BPF 4/…-250

Band-Pass Filters for the 80 MHz Band

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Electrical
Model	BPF 4/1-250BPF 4/2-250BPF 4/3-250
Frequency	66 – 88 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 0.4 – 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	ø250 x 1200 mm / ø9.84 x 47.24 in.250 x 500 x 1200 mm / 9.84 x 19.69 x 47.24 in.250 x 750 x 1200 mm / 9.84 x 29.53 x 47.24 in.
Weight	Approx. 8.6 kg / 18.96 lb.Approx. 17.5 kg / 38.58 lb.Approx. 26.6 kg / 58.64 lb.

High power base station band-pass filters for the 66 – 88 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 available as an option.

This product doesn’t have any diagrams yet.

Model	Product No.	Model
BPF 4/1-250	200000967	BPF 4/1-250
BPF 4/2-250	200001883	BPF 4/2-250
BPF 4/3-250	200001063	BPF 4/3-250

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Figure 1

Figure 2

Figure 3

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