Typical Response Curves
BRF 2/…-125
Band-Reject Filters for the 150 MHz Band
Description
- High power base station band-reject filters for the 140 – 175 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.
- Mounted on 19” brackets.
Specification
| Electrical | |
| Model |
BRF 2/1-125BRF 2/2-125BRF 2/3-125
|
|---|---|
| Frequency | 140 – 175 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 600 mm / ø4.92 x 23.62 in.L:125 x W:285 x H:600 mm / L:4.92 x W:11.22 x H:23.62 in.L:125 x W:425 x H:600 mm / L:4.92 x W:16.73 x H:23.62 in.
|
| Weight |
Approx. 1.9 kg / 4.19 lb.Approx. 4 kg / 8.82 lb.Approx. 6.5 kg / 14.33 lb.
|
Ordering Codes
| Model | Product No. | Max. Input Power |
|---|---|---|
|
BRF 2/1-125 |
200001577 | 300 W @ 0.5 dB IL 175 W @ 1.0 dB IL |
|
BRF 2/2-125 |
200001936 | 300 W @ 1.0 dB IL 175 W @ 2.0 dB IL |
|
BRF 2/3-125 |
200001937 | 300 W @ 1.5 dB IL 175 W @ 3.0 dB IL |
Additional Information
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