Kana wakamboshandisa RF (radio frequency) communication, cellular networks, kana antenna systems, unogona kusangana neshoko rekuti LMR cable. Asi chii chaizvo uye nei ichishandiswa zvakanyanya? Muchinyorwa chino, tichaongorora kuti LMR cable chii, hunhu hwayo hukuru, uye kuti nei iri sarudzo inofarirwa kune maRF applications, uye topindura mubvunzo wekuti 'Chii chinonzi LMR cable?'.
Nzwisisa tambo yeLMR coaxial
Tambo yeLMR itambo yecoaxial yakagadzirirwa kutumira masaini inoshanda zvakanyanya uye isina kurasikirwa zvakanyanya mumashandisirwo eRF. Tambo dzeLMR dzinogadzirwa neTimes Microwave Systems uye dzinozivikanwa nekudzivirira kwadzo kwakanaka, kurasikirwa kwemasaini kwakaderera, uye kugara kwenguva refu, zvichiita kuti dzive dzakanakira GPS yekutaurirana isina waya, Sarudzo yakanaka kune radar nedzimwe masisitimu eRF. Kusiyana netambo dzechinyakare dzecoaxial, tambo dzeLMR dzakagadzirwa nezvikamu zvakasiyana-siyana zvekudzivirira uye dielectric kuti ive nechokwadi chekuti masaini ari nani. Dzinouya muhukuru hwakasiyana hwekusarudza kubva, dzakadai seLMR-195, LMR-240, LMR-400, uye LMR-600, imwe neimwe yakagadzirirwa kugadzirisa simba uye kurasikirwa nemasaini zvakasiyana.
Hunhu hukuru hwetambo yeLMR coaxial
Tambo dzeLMR dzinoonekwa zvakanyanya mumunda wetambo dze coaxial nekuda kwechimiro chadzo chakasiyana uye zvakanakira mashandiro adzo:
1. Kurasikirwa kwechiratidzo kwakaderera
Chimwe chezvakanakira zvikuru zvetambo dzeLMR dzine kurasikirwa kushoma kwechiratidzo ndechekudzikira kwadzo padaro refu (kurasikirwa kwechiratidzo). Izvi zvinoitwa kuburikidza nekudzivirira uye kudzivirira kwe dielectric kwepamusoro-soro, izvo zvinoderedza kurasikirwa kwesimba kana zviratidzo zvichipfuura nepatambo.
2. Kushanda zvakanaka kwekudzivirira
Dhizaini yetambo yeLMR ine zvikamu zvakawanda zvekudzivirira, zvinowanzo sanganisira aruminiyamu strip shielding yekudzivirira EMI (electromagnetic interference). Kuruka shielding yekunze kunowedzera kugara kwenguva refu uye kunoderedza kupindira. Kudzivirira uku kunoita kuti masaini akasimba uye akajeka, zvichiita kuti tambo dzeLMR dzive sarudzo yakanaka kune maRF applications ane hungwaru.
3. Kugara kwenguva refu uye kuramba kwemamiriro ekunze
Times Microwave Systems inogadzira tambo dzeLMR, dzine sheath yakasimba yekunze yakagadzirwa ne polyethylene (PE) kana thermoplastic elastomer (TPE), zvichiita kuti dzisatsvedzere mwaranzi ye ultraviolet, hunyoro, uye tembiricha yakanyanya. Dzimwe mhando, dzakadai seLMR-UF (Ultra Flex), dzinopa kuchinjika kwakawedzerwa kwekuisa kunoda kukotama nekufamba-famba nguva nenguva.
4. Kugadzwa kunochinjika uye kuri nyore
Kana tichienzanisa netambo dzechinyakare dzakasimba dze coaxial, tambo dzeLMR dzine kuchinjika kwakanyanya uye dzakareruka, zvichiita kuti kuiswa kwadzo kuve nyore. Radius yekukombama kwadzo idiki zvakanyanya pane yetambo dzeRF dzakafanana, izvo zvinoita kuti dzikwanise kuiswa zvakasimba munzvimbo dzakavharirwa.
5. Kuenderana neRF connectors
Tambo dzeLMR dzinotsigira zvinobatanidza zvakawanda, kusanganisira zvinobatanidza zvemhando yeN (zvinowanzoshandiswa mumapurogiramu eantenna neRF). Chinobatanidza cheSMA (chemawaya asina waya uye masisitimu eGPS). Chinobatanidza cheBNC (chinozivikanwa mukuparadzira nekubatanidza). Kubatana uku kunoita kuti zvikwanise kushandiswa zvakanyanya mumaindasitiri akasiyana-siyana.
Mashandisirwo Akajairika eLMR Cables
Nekuda kwekushanda kwayo kwakanaka, tambo dzeLMR dzinoshandiswa zvakanyanya mumaindasitiri anovimba nekutaurirana kweRF. Mamwe emashandisirwo akajairika anosanganisira network dzisina waya nenharembozha, masisitimu eantenna neRF, GPS nesatellite communications, mashandisirwo emuchadenga, masisitimu ekutarisa nekuchengetedza.
Sarudza tambo yeLMR yakakodzera
Kusarudzwa kwemhando chaiyo yetambo yeLMR kunoenderana nezvinhu zvakati wandei, zvinosanganisira kuwanda, daro, simba rekushandisa, uye mamiriro ekunze. Heano mamwe maitiro akajairika:
LMR-195 neLMR-240: Yakakodzera kushandiswa kwenguva pfupi senge maantenna eWiFi uye masisitimu eGPS.
LMR-400: Sarudzo yepakati-yekurasikirwa yakaderera inowanzoshandiswa mumasisitimu eredhiyo enharembozha uye maviri-nzira.
LMR-600: Yakakodzera kushandiswa kure uko kurasikirwa kwechiratidzo kunofanira kuderedzwa zvakanyanya.
Kana uchida kuchinjika kwemapurogiramu efoni, waya yeLMR-UF (Ultra Flex) isarudzo yakanakawo.
Nguva yekutumira: Kurume-13-2025