<prompt> NTSC e kgethile methaladi ye 525 bjalo ka tekatekano magareng ga RCAs 441-scan line standard yeo e bego e šetše e dirišwa ke RCAs NBC TV network le Philcos le DuMonts desire to increase the number of scan lines to select between 605 and 800. Tekatekano e be e le 30 ya foreime diswantšho ka motsotswana, yeo e bego e na le mela ye mebedi ya tšhemong e ntsho le ye tšhweu yeo e agilwego godimo ga tšhišinyo ya 1936 yeo e dirilwego ke Radio Manufacturers Association RMA. NTSC e kgethile methaladi ye 525 bjalo ka tekatekano magareng ga RCAs 441-scan line standard yeo e bego e šetše e dirišwa ke RCAs NBC TV network le Philcos le DuMonts desire to increase the number of scan lines to select between 605 and 800. Tekatekano e be e le 30 ya foreime diswantšho ka motsotswana, yeo e nago le mela ye mebedi ya tšhemong e ntsho yeo e bego  <response>: 525 tše pedi tše pedi 