Ezimbini -Uluhlu lweRadio kunye nezinto ezichaphazelayo

Iirediyo-ezimbini, ezaziwa ngokuba zii-walkie{1}}talkies, zizixhobo ezenza unxibelelwano olukhawulezileyo ngaphandle kokuxhomekeka kuthungelwano lweselula. Zisetyenziswa ngokubanzi kukhuseleko loluntu, ishishini, kunye nemisebenzi yangaphandle. Uluhlu lwabo luchaphazeleka kwizinto ezahlukeneyo, kwaye ukuqonda ezi zinto kunokukunceda ukhethe kwaye uzisebenzise ngokufanelekileyo.

Uluhlu lwethiyori yeendlela ezimbini-zonomathotholo ziqhele ukusuka kwiikhilomitha ezimbalwa ukuya kumashumi eekhilomitha, kodwa ngokwenyani, zihlala zimfutshane kakhulu. Phantsi kweemeko ezifanelekileyo, ezinje ngamathafa avulekileyo, angavalwanga okanye kwindawo ephakamileyo, izixhobo zobuchwephesha ezixhotyiswe{2}}noomatshini bokuhambisa amandla aphezulu kunye nee-eriyali ezisebenzayo zinokufikelela kuluhlu lweekhilomitha ezingamashumi. Nangona kunjalo, kwiindawo ezintsonkothileyo ezifana neendawo ezixineneyo{4}eziphezulu, iindawo zeentaba, okanye amahlathi, uthintelo lwemiqondiso kunye nophazamiseko lweendlela ezininzi kunokunciphisa uluhlu olusebenzayo ukuya kumakhulu eemitha okanye nangaphantsi.

Amandla othutho yinto ephambili ekumiseleni uluhlu. Ngokubanzi, amandla aphezulu athetha umgama omkhulu wokuhanjiswa komqondiso. Ii-walkie zasekuhlaleni{2}}ziqhele ukusebenzisa i-0.5 ukuya kwi-2 watts yamandla, ngelixa izixhobo zobuchwephesha zinokufikelela kwi-5 watts nangaphezulu. Uhlobo lwe-antenna kunye nobude nazo zibalulekile. Okuphezulu{8}}i-eriyali zokufumana umkhomba-ndlela ziphucula kakhulu-uluhlu lwesakhono sonxibelelwano, kwaye nokubekwa kwe-eriyali ephezulu kwandisa ukugubungela umqondiso.

Imiba yokusingqongileyo ayinakungahoywa ekuchaphazeleni uluhlu lweerediyo-ezimbini. Ukufuma, imvula, kunye nekhephu zinokufunxa amanye amaza erediyo, ngelixa uphazamiseko lwe-electromagnetic (umzekelo, ukusuka kwi{4}}iintambo zamandla ombane aphezulu kunye nezixhobo zombane) zinokubangela ukuncipha komqondiso. Ngaphezu koko, ukhetho lwefrikhwensi lubalulekile. I-VHF (i-frequency ephezulu kakhulu, 30-300MHz) inobude obude kunye nokungena okubuthathaka kodwa i-diffraction eyomeleleyo, iyenza ifaneleke kumhlaba ovulekileyo. I-UHF (i-ultra-high frequency, 300-3000MHz) inobude obufutshane obufutshane kunye nokungena okunamandla kodwa ivalwa ngokulula yimiqobo, iyenza ifaneleke ngakumbi indawo ezidolophini.

Ngamafutshane, uluhlu lonxibelelwano lwerediyo{0}eendlela ezimbini aluloxabiso limiselweyo; imiselwa yindibaniselwano yeeparamitha zesixhobo, iimeko zokusingqongileyo, kunye nokukhethwa kwamaza. Abasebenzisi kufuneka bahlengahlengise ulungelelwaniso lwesixhobo sabo ngokweemfuno zabo zokwenyani ukuqinisekisa unxibelelwano olululo.