Typical response curves
BRF 70/6-150
Band-reject (notch) filter for the 450 MHz Band
Description
- The BRF 70/6-150 is a 6-resonator notch-filter using full-length ¼ λ cavities.
- This filter rejects a narrow band of frequencies and passes all others.
- The filter can be applied both in connection with transmitters and receivers to attenuate interfering signals which cause cross modulation effects.
- The filter can be employed as a single component or it can act as an integrated part of a complete multi-coupling system.
- The BRF 70/6-150 can be tuned within the complete 380 – 470 MHz band. Careful design and choice of materials ensure reliable operation over a wide temperature range.
- The housing is made of extruded aluminium, the chassis of brass, and teflon insulation has been applied in the coaxial cables and in the connectors.
- The filter is coated with black vinyl to prevent corrosion.
Specification
| Electrical | |
| Model | BRF 70/6-150 |
|---|---|
| Filter Type | Band-reject (notch) filter |
| Frequency | 380 – 470 MHz |
| Max. Input Power | 50 W @ IL < 1.0 dB 150 W @ IL < 0.5 dB |
| Pass Band Insertion Loss | < 0.5 dB |
| Impedance | 50 Ω |
| Reject Attenuation | > 25 dB @ 5 MHz BW (See curve) |
| VSWR | 20 – 380 MHz : < 1.5 :1 420 – 530 MHz : < 2.0:1 |
| Environmental | |
| Operating temperature range | -30 °C to +60 °C |
|---|---|
| Mechanical | |
| Connection(s) | N(f) (BNC(f), TNC(f), UHF(f) or SMA(f) on request) |
|---|---|
| Historic Brand | Amphenol Procom |
| Dimensions | 260 x 250 x 50 mm / 10.24 x 9.84 x 1.97 in. |
| Weight | Approx. 2.5 kg / 5.51 lb. |
Ordering Codes
| Model | Product No. |
|---|---|
| Band-reject (notch) filter for the 450 MHz Band | 200001244 |
Additional Information
Mounting Details
All dimensions are given in mm.
Please Note
The notch filter resonators can also be separately tuned to three different frequencies in a “multiple notch” configuration, but the attenuation on each frequency is then only approximately one third of the normal attenuation when all notches work together.
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