The following table shows the shape factor of the SFF low-band filters:

Specification BPF1 BPF2
Center frequency 300 MHz 300 MHz
Bandwidth 5 MHz 20 MHz
Insertion loss Maximum of 10 dB Maximum of 10 dB
Pass band Less than 3 dB (297.5 MHz
and 302.5 MHz)
Less than 3 dB (290 MHz
and 310 MHz)
Ripple Maximum of ±0.5 dB Maximum of ±0.5 dB
Stop Band More than 35 dB (290 MHz
and 310 MHz)
More than 50 dB (270 MHz
and 330 MHz)
More than 20 dB (280 MHz
and 320 MHz)
More than 50 dB (270 MHz
and 330 MHz)
Input/output impedance 50 Ω 50 Ω