical
Connection(s) N(f)
(BNC(f), TNC(f), UHF(f) or SMA(f)
on request)
Historic Brand Amphenol Procom
Dimensions 165 x 104 x 33 mm / 6.5 x 4.1 x 1.3 in.
Weight Approx 0.5 kg / 1.10 lb.
Ordering Codes
Model Product No. FrequencyAdditional Information

BPF 2/4-2-N(f)

 200000845 2 MHz N(f)

BPF 2/4-4-N(f)

 200000816 4 MHz N(f)

BPF 2/4-6-N(f)

 200002090 6 MHz N(f)
Additional Information
Typical response curves

2 MHz

4 MHz

6 MHz

Mounting Details

BPF 2!4 holeplacing

All dimensions are given in mm [in.]

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