BRF 4/…-250
Band-Reject Filters for the 80 MHz
Description
- High power base station band-reject filters for the 66 – 88 MHz range.
- The use of large ø250 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. 8000.
- High frequency stability on temperature and power.
- 19” mounting brackets are available as an option.
Specification
| Electrical | |
| Model |
BRF 4/1-250BRF 4/2-250BRF 4/3-250
|
|---|---|
| Frequency | 66 – 88 MHz |
| Max. Input Power |
350 W @ 0.5 dB IL 200 W @ 1.0 dB IL350 W @ 1.0 dB IL 200 W @ 2.0 dB IL350 W @ 1.5 dB IL 200 W @ 3.0 dB IL
|
| 1 dB Notch Bandwidth | 1 % of fc |
| Impedance | 50 Ω |
| 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 |
ø250 x 1200 mm / ø9.84 x 47.24 in.L:250 x W:500 x H:1200 mm / L:9.84 x W:19.68 x H:47.24 in.L:250 x W:600 x H:750 mm / L:9.84 x W:23.62 x H:29.52 in.
|
| Weight |
Approx. 8.6 kg / 18.96 lb.Approx. 17.5 kg / 38.58 lb.Approx. 26.6 kg / 58.64 lb.
|
Ordering Codes
| Model | Product No. | Model |
|---|---|---|
|
BRF 4/1-250 |
200001923 | BRF 4/1-250 |
|
BRF 4/2-250 |
200001924 | BRF 4/2-250 |
|
BRF 4/3-250 |
200001212 | BRF 4/3-250 |
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