BPBR 4/2 / Brand New Boxed
Pass / reject Filter for the 80 MHz Band
The BPBR 4/2 and the BRBP 4/2 are 2-cavity pass-reject filters, which pass one frequency or frequency band and reject another in immediate vicinity of the pass frequency.
The BPBR 4/2 has the reject range on the high side of the pass frequency and the BRBP 4/2 has the reject range situated on the low side of the pass frequency.
These filter types can be used to protect a receiver against interference from a nearby transmitter. The filters are tuned to reject the interfering signal. BPBR-type filters are applied when the spacing between the utility signal and the interfering signal is so small, that the slope steepness of normal band-pass filters or notch filters are not sufficient enough to provide adequate rejection.