Typical response curves
Figure 1
BPF 3/…-125
Band-Pass Filters for the 130 MHz Band
Description
- 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.
Specification
| 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.
|
Ordering Codes
| Model | Product No. | Max. Input Power | Insertion Loss |
|---|---|---|---|
|
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 |
Additional Information
Figure 2
Figure 3
PROCOM A/S reserves the right to
amend specifications without prior notice
PROCOM A/S • Smedetoften 12
DK 3600 Frederikssund • Denmark
Generated : 2026-06-24
Version 1