Kamar yadda kowa ya sani, walkie-talkie shine mabuɗin na'urar a cikin tsarin sadarwa mara waya.Walkie-talkie yana aiki azaman hanyar haɗin watsa murya a cikin tsarin sadarwa mara waya.Za a iya raba waƙar-talkie na dijital zuwa tashoshi na rabe-raben mita da yawa (FDMA) da rabon lokaci mai yawa damar shiga (TDMA).Don haka a nan za mu fara da ribobi da fursunoni na samfuran biyu da bambance-bambancen da ke tsakanin dijital da na'urar magana ta analog:
1.Two-tashar sarrafa halaye na dijital walkie-talkie
A.TDMA(Time Division Multiple Access): An karɓi yanayin TDMA mai ramuka dual-slot don raba tashar 12.5KHz zuwa ramummuka biyu, kuma kowane lokaci ramin yana iya watsa murya ko bayanai.
Amfani:
1. Sau biyu ƙarfin tashar tashar tsarin analog ta hanyar mai maimaitawa
2. Mai maimaita ɗaya yana ɗaukar aikin masu maimaitawa guda biyu kuma yana rage saka hannun jari na kayan aikin hardware.
3. Yin amfani da fasahar TDMA yana ba da damar batir ɗin walkie-talkie suyi aiki har zuwa 40% tsawon tsayi ba tare da ci gaba da watsawa ba.
Rashin hasara:
1. Ba za a iya watsa murya da bayanai a lokaci guda ba.
2. Lokacin da mai maimaitawa a cikin tsarin ya kasa, tsarin FDMA zai rasa tashar guda ɗaya kawai, yayin da tsarin TDMA zai rasa tashoshi biyu.Don haka, gazawar iya raunana ya fi FDMA muni.
FDMAAn karɓi yanayin FDMA, kuma bandwidth na tashar shine 6.25KHz, wanda ke haɓaka yawan amfani da mitar sosai.
Amfani:
1. Yin amfani da tashar tashar band mai kunkuntar 6.25KHz, ƙimar amfani da bakan za a iya ninka sau biyu idan aka kwatanta da tsarin analog na gargajiya na 12.5KHz ba tare da mai maimaitawa ba.
2. A cikin tashar 6.25KHz, ana iya watsa bayanan murya da bayanan GPS a lokaci guda.
3.Saboda ƙunƙuntaccen madaidaicin siffar tacewa mai karɓa, karɓar hankalin id ɗin sadarwa ya inganta sosai a tashar 6.25KHz.Kuma tasirin gyaran kurakurai, nisan sadarwar yana da kusan 25% girma fiye da rediyon analog FM na gargajiya.Don haka, don sadarwar kai tsaye tsakanin manyan wurare da kayan aikin rediyo, hanyar FDMA tana da ƙarin fa'idodi.
Bambanci tsakanin walƙiya-talkie na dijital da analog walkie-talkie
1.Tsarin siginar murya
Walkie-talkie na dijital: yanayin sadarwa na tushen bayanai wanda aka inganta ta hanyar na'ura mai sarrafa siginar dijital tare da ƙayyadaddun rufaffiyar dijital da ƙirar tushe.
Analog Walkie-talkie: yanayin sadarwa wanda ke daidaita murya, sigina, da ci gaba da kaɗawa zuwa mitar mai ɗauka na walkie-talkie kuma ana inganta ta ta hanyar ƙarawa.
2.Amfani da albarkatun bakan
Walkie-talkie na dijital: kama da fasahar dijital ta wayar hannu, dijital Walkie-talkie na iya ɗaukar ƙarin masu amfani akan tashar da aka bayar, haɓaka amfani da bakan, da yin amfani da albarkatun bakan.
Analog Walkie-talkie: akwai matsaloli kamar ƙarancin amfani da albarkatun mitar, rashin sirrin kira mara kyau, da nau'in kasuwanci guda ɗaya, waɗanda ba za su iya biyan bukatun sadarwar abokan cinikin masana'antu ba.
3. Kyakkyawan kira
Saboda fasahar sadarwar dijital tana da ikon gyara kuskure a cikin tsarin, kuma idan aka kwatanta da na'urar tafi da gidanka ta analog, za ta iya samun ingantacciyar murya da ingancin sauti a cikin kewayon yanayin sigina da kuma karɓar ƙaramar ƙarar sauti fiye da na analog walkie-talkie.Bugu da ƙari, tsarin dijital yana da kyakkyawar murkushe hayaniyar muhalli kuma yana iya sauraron bayyanannun muryoyin a cikin mahalli masu tashin hankali.
Lokacin aikawa: Agusta-06-2021