Cavity filters for Earth Moon Earth communications
NX7U...Satellite and VHF...70cm cavity filter
What is a Cavity Filter?
Single‐/dual‐band triple‐mode cavity filters with wide tunable frequency range - Wong - 2019 - Microwave and Optical Technology Letters - Wiley Online Library
Cavity Notch filter in frequency range VHF - RL - RidiculousLab
Homebrew cavity resonator/duplexer for 2m repeater
Cavity Notch filter in frequency range VHF - RL - RidiculousLab
6454SBC EMR CORPORATION VHF Band-Pass cavity filter for 144-190 MHz 150 Watt N Female.