247.5 MHz Bandpass Filter

600 MHz bandpass filter

281.25 MHz Bandpass Filter

Lowpass Filter

300 MHz Bandpass Filter

25 MHz Highpass Filter

30 MHz bandpass filter

KR Electronics part number 3371-SMA is a 30 MHz Bandpass Filter

162 KHz Notch Filter

45 KHz lowpass filter

Notch filter

252 KHz notch filter

162 KHz notch filter

100 KHz highpass filter