BPF 4/…-125

Band-Pass Filters for the 80 MHz Band

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BPF 4/...-125

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BPF 4/…-125
Electrical
Model
BPF 4/1-125BPF 4/2-125BPF 4/3-125
Frequency 66 – 88 MHz
Max. Input Power
300 W @ 0.5 dB IL
125 W @ 2.0 dB IL300 W @ 1.0 dB IL
125 W @ 4.0 dB IL300 W @ 1.5 dB IL
125 W @ 6.0 dB IL
Insertion Loss
Adjustable 0.4 – 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)
Max. RPM 200 (On tuning rod)
Historic Brand Amphenol Procom
Dimensions
ø125 x 1200 mm /
ø4.92 x 47.24 in.125 x 250 x 1200 mm /
4.92 x 9.84 x 47.24 in.125 x 375 x 1200 mm /
4.92 x 14.76 x 47.24 in.
Weight
Approx. 4.3 kg / 9.48 lb.Approx. 9.3 kg / 20.50 lb.Approx. 13.7 kg / 30.20 lb.
  • High power base station band-pass filters for the 66 – 88 MHz range.
  • The use of large ø125 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. 4500.
  • High frequency stability on temperature and power.
  • 19” mounting brackets are included on BPF 4/2-125 and BPF 4/3-125.

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Model Product No. Model Add To Quote

BPF 4/1-125

 200000987 BPF 4/1-125

BPF 4/2-125

 200000988 BPF 4/2-125

BPF 4/3-125

 200001881 BPF 4/3-125

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TYPICAL RESPONSE CURVES

Figure 1

bpf 4 1 125 insloss GB

Figure 2

bpf 4 2 125 insloss GB

Figure 3

bpf 4 3 125 insloss GB