BPF 3/3

Band-Pass Filter for the 112 – 136 MHz Band

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Data Sheet
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BPF 3/3
Electrical
Model BPF 3/3
Filter Type Band-pass filter
Frequency 112 – 136 MHz
Max. Input Power 50 W
Insertion Loss ≤ 1.0 dB (typ.)
Impedance 50 Ω
Reject Attenuation See curve
VSWR < 1.5:1
Bandwidth See curve
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 160 x 77 x 33 mm / 6.3 x 3.03 x 1.3 in.
Weight Approx. 0.42 kg / 0.93 lb.
  • The BPF 3/3 is a 3-helical resonator band-pass filter with aperture-coupling between the resonators.
  • This filter can be used as a preselector to protect a receiver against interference from transmissions out of the passband, or it can be used to reduce spurious output from a transmitter with up to 50 W output power.
  • The filter can be tuned within the entire 112 – 136 MHz band. It has very small dimensions owing to the use of helical resonators. Careful design and choice of materials ensure reliable operation over a wide temperature range.
  • The housing is made of extruded aluminium, the chassis of steel, and teflon insulation has been used in the coaxial cables and in the connectors.
  • BPF 3/3 is coated with black vinyl to prevent corrosion.

TYPICAL RESPONSE CURVES

Model Product No. Add To Quote
Band-Pass Filter for the 112 – 136 MHz Band 200000853

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