Yuav nrhiav tau cov frequency thiab bandwidth ntawm cov TV channel hauv lub tv txheej-saum toj kawg nkaus?

Ib tug neeg tau hais rau peb muaj ib co tu channel rau peb tv thawv nyob rau hauv lawv cheeb tsam. Daws tau qhov teeb meem no, Li ntawd, peb yuav tsum paub cov frequency thiab bandwidth ntawm cov channel tu channel kom paub tseeb los ntawm tus engineer. Lawv yuav ua li cas thiaj tau lawv thiaj tau txais kev? Ntawm ib tug ua hauj lwm zoo tv thawv, Xovxwm info khawm rau tej thaj chaw deb tswj, Ces qhov screen yuav qhia cov channel lus rau cov ntxaij vab tshaus, Koj yuav nrhiav tau cov frequency thiab bandwidth. Muab ib daim duab los yog sau nws thiab xa peb, Peb yuav daws tau qhov teeb meem npeeg channel.