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BPF 70/…-250

Band-Pass Filters for the 450 MHz Band
Description
  • High power base station band-pass filters for the 380 – 470 MHz range.
  • The use of large ø250 mm cavities means a high Q, resulting in a very narrow passband.
  • The large dimensions also mean a high power rating.
  • Unloaded Q of a single cavity is approx. 8000.
  • High frequency stability on temperature and power.
  • 19” mounting brackets are included for BPF 70/2-250 and BPF 70/3-250 models.
Specification
Electrical
Model
BPF 70/1-250BPF 70/2-250BPF 70/3-250
Frequency 380 – 470 MHz
Max. Input Power
350 W @ 0.5 dB IL
150 W @ 2.0 dB IL350 W @ 1.0 dB IL
150 W @ 4.0 dB IL350 W @ 1.5 dB IL
150 W @ 6.0 dB IL
Insertion Loss
Adjustable 0.5 – 2.0 dBAdjustable 0.8 – 4.0 dBAdjustable 1.2 – 6.0 dB
Impedance 50 Ω
Attenuation
See figure 1See figure 2See figure 3
VSWR < 1.5:1
Environmental
Frequency Stability Approx. 1.5 ppm / °C
Operating temperature range -30 °C to +60 °C
Mechanical
Connection(s) N(f)
Historic Brand Procom
Dimensions
ø250 x 400 mm
ø9.84 x 15.74 in.L : 250 x W : 500 x H : 400 mm
L : 9.84 x W : 19.68 x H : 15.74 in.L : 250 x W : 750 x H : 400 mm
L : 9.84 x W : 29.52 x H : 15.74 in.
Weight
Approx. 2.8 kg / 6.17 lb.Approx. 5.2 kg / 11.46 lb.Approx. 9.6 kg / 21.16 lb.
Ordering Codes
Model Product No. Model

BPF 70/1-250

 200000955 BPF 70/1-250

BPF 70/2-250

 200000963 BPF 70/2-250

BPF 70/3-250

 200000957 BPF 70/3-250
Additional Information
Typical Response Curves

Figure 1

Figure 2

Figure 3

PROCOM A/S reserves the right to amend specifications without prior notice
PROCOM A/S • Smedetoften 12 DK 3600 Frederikssund • Denmark
Generated : 2026-06-25 Version 1