Odg: YU1AW info

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TnX Adam, Dragan i ekipa, konacno nesto interesantno na forumu

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U principu radi se o Common Mode Current na koaksialno kablu. Cirkulirajuce struje na napojnom kablu unose faznu razliku struje i napona na zracecem elementu, sto za poljedicu ima manju ili vecu promjenu diagrama zracenja, ovisno o tipu antena.
Common Mode povratne struje teku preko opleta koaksialnog kabla.
Sa Bazzuka L/4 balun ili feritnim jezgrima na opletu koaksa, ove struje se mogu ponistiti
bez mnogo drame.

Ukratko:
In summary, minimizing common mode current improves station performance by:
reducing noise pickup from conductors near the feed line.
reducing induction into other conductors and eventually appliance of transmit energy, so improving Electro Magnetic Compatibility; and
preserving the radiation pattern of the intended radiator.