Uhlalutyo lobuGcisa kunye nokuSetyenziswa kweendlela ezimbini-zeNdlela zoNxibelelwano lweRadio

I-Two-irediyo yendlela (ekwaziwa ngokuba yi-walkie-unxibelelwano lwe-talkie) yindawo-yokukhomba okanye yalathe-e{5}}kwi-multipoint instant wireless communication technology esetyenziswa ngokubanzi kukhuseleko loluntu, ezothutho, kwimizi-mveliso, kunye nemisebenzi yangaphandle. Olona ncedo lwayo kukuba yenza{7}}unxibelelwano lwelizwi lokwenyani ngaphandle kokuxhomekeka kwiziseko ezingundoqo zenethiwekhi yeselula. Ibonakala ngokulula, ukuchasana nokuphazamiseka okunamandla, kunye neendleko eziphantsi.

Iindlela-ezimbini zonxibelelwano lwerediyo zisekwe ikakhulu kwisiqingatha{{1}ekubini okanye egcweleyo{2}}yeendlela ezimbini. Kwisiqingatha -imowudi ephindiweyo, umsebenzisi ucofa iqhosha elithi "Cofa{5}}uku{6}}Thetha" (PTT) ukuthumela umqondiso. Emva kokuyikhulula, isignali iyatshintsha ukuze ifumane imowudi, iqinisekisa ukuba iqela elinye kuphela elinokuhambisa kwisitishi esinye ngexesha. -imowudi ephindwe kabini ivumela amaqela omabini ukuba athumele kwaye afumane imiyalezo yelizwi ngaxeshanye, efana nefowuni ephathwayo, kodwa ifuna isibonelelo esibanzi kwaye iqhele ukufunyanwa kwiinkqubo zedijithali trunking.

Ngokobuchwephesha, iindlela ezimbini-ezinonomathotholo zixhomekeke kwiVHF (Kakhulu iFrequency, 30-300 MHz) kunye ne-UHF (Ultra High Frequency, 300-3000 MHz) iibhendi zamaza. I-VHF inikezela ngokungena olomeleleyo kwaye ilungele iindawo ezivulekileyo, ngelixa i-UHF ibonelela ngochaso oluphezulu lwe-diffraction kwaye ilungele indawo ezixineneyo zasedolophini. Itekhnoloji yonxibelelwano lwedijithali (efana ne-DMR kunye ne-P25) iye yaphucula ngakumbi ukusebenza kakuhle kwe-spectrum, ukuhanjiswa kwe-encrypted exhaswayo kunye neenkonzo zedatha, kunye nokhuseleko lonxibelelwano oluphuculweyo kunye nokusebenza.

Kwizinto ezisebenzayo, ukusasazwa{0}}kweendlela ezimbini zerediyo kufuna ukuqwalaselwa kwesicwangciso setshaneli, ukulawulwa kwamandla, kunye nokukhetha i-eriyali. Umzekelo, izixhobo zombane eziphezulu-zifanelekile kunxibelelwano olude-nonxibelelwano olude, ngelixa izixhobo zamandla ezisezantsi{4}zifaneleke ngakumbi imigama emifutshane kunye neemeko eziphezulu{5}}zoxinzelelo. Ngaphaya koko, abaphindayo banokwandisa ukhuselo ngokufumana kunye nokudlulisa imiqondiso, ukwenza unxibelelwano{7}}lommandla.

Ngamafutshane, iirediyo{0}ezimbini zihlala zingafumaneki kwimpendulo kaxakeka kunye nentsebenziswano yeqela ngenxa yokuthembeka kunye nokuguquguquka kwazo. Ngokudityaniswa kobuchwepheshe bedijithali, umgangatho wabo wonxibelelwano kunye nokusebenza kwabo kuya kuphuculwa ngakumbi ukuhlangabezana neemfuno ezahlukeneyo zonxibelelwano lwale mihla.