Maitiro Ekuvaka Redhiyo Yekutumira Madaro Marefu
Kutumira maredhiyo kure itekinoroji inotibvumira kutumira nekugamuchira masaini eredhiyo kure kure. Inogona kushandiswa kune zvinangwa zvakasiyana-siyana, kubva pakutaurirana kwevasina ruzivo kusvika kumashandisirwo ezvekutengeserana nemauto. Kuvaka sisitimu yekutumira maredhiyo kure kure kunoda kunzwisisa kwakakwana misimboti yeredhiyo yekutanga, matekiniki ekutumira, uye michina nezvikamu zvakakodzera.
Chinyorwa chino chichataura nezvematanho akakosha ekuvaka redhiyo inotumira mashoko kure, kusanganisira hunyanzvi nemidziyo inodiwa.
1. Nzwisisa Nheyo Dzekutanga dzeRedhiyo
1.1 Mafungu eRedhiyo
Mafungu eredhiyo rudzi rwemwaranzi yemagetsi ine frequency yakaderera pane chiedza chinoonekwa. Mafungu aya anogona kupararira mu vacuum uye mumhepo. Mafungu eredhiyo ane hunhu hwakawanda hwakakosha, hwakadai sefrequency, wavelength, uye speed.
1.2 Frequency uye Bandwidth
Mafambiro eredhiyo anotsanangurwa sehuwandu hwema cycles pasekondi uye anoyerwa muHertz (Hz). Bandwidth imhando yema frequency anoshandiswa nesignal inotumirwa. Kusarudza ma frequency akakodzera kwakakosha kudzivirira kukanganiswa nemamwe masignal.
1.3 Kuchinja-chinja
Maitiro ekushandura anosanganisira kushandura hunhu hwemafungu emutakuri kuti atumire ruzivo. Kune mhando dzakasiyana dzekushandura, dzakadai se:
- Kuchinja Kweamplitude (AM)
- Kuchinja Mafambiro (FM)
- Kuchinja Kwechikamu (PM)
Nzira yega yega yekushandura ine zvayakanakira nezvayakaipira.
2. Kusarudzwa kweMidziyo
2.1 Chinotumira
Chinotumira mashoko (transmitter) chinhu chinotumira mashoko eredhiyo. Chinotumira mashoko chine zvikamu zvakawanda zvepakati:
– Oscillator: Inogadzira chiratidzo chekutakura chine frequency yakati.
– Modulator: Inochinja chiratidzo chemutakuri zvichienderana nedata rinotumirwa.
– Amplifier: Inowedzera simba remasaini kuitira kuti ikwanise kusvika kure.
– Antena: Inoburitsa masaini mumhepo.
2.2 Mugamuchiri
Chinogamuchira (receiver) mudziyo unogamuchira masaini eredhiyo. Zvinhu zvikuru zvechinogamuchira zvinosanganisira:
– Antena: Inotora masaini eredhiyo anotumirwa.
- Demodulator: Inoshandura chiratidzo chemutakuri kuita data rekutanga.
– Amplifier: Inowedzera simba rechiratidzo chinogamuchirwa.
– Sefa: Inobvisa kupindira kana ruzha kubva pachiratidzo chinogamuchirwa.
2.3 Kanyanga
MaAntena chinhu chakakosha mumasisitimu ekutumira maredhiyo. MaAntena anogona kutora mhando dzakasiyana, dzakadai semadipole, yagis, kana parabolic dish. Sarudzo yeantenna inoenderana nezvinodiwa chaizvo uye mashandisirwo ekutumira maredhiyo kure.
3. Dunhu uye Chirongwa
3.1 Dunhu Rekutumira Rakareruka
Kuti ugadzire chinotumira chiri nyore, dunhu rekutanga rinowanzoshandiswa nderekuti:
– Crystal Oscillator: Inoshandisa makristaro equartz kugadzira frequency yakagadzikana.
– Transistor kana IC: Inoshanda semuchina wekusimudzira masaini.
- MaCapacitors neInductors: Rubatsiro mukuita modulation.
Semuenzaniso, pakushandisa AM modulation, tinoda oscillator circuit ine carrier frequency inogona kuchinjwa neruzha kubva kumakrofoni.
3.2 Dunhu reMugamuchiri
Dunhu rekugamuchira riri nyore rinowanzo sanganisira:
– Antena: Inobata chiratidzo chinotumirwa.
– Musanganiswa: Inosanganisa chiratidzo chinogamuchirwa nechiratidzo chinobva kuoscillator yemuno kuti igadzire frequency yepakati (IF).
- Amplifier uye Demodulator: Inogamuchira masaini eIF uye inoawedzera uye inoashandura kuita fomu redata rinoshanda.
4. Kugadzirisa uye Kugadzirisa
4.1 Kurongwa Kwemafrequency
Usati watanga kutumira, zvakakosha kuve nechokwadi chekuti chinotumira nechinhu chinogamuchira zvakagadziridzwa kuti zvienderane nefrequency imwe chete. Izvi zvinogona kuitwa nekushandisa generator yesignal uye frequency meter kuti uve nechokwadi chekuti zvishandiso zvese zviri mukati mehuwandu hwakafanana hwema frequency tolerance.
4.2 Kuenzanisa Antena
MaAntenna anofanira kuenzaniswa kuti aenderane nefrequency yakasarudzwa yekushandisa. Kuenzanisa kunosanganisira kugadzirisa kureba kweantenna uye kurongeka kwayo kuti ibudirire zvakanyanya. Mita yeStanding Wave Ratio (SWR) inowanzo shandiswa kuona kuti antenna iri kushanda zvakanaka.
5. Mutemo uye Mutemo
5.1 Rezinesi
Nyika zhinji dzinodzora kushandiswa kwemafrequencies eredhiyo kuburikidza nemasangano anodzora kutaurirana. Usati wavaka kana kushandisa sisitimu yeredhiyo iri kure, iva nechokwadi chekuti wanzwisisa mitemo inoshanda uye, kana zvichidikanwa, wana marezenisi anodiwa.
5.2 Kushandisa Nguva Yakakodzera
Kushandisa mafrequency akakodzera kwakakosha kudzivirira kukanganiswa nemamwe mashandisirwo akadai sendege, mauto, kana mabasa ekukurumidzira. Masangano ekutonga anowanzova nematafura ekugoverwa kwemafrequency ayo anofanira kutevedzwa.
6. Kuedza uye Kugadzirisa Matambudziko
6.1 Bvunzo reMunda
Ita bvunzo dzemumunda kuti uve nechokwadi chekuti sisitimu yekutumira mashoko iri kushanda sezvaitarisirwa. Tarisa huwandu hwemasaini, kunaka kwezwi/data, uye cherechedza chero kukanganiswa kana zvimwe zvinetso.
6.2 Kugadzirisa Matambudziko
Kana paine matambudziko akadai sechiratidzo chisina simba kana kupindira, matanho ekugadzirisa matambudziko anogona kusanganisira:
– Tarisa zvakare kubatana kwetambo nedunhu.
- Dzorera frequency kana chiteshi.
- Wedzera simba rekuburitsa transmitter.
- Shandisa antenna ine gain yakakwira.
7. Mashandisirwo Epamusoro uye Kuvandudzwa
Mushure mekubudirira kugadzira nekuyedza sisitimu yekutumira redhiyo iri kure, mashandisirwo akasiyana-siyana uye zvimwe zvinovandudzwa zvinogona kuitwa, zvakaita se:
- Kushandisa matekiniki epamusoro ekushandura: Kuvandudza kunaka kwekutumira kana kushanda zvakanaka kwebandwidth.
– Kushandisa Digital Signal Processing (DSP): Kuderedza ruzha nekukanganiswa.
- Kubatanidzwa nedzimwe nzira dzekutaurirana: Semakomputa kana internet kune maapplication akawanda.
Mhedziso
Kuvaka sisitimu yekutumira maredhiyo kure kunoda kwete kunzwisisa kwakasimba chete, asiwo kuronga kwakanyatsonaka uye kusarudza michina nokungwarira. Nekufunga nezvenheyo dzekutanga dzeredhiyo, kusarudza michina yakakodzera, kugadzira dunhu rinoshanda zvakanaka, kuita setup uye calibration yakakodzera, uye kutevedzera mitemo inoshanda, unogona kubudirira kuvaka sisitimu yekutumira maredhiyo kure yakavimbika.
Kuburikidza nekudzidza nekuyedza, kugona kwako kuvaka nekushandisa masisitimu ekutumira maredhiyo kucharamba kuchivandudzwa, zvichivhura mikana yekushandiswa kwakaoma uye kutsva mune ramangwana.
