Kev sib txuas lus tseem ceeb yog hais txog kev sib pauv ntawm cov ntaub ntawv tseem ceeb rau kev ua haujlwm thiab kev nyab xeeb ntawm cov tib neeg, cov koom haum, lossis zej zog tag nrho.Cov kev sib txuas lus no feem ntau yog lub sij hawm-sensitive thiab tuaj yeem koom nrog ntau txoj kev thiab thev naus laus zis.Kev sib txuas lus tseem ceeb ua lub luag haujlwm tseem ceeb hauv cov xwm txheej kub ntxhov, kev nyab xeeb rau pej xeem, thiab cov kev pabcuam tseem ceeb.
Cov zaus bands siv rau kev sib txuas lus tseem ceeb sib txawv nyob ntawm seb cov ntawv thov tshwj xeeb thiab cheeb tsam.Cov chaw sib txawv thiab cov koom haum tuaj yeem siv ntau zaus sib txawv raws li kev tswj hwm kev faib tawm, kev xav tau, thiab kev xav tau ntawm kev sib koom tes.Nov yog qee qhov kev siv ntau zaus rau kev sib txuas lus tseem ceeb:
- VHF (Hloov Ntau zaus) thiab UHF (Ultra High Frequency):
- VHF (30-300 MHz): Feem ntau siv rau kev sib txuas lus kev nyab xeeb rau pej xeem, suav nrog tub ceev xwm, hluav taws kub, thiab kev pabcuam xwm txheej ceev.
- UHF (300 MHz - 3 GHz): Feem ntau siv rau ob qho tib si pej xeem kev nyab xeeb thiab kev sib txuas lus tseem ceeb.
- 700 MHz thiab 800 MHz Bands:
- 700 MHz: Siv rau kev sib txuas lus kev nyab xeeb rau pej xeem, tshwj xeeb hauv Tebchaws Meskas.
- 800 MHz: Siv rau ntau yam kev sib txuas lus tseem ceeb, suav nrog kev nyab xeeb rau pej xeem, kev siv hluav taws xob, thiab kev thauj mus los.
- TETRA (Terrestrial Trunked Radio):
- TETRA ua haujlwm nyob rau hauv UHF band thiab yog dav siv rau kev tshaj xov tooj cua xov tooj cua (PMR) systems, tshwj xeeb tshaj yog nyob rau hauv cov teb chaws Europe.Nws muab kev sib txuas lus ruaj ntseg thiab muaj txiaj ntsig rau pej xeem kev nyab xeeb thiab lwm yam kev siv tseem ceeb.
- P25 (Project 25):
- P25 yog cov qauv tsim rau kev sib txuas lus xov tooj cua digital tsim los siv los ntawm cov koom haum kev nyab xeeb rau pej xeem hauv North America.Nws ua haujlwm hauv VHF, UHF, thiab 700/800 MHz bands.
- LTE (Long-Term Evolution):
- LTE, feem ntau cuam tshuam nrog kev lag luam hauv xov tooj ntawm tes, tau nce ntxiv rau kev sib txuas lus tseem ceeb, muab cov ntaub ntawv dav dav rau pej xeem kev nyab xeeb thiab lwm yam kev siv tseem ceeb.
- Kev sib txuas lus satellite:
- Satellite kev sib txuas lus yog siv rau kev sib txuas lus tseem ceeb nyob rau hauv tej thaj chaw deb los yog kev puas tsuaj-stricken thaj chaw uas ib txwm terrestrial infrastructure tej zaum yuav cuam tshuam.Ntau zaus bands raug faib rau kev sib txuas lus satellite.
- Microwave Bands:
- Microwave zaus, xws li cov nyob rau hauv 2 GHz thiab 5 GHz bands, qee zaum siv rau kev sib txuas lus taw tes rau hauv qhov tseem ceeb, nrog rau kev siv hluav taws xob thiab kev thauj mus los.
Raws li ib tug kws manufacturers ntawmRF Cheebtsam, zoo licais tawm, cov circulators, thiablim, Jingxin tsim thiab tsim ntau hom khoom siv los txhawb cov kev daws teeb meem ntawm kev sib txuas lus tseem ceeb.Zoo siab txais tos hu rau peb @sales@cdjx-mw.com for more information.
Lub sij hawm xa tuaj: Nov-30-2023
