BPF900 900 MHz Ultra High Q 4-Pole Indoor Bandpass Filter, Full BandProduct Datasheet The HyperLink 900 MHz 4 Pole Ultra High Q full band filter is designed for full band applications. By reducing interference outside the 915 MHz band such as from cellular and paging signals, improved performance in noisy environments can be achieved. The BPF900 series filters are ideal for use with 902 928 MHz ISM band applications as well as 900 MHz RFID applications. This filter features a rugged aluminum construction. The BPF900