Ki te mea kua titiro matatau koe ki tō waea, me te whakaaro he aha i kotahi te pae i te meneti kotahi, ā, e toru i te meneti e whai ake nei—he aha rānei i mutu ai ō waea ahakoa e kī ana he ratonga tāu—kua rongo pea koe i te kupu"dBm" i tētahi wā. E 14 tau ahau e whakatika ana i ngā raruraru tohu waea pūkoro mō ngā kāinga, ngā tari, tae atu ki ngā wāhi tuawhenua tūroa, ā,Ka taea e au te kī atu ki a koe: ko te dBm te waehere ngaro hei mārama ki te kaha (te ngoikore rānei) o tō tohu pūtau. Ā, ko te mea pai rawa atu?IEhara i te mea uaua penei i te ahua—me whakamārama atu ahau me te mea kei te kōrero tāua i runga i te kapu kawhe.
Tuatahi, kia mārama tātou ki tētahi mea: ko te tikanga o te dBm he "decibels e pā ana ki te kotahi milliwatt." E mōhio ana ahau, he rite tonu tēnā ki te kupu hangarau, engari ko te mea anake hei maumahara māu ko tēnei:Ko te dBm te waeine e ine ana i te kaha o te hononga o tō waea ki tētahi pourewa pūkoro. Kāore i rite ki te nuinga o ngā tau kua taunga koe ki te whakamahi—he pai ake te nui—ka mahi whakamuri te dBm. Ka tata te tau ki te 0, ka kaha ake tō tohu. Ka nui ake te kino, ka ngoikore ake. Koinei te hapa tuatahi a te nuinga o te tangata: ka kite rātou i tētahi tau pēnei i te -80, ā, ka whakaaro he kino ake i te -60, engari ko te ritenga kē.
Kia mārama tātou ki tēnei me ngā tau tūturu—arā, ko ngā tau ka kitea e koe i runga i tō waea. Mena kei te tata ki te -50 ki te -70 tō dBm, kei te wāhi tika koe. Koia ngā pae katoa, ngā waea mārama, me ngā raraunga tere—kāore he parenga, kāore he waea i mutu, he hononga maeneene noa iho. Koinei te mea ka whiwhi koe mēnā kei te tū koe i te taha tonu o tētahi pourewa waea pūkoro, i tētahi wāhi tuwhera rānei, kāore he arai.
Inaianei, ki te mea kei waenganui i te -70 me te -90 tō dBm, he pai tonu tēnā—e 2-3 ngā pae, ā, ka pai te mahi a te nuinga o ngā waeatanga me ngā taupānga. Tērā pea ka kite koe i te puhoi haere o ngā raraunga i ētahi wā, inā koa i ngā wāhi pukumahi, engari kāore he take e manukanuka ai. Koinei te kaha o te tohu i te nuinga o ngā kāinga me ngā tari kāore i te tawhiti rawa atu i te pourewa.
Ka tīmata te raruraru ina eke koe ki te -90 ki te -110 dBm. Kotahi te pae (kāore rānei he ratonga i ētahi wā), ā, ka tīmata koe ki te raru: ka mutu ngā waea i waenganui o te kōrero, ka roa te tuku karere kuputuhi, ā, kāore e taea te rere oro. He mea noa tēnei i ngā rūma o raro, i ngā whare matotoru te pakitara, i ngā wāhi rānei e tawhiti ana i ngā pourewa waea pūkoro—pērā i ngā kāinga o te taiwhenua, i roto rawa rānei i ngā tari nui.
Ā, ki te mea ko tō dBm he -110, he iti iho rānei? He rohe mate tēnā. Tērā pea ka uaua te hono atu o tō waea, ā, ahakoa ka pērā, he ngoikore rawa te tohu, kāore he painga. Ka kite tonu ahau i tēnei i ngā wā katoa i roto i ngā whare waka o raro whenua, i ngā kauhanga, i ngā whare rānei e karapotia ana e ngā rākau teitei, e ngā maunga rānei—ngā wāhi e kore e taea e te tohu te uru ngāwari.
Tērā pea kei te whakaaro koe: me pēhea taku tirotiro i taku dBm? He māmā noa iho, ā, kāore koe e hiahia ki ētahi taputapu papai. I runga i te iPhone, ka taea e koe te whakamahi i te Aratau Whakamātautau Mara (Waea noa ki *3001#12345#* ka pato i te “LTE” kātahi ka “Serving Cell Measures”) kia kite i tō dBm tika. I runga i te Android, he kōwhiringa "Tohu Kaha" kei te taupānga Tautuhinga mō te nuinga o ngā waea, ka taea rānei e koeTikiake i tētahi taupānga kore utu pērā i a CellularZ kia mārama ai te pānui.Kia mōhio koe ki tō dBm, ka mōhio pū koe ki te kaha o tō tohu—me te mea me mahi koe i tetahi mea hei whakatika.
Anei te mea e kī atu ana ahau ki aku kiritaki katoa: kāore koe e hiahia ki te noho me te tohu ngoikore. Mena kei raro tonu tō dBm i te -90, hewhakanui tohu whatunga waea pūkoro ka taea te āwhina. Ka kukume mai i taua tohu ngoikore, kino dBm mai i waho, ka whakanui ake, ka tukuna ki roto i tō wāhi—ka huri i te -100 dBm ki te -70, neke atu rānei, kia whiwhi ai koe i te ratonga pono anō, penapenahia ō moni mō tētahi mea e whakaoti rapanga ana.
He tini rawa ngā tāngata kua kite ahau e hoko ana i ngā whakakaha kāore e hiahiatia ana e rātou, nā te mea e whakaaro ana rātou "he pai ake te nui o te tohu." Engari e ako ana a dBm i a tātou ko te taurite te mea nui—me nui noa te tohu hei whakaoti i te mahi. Ko te mea nui ko te mōhio ki ō tau, kia taea ai e koe te whakatau whai whakaaro.
Mena kei te pōhēhē tonu koe mō te pānui o tō dBm, kāore rānei koe i te tino mōhio mēnā he pai te whakakaha tohu māu, kaua e mangere ki te whakapā mai. Ka koa ahau ki te ārahi i a koe i roto i te tirotiro i tō tohu, te whakamārama i te tikanga o ō tau, me te āwhina i a koe ki te kimi i tētahiotinga māmā mō te kapinga tohue pai ana mō tō wāhi. Kāore he kupu whakapati, kāore he whakatairanga hokohoko—he tohutohu pono noa iho nā tetahi kua whakatika i ngā raruraru tohu mō te tekau tau neke atu.
Wā tuku: Paenga-whāwhā-15-2026