Ndezvipi zviripo zvakawanda, zviteshi kana kuti zvikumbiro zvemarezinesi enhepfenyuro yeterevhizheni? Tichifunga nezvemubvunzo wapfuura, nyora mashoko akapoteredza mhinduro yacho. Inogona kuva mitsara 1 - 20. Mashoko akapoteredza:
Nepo nhepfenyuro yaro yeredhiyo yakanga ichivakwazve, ABC yakawana zvakaoma kudzivisa kunonoka pamushumo mutsva weterevhizheni. Kuti ave nechokwadi chenzvimbo, muna 1947, ABC yakatumira zvikumbiro zvishanu zvemarezinesi enhepfenyuro yeterevhizheni, imwe pamusika mumwe nomumwe umo yaive nayo uye yaishandisa nhepfenyuro yeredhiyo (New York City, Los Angeles, Chicago, San Francisco neDetroit). Zvose izvi zvikumbiro zvakakumbira kuti zviteshi zviparidzire paVHF channel 7, sezvo Frank Marx, ipapo mutevedzeri wemutungamiri weABC weunyanzvi, akafunga kuti yakaderera-band VHF frequencies (inoenderana nemigwagwa 2 kusvika ku6) yaizotorwa kubva pakushambadzira kushandiswa uye kugoverwazve kuU.S. Army.