WR28-WR22 prelazni talasovodi 30,0-40,0 GHz 25,4 mm WR4-WR5 prelazni talasovodi 140-260 GHz 25,4 mm WR28-WR22 prelazni talasovodi 140-260 GHz 25,4 mm WR112-WR90 prelazni talasovodi 8,2-10GHz 25,4mm WRD750 upredeni talasovod 8-18GHz