Dee ihe na-aga n'ihu na paragraf a - Site na ngwụcha afọ 1930, na egwu agha na-aga n'ihu na Japan na Pacific, a na-ahụta telecommunications ọzọ dị ka ihe dị mkpa nke nchebe mba. Ọbụna tupu Australia kwupụta agha na Japan na 9 Disemba 1941, (mgbe ndị Japan wakporo Hawaii, Hong Kong na Malaya n'otu oge
), enwere mmasị dị mkpa n'ịkwalite akụrụngwa nchekwa na Cape York Peninsula. Ihe abụọ a na-ebute ụzọ bụ ọdụ ụgbọelu ndị nwere ike ịrụ ọrụ na nkwukọrịta zuru oke. Ka ọ na-erule ọnwa Julaị afọ 1941, a rụchara ọdụ ụgbọelu ọhụrụ dị n'ebe ugwu nke Coen, na ọdụ ụgbọ elu ọhụrụ na Iron Range (n'akụkụ Osimiri Lockhart), mana n'oge a, Coen Telegraph Station nwere naanị ụlọ ọrụ morse na akara akara pyramid 6-line (naanị ekwentị mpaghara).