Description
All of the filters are FM band tunable and convection cooled. The fully adjustable input and output coupling provide superior tuning and performance over the entire FM band. The bandpass filters use an low-loss aluminium and cooper/ silver plated construction for stable high power performance.
Product Features:
- High power filter
- Temperature stabilized
- Retunable
- 10-year comprehensive warranty
High power temperature stabilized FM filters with 3 Pole, capable to handling power up to 59 kW. Used as a reflective band pass filter or as part of a channel combiner, they provide channel isolation for channels as close as 800 kHz. FM band tunable and simple tuning along with a tuner design that does not use spring fingers ensures a solid reliable product for years of broadcast service.
All average power values and technical data refer to an ambient temperature of + 20-25 °C with normal air flow. The product will have a maximum surface temperature of + 70 °C. Maximum power capacity may be lower depending on channel allocation.
Data in tables is typical. The filter can be tuned for other specifications or bandwidths, please contact us for a specification designed for your requirements.
Specifications:
| ARTICLE | BPF23C53B-0044 | BPF23C53B-0046 | BPF23C53A-0044 | BPF23C53A-0046 |
| FREQUENCY | 87 – 108 MHz | 87 – 108 MHz | 87 – 108 MHz | 87 – 108 MHz |
| MAX POWER INPUT | 59kW | 59kW | 50kW | 50kW |
| IMPEDANCE | 50 Ohm | 50 Ohm | 50 Ohm | 50 Ohm |
| VSWR | <1.05 (>32 dB) | <1.05 (>32 dB) | <1.05 (>32 dB) | <1.05 (>32 dB) |
| INSERTION LOSS | ||||
| Centre frequency | 0.1 dB | 0.1 dB | 0.1 dB | 0.1 dB |
| BANDWIDTH | ||||
| ± 200 kHz | 0.1 dB | 0.1 dB | 0.1 dB | 0.1 dB |
| STANDARD CONNECTION | 4 1/2” unflange | 1 x 4 1/2” unflange and 1 x 6 1/8” unflange | 4 1/2” unflange | 1 x 4 1/2” unflange and 1 x 6 1/8” unflange |
| DIMENSIONS AND WEIGHT | ||||
| DIMENSIONS (L x W x H) |
919 x 622 x 1632 mm | 919 x 622 x 1632 mm | 919 x 622 x 1632 mm | 919 x 622 x 1632 mm |
| WEIGHT | 250kg | 250kg | 250kg | 250kg |
| Aluminum resonators | Aluminum resonators |
View the full specifications here.





