BRF 70/…-125

Band-Reject Filters for the 450 MHz Band

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BRF 70/...-125

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BRF 70/…-125
Electrical
Model
BRF 70/1-125BRF 70/2-125BRF 70/3-125
Frequency 380 – 470 MHz
Max. Input Power
300 W @ 0.5 dB IL
175 W @ 1.0 dB IL300 W @ 1.0 dB IL
175 W @ 2.0 dB IL300 W @ 1.5 dB IL
175 W @ 3.0 dB IL
1 dB Notch Bandwidth 1 % of fc
Impedance 50 Ω
Attenuation See diagram
VSWR < 1.5:1
Environmental
Frequency Stability 1.5 ppm/° C (approx.)
Operating temperature range -30 °C to +60 °C
Mechanical
Connection(s) N(f)
Historic Brand Procom
Dimensions
ø125 x 303 mm / ø4.92 x 11.92 in.L:125 x W:250 x H:303 mm / L:4.92 x W:9.84 x H:11.92 in.L:125 x W:375 x H:303 mm / L:4.92 x W:14.76 x H:11.92 in.
Weight
Approx. 1.2 kg / 2.65 lb.Approx. 3 kg / 6.61 lb.Approx. 4.2 kg / 9.26 lb.
  • High power base station band-reject filters for the 380 – 470 MHz range.
  • The use of large ø125 mm cavities means a high Q, resulting in a very narrow notch bandwidth.
  • 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.

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Model Product No. Model Add To Quote

BRF 70/1-125

 200001240 BRF 70/1-125

BRF 70/2-125

 200001941 BRF 70/2-125

BRF 70/3-125

 200001942 BRF 70/3-125

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Typical Response Curves
Figure 1

Figure 2

Figure 3