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BPF 70/...-125

Band Pass FiltersBPF 70/...-125

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 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 available as an option.

Specifications

Electrical
Model BPF 70/1-125 BPF 70/2-125 BPF 70/3-125
Frequency 380 - 470 MHz 380 - 470 MHz 380 - 470 MHz
Max. Input Power 300 W @ 0.5 dB IL
125 W @ 2.0 dB IL		 300 W @ 1.0 dB IL
125 W @ 4.0 dB IL		 300 W @ 1.5 dB IL
125 W @ 6.0 dB IL
Insertion Loss Adjustable
0.4 - 2.0 dB		 Adjustable
0.8 - 4.0 dB		 Adjustable
1.2 - 6.0 dB
Impedance 50 Ω 50 Ω 50 Ω
Attenuation See diagram 1 See diagram 2 See diagram 3
VSWR < 1.5:1 < 1.5:1 < 1.5:1
Mechanical
Connection(s) N(f) N(f) N(f)
Dimensions ø125 x 300 mm /ø4.92 x 11.81 in. L: 125 x W: 250 x H: 300 mm /
L: 4.92 x 9.84 x H: 11.81 in.		 L: 125 x W: 375 x H: 300 mm /
L: 4.92 x 14.76 x H: 11.81 in.
Weight Approx. 1.2 kg / 2.65 lb Approx. 2.7 kg / 5.95 lb Approx. 4.3 kg / 9.48 lb
Environmental
Operating temperature range -30 °C to +60 °C -30 °C to +60 °C -30 °C to +60 °C
Frequency Stability 1.5 ppm/° C (approx.) 1.5 ppm/° C (approx.) 1.5 ppm/° C (approx.)

Diagram and Mounting

TYPICAL RESPONSE CURVES

Ordering Designations

Model Product No.
BPF 70/1-125 200000962
BPF 70/2-125 200001049
BPF 70/3-125 200001050

Typical response curves

BPF 70!1 125 insloss GB
Diagram 1

Typical response curves

BPF 70!2 125 insloss GB
Diagram 2

Typical response curves

BPF 70!3 125 insloss GB
Diagram 3

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