Ọdịiche dị n'etiti walkie-talkie dijitalụ na analog walkie-talkie

Dị ka anyị niile maara, Walkie-talkie bụ ngwaọrụ bụ isi na sistemụ intercom ikuku.Walkie-talkie na-arụ ọrụ dị ka njikọ nke nnyefe olu na sistemụ nkwurịta okwu ikuku.Enwere ike kewaa igwe okwu dijitalụ dijitalụ ka ọwa nkewa ọtụtụ ohere (FDMA) yana oge nkewa otutu ohere (TDMA).Yabụ ebe a, anyị na-amalite site na uru na ọghọm dị na ụdị abụọ a yana ọdịiche dị n'etiti igwe okwu dijitalụ na analog:

1.Two-channel nhazi ụdịdị nke digital walkie-talkie

A.TDMA(Oge Nkewa Ọtụtụ ohere): A na-anabata ọnọdụ TDMA nke nwere oghere abụọ iji kewaa ọwa 12.5KHz n'ime oghere abụọ, na oghere oge ọ bụla nwere ike ibunye olu ma ọ bụ data.

Uru:

1. Ugboro abụọ ikike ọwa nke usoro analọg site na onye na-emegharị ugboro ugboro

2. Otu onye na-emegharị ihe na-arụ ọrụ nke ndị na-emegharị ugboro abụọ ma na-ebelata ntinye ego nke akụrụngwa ngwaike.

3. Iji teknụzụ TDMA na-enye ohere batrị walkie-talkie ka ọ rụọ ọrụ ruo 40% ogologo oge na-enweghị nnyefe na-aga n'ihu.

Ihe ọghọm:

1. Enweghị ike ibunye olu na data n'otu oge oghere.

2. Mgbe repeater na usoro ada ada, FDMA usoro ga-atụfu naanị otu ọwa, mgbe TDMA usoro ga-atụfu abụọ ọwa.Ya mere, ike na-ebelata ọdịda dị njọ karịa FDMA.

B.FDMA(Nnweta ọtụtụ ugboro ugboro):A nabatara ọnọdụ FDMA, yana bandwidth ọwa bụ 6.25KHz, nke na-eme ka ojiji ugboro ugboro dịkwuo mma.

Uru:

1. Iji a 6.25KHz ultra-narrow band channel, ụdịdị itinye n'ọrụ ọnụego nwere ike okpukpu abụọ ma e jiri ya tụnyere omenala analog 12.5KHz usoro na-enweghị a repeater.

2. Na ọwa 6.25KHz, data olu na data GPS nwere ike ibunye n'otu oge.

3. N'ihi njirimara narrowband dị nkọ nke nzacha nnabata, nnabata nnabata nke id nzikọrịta ozi ka mma na ọwa 6.25KHz.Na mmetụta nke mmezi njehie, anya nkwurịta okwu dị ihe dịka 25% karịa redio FM analog ọdịnala.Ya mere, maka nkwurịta okwu kpọmkwem n'etiti nnukwu mpaghara na akụrụngwa redio, usoro FDMA nwere uru karịa.

Ọdịiche dị n'etiti igwe okwu dijitalụ na ihe analọgụ walkie-talkie

1.Nhazi nke mgbaàmà olu

Digital Walkie-talkie: ụdị nzikọrịta ozi dabere na data nke ejiri nrụnye mgbama dijitalụ nwere ihe ngbanwe dijitalụ kpọmkwem yana modulation baseband.

Analog walkie-talkie: ụdị nzikọrịta ozi nke na-agbanwe olu, nrịbama na na-aga n'ihu na-efegharị ugboro ugboro nke Walkie-talkie ma na-akwalite ya site na nkwalite.

2.Utilisation nke ụdịdị dị iche iche akụrụngwa

Digital Walkie-talkie: dị ka teknụzụ dijitalụ cellular, dijitalụ walkie-talkie nwere ike ibunye ọtụtụ ndị ọrụ na ọwa enyere, melite ojiji ụdịdị dị iche iche, ma jiri akụrụngwa ụdịdị dị iche iche nke ọma.

Analog walkie-talkie: enwere nsogbu dị ka obere ojiji nke akụrụngwa ugboro ugboro, nzuzo oku na-adịghị mma, na otu ụdị azụmahịa, nke enweghịzi ike gboo mkpa nkwukọrịta nke ndị ahịa ụlọ ọrụ.

3. Ogo oku

N'ihi na teknụzụ nzikọrịta ozi dijitalụ nwere ikike mgbazi njehie n'ime sistemụ, ma atụnyere analog walkie-talkie, ọ nwere ike nweta ogo olu na ọdịyo dị mma n'ọtụtụ ebe mgbama ma nweta obere mkpọtụ ụda karịa nke analog walkie-talkie.Tụkwasị na nke ahụ, usoro dijitalụ nwere nkwụsị nke ọma nke mkpọtụ gburugburu ebe obibi ma nwee ike ige ntị n'olu doro anya na gburugburu ọgba aghara.