Mu mauthenga opanda mafoni, mawu akuti "Hz" (omwe amatanthauza "hertz," pambuyo pa sayansi yazaka za m'ma 1900, Heinrich Hertz) akunena za kuchuluka kwa mauthenga a wailesi muzokambirana pa mphindi:
- 1Hz ikufanana ndi kayendedwe kamodzi pamphindi.
- 1MHz (megahertz) ikufanana ndi milioni imodzi pamphindi (kapena 1 miliyoni Hz).
- 1GHz (gigahertz) ikufanana ndi biliyoni imodzi pamphindi (kapena 1000 MHz).
Mafilimu opanda makompyuta amatha kugwiritsa ntchito maulendo osiyanasiyana opatsirana, malinga ndi makina omwe amagwiritsa ntchito. Mapulogalamu opanda waya amagwiranso ntchito pafupipafupi (otchedwa magulu ) m'malo mwa nambala yeniyeni yeniyeni.
Makompyuta omwe amagwiritsira ntchito mauthenga a pawailesi omwe sagwiritsa ntchito maulendo apamwamba sagwiritsa ntchito mofulumira kwambiri kuposa makina opanda waya osasuntha.
Hz mu Wi-Fi Networking
Ma Wi-Fi onse amagwira ntchito m'magulu a 2.4GHz kapena 5GHz. Izi ndi mndandanda wa maulendo a wailesi omwe amatseguka poyankhulana ndi anthu (ie, osagwiritsidwa ntchito) m'mayiko ambiri.
Magulu a 2.4GHz Wi-Fi amachokera ku 2.412GHz pamapeto otsika mpaka 2,472GHz pamapeto otsiriza (ndi gulu limodzi lokha limene limathandizidwa pang'ono ku Japan). Kuyambira ndi 802.11b mpaka ku 802.11ac atsopano, ma intaneti a 2.4GHz a Wi-Fi onse amagawana magulu omwewo ndi ogwirizana.
Wi-Fi inayamba kugwiritsa ntchito ma radi 5GHz kuyambira 802.11a , ngakhale kuti ntchito yawo yaikulu m'nyumbayi inayamba ndi 802.11n okha . Magulu a 5GHz Wi-Fi amachokera ku 5.170 mpaka 5,825GHz, ndipo magulu ena ochepa omwe amathandizidwa ku Japan okha.
Mitundu Yina ya Kusayimira Wopanda Wakaimiridwa mu Hz
Pogwiritsa ntchito Wi-Fi, ganizirani zitsanzo zina za mauthenga opanda waya:
- Mafoni osayendetsa opanda zipangizo omwe amagwiritsidwa ntchito mumtundu wa 900MHz, monga momwe muyeso wa 802.11ah watsopano umayendera
- Kugwirizana kwa ma Bluetooth kumagwiritsa ntchito ma 2.4GHz, ofanana ndi Wi-FI, koma Bluetooth ndi Wi-Fi sizigwirizana.
- Ma protocol angapo opangidwa ndi wireless 60GHz apangidwa kuti apange ntchito yapadera yomwe imakhudza deta yochuluka kwambiri yodutsa maulendo aifupi kwambiri.
N'chifukwa chiyani kusiyana kwakukulu kwakukulu? Chifukwa chimodzi, mitundu yosiyanasiyana ya mauthenga imayenera kugwiritsa ntchito maulendo osiyana kuti asagwirane wina ndi mnzake. Kuonjezera apo, zizindikiro zapamwamba zowonjezera monga 5GHz zimanyamula zinthu zambiri (koma, pobwezera, zili ndi malamulo akuluakulu pa mtunda ndipo zimafuna mphamvu zambiri kuti ziloweretse zoletsedwa).