ISC-1000E Powerful Common Mode Filter

Used outdoors. Rust has appeared on the nut parts.
This is a compact, lightweight, and high-performance common mode filter using 7 elements, each composed of an RG316 Teflon coaxial cable and a hollow cylindrical ferrite core with a diameter of 17.5mm. It has a maximum input resistance of 1KW PEP. The weight of each ferrite core is 22g, for a total of 154g for all 7 cores. The elements are housed in a waterproof case, allowing for outdoor installation, such as directly below the antenna balun. The cores are fixed internally with adhesive, so they do not move around inside. The compatible frequency range is from 1.9MHz to 50MHz. It provides over -30dB of common mode suppression in the 1.9MHz to 3.5MHz band, over -40dB in the 7MHz to 14MHz band, and over -50dB in the 18MHz to 50MHz band.