SD, S coaxial cable, D yog huab cua. No cable no mas koj yuav mloog xov tooj cua thiab TV tus kis cua thiab radar tshuab, yog cov yam ntxwv tseem ceeb: cov fais fab kis no, uas tsis muaj hluav taws. Tus neeg xyuas pib puab yog ntau dimensioned nrog plated tooj txhuas, hlau tooj liab, dag, dag dag, hnab riam PE yog polyethylene, feem ntau siv los ntawm 1GHz.
SDY: S coaxial cable, D yog cov cua cable, Y polyethylene, collectively hu li polyethylene xov insulated corrugated tooj liab txheej neeg xyuas pib coaxial cable, koob mas siv rau nruab nrab yoj, FM, TV transmitter, satellite hauv chaw nres tsheb, radar los yog lwm yam-loj ib yam li lub qes-attenuation, high-power co tes kis kab. Nta: faiv fab kis tau tus mob loj, uas tsis muaj hluav taws, tus neeg xyuas pib, tooj, dag, dag dag, rwb thaiv tsev: kauv PE, polyethylene. Feem ntau siv 3 G hauv qab
