kebal TV

gharon mein kebal TV ka sanket (signal) le jaane ke liye praay: samaaksheeya kebal (Coaxial cable) ka upayog kiya jaata hai

paramparaagat TV prasaaran, hava mein vidyamaan TV signalon ko TV entena ki sahaayata se seedhe grahan karke kiya jaata hai. iske vipreet kebal TV, TV ke kaaryakram dikhaane ka aisa tantr hai jismein sabse pehle dooradarshan ke signal ko kisi kendreeya sthaan par (jise head-end kehte hain) grahan karke use samaaksheeya kebal ya prakaasheeya faaibar (faaibar aapatiks) ki sahaayata se graahakon ke TV se jod diya jaata hai. kebal mein signal daalne ke pehle use hedaend par nimnalikhit prakriyaaon se gujaranna padta hai:

  • sanket ko badi-badi dish-entena ki sahaayata se grahan kiya jaata hai,
  • parivrdhit kiya jaata hai;
  • di-code kiya jaata hai;
  • mishrit kiya jaata hai.

kebal TV ko saamudaayik TV (kamyuniti TV ya CATV) naam se bhi jaana jaata hai kyonki ismein har TV svatantr roop se sanket grahan naheen karta balki yeh ek saamudaayik seva ke roop mein kisi gaaainv, kasbe ya ek bade shahar ke bade bhaag ko seva deti hai.

kebal TV ke saath ef M radio, uchch-gati Internet, doorabhaash evam anya gair-dooradarshaneeya sevaayein bhi pradaan ki ja sakti hain. kebal TV ka praadurbhaav America mein san 1948 mein hua jab vahaan oonchi pahaadiyon par TV signal na milne ke kaaran vahaan ke log ek bada dish entena lagaakar TV ka anand uthaane lage the.

kebal TV ka network

neeche kebal TV ke prasaaran evam vitran ka ek vihangam chitr diya gaya hai:

केबल टीवी का नेटवर्क

Bhaarat sarkaar ne ab hedaend in di skaai (hits) takaneek[1] ke maadhyam se kebal TV prasaaran ki anumati de di hai.

  1. http://www.sharemanthan.in/index.php/component/content/article/60-stock-market/4392-wwil-touches-upper-circuit

baahari kadiyaaain

sandarbh