BPF 3/…-125

Band-Pass Filters for the 130 MHz Band

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BPF 3/...-125

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BPF 3/…-125
Electrical
Model
BPF 3/1-125BPF 3/2-125BPF 3/3-125
Frequency 116 – 146 MHz
Max. Input Power
350 W @ 0.5 dB IL
125 W @ 2.0 dB IL350 W @ 1.0 dB IL
125 W @ 4.0 dB IL350 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 765 mm /
ø4.92 x 30.12 in.125 x 285 x 765 mm /
4.92 x 11.22 x 30.12 in.125 x 425 x 765 mm /
4.92 x 16.73 x 30.12 in.
Weight
Approx. 3.4 kg / 7.50 lb.Approx. 7 kg / 15.43 lb.Approx. 10.5 kg / 23.15 lb.
  • High power base station band-pass filters for the 116 – 146 MHz range.
  • The use of large ø125 mm cavities gives 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.
  • Mounted on 19” brackets.

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Model Product No. Max. Input PowerInsertion Loss Add To Quote

BPF 3/1-125

 200000974 350 W @ 0.5 dB IL 125 W @ 2.0 dB IL Adjustable 0.4 – 2.0 dB

BPF 3/2-125

 200000968 350 W @ 1.0 dB IL 125 W @ 4.0 dB IL Adjustable 0.8 – 4.0 dB

BPF 3/3-125

 200000596 350 W @ 1.5 dB IL 125 W @ 6.0 dB IL Adjustable 1.2 – 6.0 dB

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Typical response curves

Figure 1

Figure 2

Figure 3