1KW 11 RF choke line isolator unun

11 current balun Line isolator common mode RF choke - 1KW versions - Select the frequency band of YOUR antenna and get unbeatable common mode rejection  A Common Mode choke 11 balun aims at preventing  your coaxial cable from sending back some RF (causing RFIs) your coaxial cable from being part of the TX antenna (coaxial braid must NOT be radial of your vertical antenna) your coaxial cable from catching local noise that could ruin your reception. It also helps your symmetric antenna (dipoles, yagis, ...) to be really symmetric, by avoiding distortion of its radiating diagram A good choke 11 balun must have the following mandatory performances over its entire bandwidth 30dB rejection Impedance 3KOhms SWR 1,11 and insertion losses 0,1dB Rs Xs (your device MUST b