Av-Comm F4002 L Band LPF Filter 950-1450MHz - STEP Electronics
LPF-1 Low Pass Filter 1,8-30 MHz, 1500W
Low Pass Filter Board
CATV Low Pass Filter
Amazon.com: Shipenophy LPF Filter Module, Stable Structure Low Pass Filter Module Professional Simple Install for Power Distribution Control Equipment : Electronics
Low Pass Filter Calculator - ElectronicBase
QRPLabs Low-Pass and Band-Pass filters assembly and characterization – IZ7BOJ Hamradio Website