Tse ka Hare
Likamoreng tsa lehlabula, letšoao la thelevishene le ka fumanoa ka seoelo ntle le ho hōlisa: e hole haholo le motho ea pheta-phetang, hangata sebaka se sa lekane, 'me lifate lia kena-kenana. Bakeng sa boleng bo tloaelehileng ba "setšoantšo", li-antenna lia hlokahala. Mang kapa mang ea tsebang ho sebetsana le tšepe ea soldering bonyane hanyenyane a ka etsa antenna bakeng sa ho fana ka matsoho a hae. Aesthetics ka ntle ho motse ha e fuoe bohlokoa bo bongata, ntho e ka sehloohong ke boleng ba kamohelo, moralo o bonolo, theko e tlaase le ho tšepahala. U ka etsa liteko 'me u iketsetse tsona.
Antenna e bonolo ea TV
Haeba motho ea pheta-pheta a fumaneha ka har'a lik'hilomithara tse 30 ho tloha dacha ea hau, u ka etsa karolo e bonolo ka ho fetisisa ea ho amohela moralo. Tsena ke li-tubes tse peli tse tšoanang tse hokahaneng ka thapo. Sehlahisoa sa cable se feptjoa ho kenya letsoho ho lumellanang le TV.
Seo u se hlokang ho etsa antenna ena ea TV
Pele ho tsohle, o hloka ho tseba hore na tora e haufi ea TV e hasoa hangata hakae. Bolelele ba "litelu" bo itšetlehile ka makhetlo a mangata. Sehlopha sa khaso se maemong a 50-230 MHz. E arotsoe ka likanale tse 12. E 'ngoe le e' ngoe e hloka bolelele ba eona ba li-tubes. Lethathamo la likanale tsa thelevishene tsa lefatše, maqhubu a tsona le mekhahlelo ea antenna ea thelevishene bakeng sa ho iketsetsa li tla fanoa tafoleng.
| Nomoro ea kanale | Maqhubu a kanale | Bolelele ba vibrator - ho tloha pheletsong e 'ngoe ho ea ho e' ngoe ea li-tubes, cm | Bolelele ba likhoele bakeng sa sesebelisoa se ts'oanang, L1 / L2 cm |
|---|---|---|---|
| 1 | 50 MHz | 271-276 bona | Cm 286/95 cm ,. |
| 2 | 59,25 MHz | 229-234 bona | Cm 242/80 cm ,. |
| 3 | 77,25 MHz | 177-179 bona | Cm 187/62 cm ,. |
| 4 | 85,25 MHz | 162-163 bona | Cm 170/57 cm ,. |
| 5 | 93,25 MHz | 147-150 bona | Cm 166/52 cm ,. |
| 6 | 175,25 MHz | 85 cm, | Cm 84/28 cm ,. |
| 7 | 183,25 MHz | 80 cm, | Cm 80/27 cm ,. |
| 8 | 191,25 MHz | 77 cm, | Cm 77/26 cm ,. |
| 9 | 199,25 MHz | 75 cm, | Cm 74/25 cm ,. |
| 10 | 207,25 MHz | 71 cm, | Cm 71/24 cm ,. |
| 11 | 215,25 MHz | 69 cm, | Cm 68/23 cm ,. |
| 12 | 223,25 MHz | 66 cm, | Cm 66/22 cm ,. |
Kahoo, ho etsa antenna ea TV ka matsoho a hau, u hloka lisebelisoa tse latelang:
- Pipe ea tšepe e khuts'oane ka 6-7 cm ho feta e bontšitsoeng tafoleng. Boitsebiso - tšepe leha e le efe: koporo, tšepe, duralumin, joalo-joalo Diameter - ho tloha ho 8 mm ho ea ho 24 mm (hangata ho beha 16 mm). Boemo bo ka sehloohong: "litelu" ka bobeli li tlameha ho tšoana: ho tloha boitsebisong bo le bong, bolelele bo lekanang, ho tloha phala ea bophara bo lekanang le botenya ba lerako.
- Cable ea TV e nang le impedance ea 75 ohm. Bolelele ba eona bo ikemiselitsoe sebakeng sa heno: ho tloha ho antenna ho ea ho TV, hammoho le mithara le halofo bakeng sa sagging le halofo ea mitha bakeng sa loop e tšoanang.
- Sekhechana sa textolite e teteaneng kapa getinax (bonyane 4 mm botenya),
- Li-clamps tse 'maloa kapa lithapo tsa tšepe ho tiisa liphaephe ho ea tšoereng.
- Molamu oa antenna (peipi ea tšepe kapa sekhutlo, e nang le bophahamo bo seng bo phahameng haholo - sekoahelo sa lehong, joalo-joalo).
Antenna e bonolo bakeng sa ho fana: esita le ngoana oa sekolo a ka e etsa ka matsoho a hae
Ho ka ba monate ho ba le tšepe ea solder, flux bakeng sa ho kopanya koporo le solder letsohong: ho eletsoa ho rekisa likhokahano tsohle tsa li-conductor tse bohareng: boleng ba setšoantšo bo tla ba betere mme antenna e tla sebetsa nako e telele. Joale libaka tsa soldering li hloka ho sireletsoa ho tloha ho oxidation: ho molemo ho e tlatsa ka lera la silicone, u ka sebelisa epoxy, joalo-joalo E le khetho ea ho qetela, e tiise ka tepi ea motlakase, empa sena ha se tšepahale haholo.
Antenna ena ea lapeng ea TV, esita le lapeng, e tla etsoa ke ngoana. U hloka ho khaola tube ea bolelele bo lumellanang le maqhubu a khaso ea phetisetso e haufi, ebe u e khaola ka halofo hantle.
Taelo ea kopano
Li-tubes tse hlahisoang li batalatsoa ka lehlakoreng le le leng. Ka lipheletsong tsena li khomaretsoe ho motho ea tšoereng - sengoathoana sa getinax kapa textolite 4-6 mm thick (bona setšoantšo). Li-tubes li behiloe ka thōko ho 6-7 cm ho tloha ho tse ling, lipheletsong tsa tsona tse hōle li lokela ho ba hōle le tafole. Li tsepamisitsoe ho sets'oants'o ka li-clamps, li tlameha ho tšoarella ka thata.
Vibrator e kentsoeng e tsitsitsoe holim'a mast. Hona joale o hloka ho hokahanya "litelu" tse peli ka sesebelisoa se ts'oanang. Ena ke loop ea cable e nang le khanyetso ea 75 ohms (mofuta oa RK-1, 3, 4). Mekhahlelo ea eona e bonts'itsoe kholomong e ka ho le letona ea tafole, mme hore na e etsoa joang e ka lehlakoreng le letona la foto.
Li-cores tse bohareng tsa mohala li phunyeletsoa (li rekisoa) ho ea lipheletsong tse bataletseng tsa li-tubes, li-braid tsa tsona li kopantsoe le sengoathoana sa mokhanni o tšoanang. Ho bonolo ho fumana terata: khaola sengoathoana ho tloha ho thapo hanyenyane ho feta boholo bo hlokahalang 'me u se lokolle ho likhetla tsohle. Arola lipheletsong 'me u phuthele ho li-conductors tsa cable (ho molemo ho solder).
Ebe li-conductor tse bohareng tse tsoang likotong tse peli tsa loop e ts'oanang le mohala o eang TV li hokahane. Braid ea bona e boetse e hokahane le terata ea koporo.
Ketso ea ho qetela: sekoti se bohareng se khomaretsoe ka har'a bar, 'me mohala o theohelang o phunyeletsoa ho eona. Sebaka se phahamisetsoa bophahamong bo hlokahalang 'me se "lokisitsoe" moo. Ho hlokahala batho ba babeli ho theha: e mong o fetola antenna, oa bobeli o shebella TV mme o lekola boleng ba setšoantšo. Ha u se u hlokometse hore na lets'oao le amoheloa hantle ho tsoa hokae, antenna ea ho iketsetsa e behiloe sebakeng sena. E le hore u se ke ua utloa bohloko ka nako e telele ka "tuning", sheba moo ba amohelang baahelani (li-antenna tsa lefatše) ba lebisoang teng. Antenna e bonolo ka ho fetisisa ea ho fana ka matsoho a hau e entsoe. Beha le ho "ts'oara" tataiso ka ho e phethola ho latela axis ea eona.
Shebella video e mabapi le mokhoa oa ho khaola thapo ea coaxial.
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Loop ho tloha phala
Antenna ena ea ho iketsetsa eona e thata haholoanyane ho e etsa: o hloka bender ea pipe, empa sebaka sa kamohelo se seholoanyane - ho fihla ho 40 km. Lisebelisoa tsa ho qala li batla li tšoana: tube ea tšepe, mohala le molamu.
Radius ea bend ea phala ha e bohlokoa. Hoa hlokahala hore phala e be le bolelele bo hlokahalang, 'me sebaka se pakeng tsa lipheletsong ke 65-70 mm. "Mapheo" ka bobeli a lokela ho ba bolelele bo lekanang, 'me lipheletsong li lokela ho lekana bohareng.
Bolelele ba phala le cable bo bontšoa tafoleng. Fumana hore na motho ea pheta-phetang haufi le uena o phatlalatsa hangata hakae, khetha mohala o loketseng. E ile ea phunya phala ea boholo bo hlokahalang (bophara ka ho khetheha ke 12-18 mm, bakeng sa bona ho fanoa ka mekhahlelo ea loop e bapisang).
| Nomoro ea kanale | Maqhubu a kanale | Bolelele ba vibrator - ho tloha pheletsong e 'ngoe ho ea ho e' ngoe, cm | Bolelele ba thapo bakeng sa sesebelisoa se ts'oanang, cm |
|---|---|---|---|
| 1 | 50 MHz | 276 cm, | 190 cm, |
| 2 | 59,25 MHz | 234 cm, | 160 cm, |
| 3 | 77,25 MHz | 178 cm, | 125 cm, |
| 4 | 85,25 MHz | 163 cm, | 113 cm, |
| 5 | 93,25 MHz | 151 cm, | 104 cm, |
| 6 | 175,25 MHz | 81 cm, | 56 cm, |
| 7 | 183,25 MHz | 77 cm, | 53 cm, |
| 8 | 191,25 MHz | 74 cm, | 51 cm, |
| 9 | 199,25 MHz | 71 cm, | 49 cm, |
| 10 | 207,25 MHz | 69 cm, | 47 cm, |
| 11 | 215,25 MHz | 66 cm, | 45 cm, |
| 12 | 223,25 MHz | 66 cm, | 44 cm, |
Seboka
The tube ea bolelele bo hlokahalang e kobehile, e etsa hore e lumellane ka ho feletseng mabapi le setsi. Moeli o le mong o batalatsoa mme oa riteloa / o tiisitsoe. Tlatsa ka lehlabathe, 'me u koale lehlakore la bobeli. Haeba ho se na welding, o ka plug lipheletsong, feela beha li-plug ho sekhomaretsi se setle kapa silicone.
Vibrator e hlahisoang e tsitsitsoe holim'a mast (thupa). Li phunyeletsoa lipheletsong tsa phala, ebe li-conductors tse bohareng tsa loop e ts'oanang le mohala o eang TV o rekisoa. Mohato o latelang ke ho hokahanya sengoathoana sa terata ea koporo ntle le ho kenya letsoho ho braid ea likhoele. Kopano e phethiloe - o ka tsoela pele ho "tlhophiso".
Haeba u sa batle ho iketsetsa eona, bala mokhoa oa ho khetha antenna bakeng sa ho fana mona.
Antenna ea biri
Ho sa tsotellehe 'nete ea hore o shebahala a frivolous, setšoantšo se ba betere haholo. E hlahlobiloe hangata. E leke!
Biri ka ntle antenna
Batlana le:
- makotikoti a mabeli a nang le matla a 0,5 litres,
- sengoathoana sa patsi kapa polasetiki e bolelele ba limithara tse 0,5,
- sengoathoana sa terata ea TV RG-58,
- tšepe ea soldering,
- flux bakeng sa aluminium (haeba makotikoti ke aluminium),
- solder.
Mokhoa oa ho etsa antenna ka makotikoti
Re bokella tjena:
- Re phunya lesoba ka tlase ho nkho ka thata bohareng (bophara ba 5-6 mm).
- Ka sekoti sena re otlolla mohala, re o ntša ka lesoba sekoahelong.
- Re lokisa nkho ena ka letsohong le letšehali ho sets'oants'o e le hore mohala o lebisoe bohareng.
- Re ntša thapo ka lekotikong ka hoo e ka bang 5-6 cm, re tlose sekoaelo ka 3 cm, re qhaqha lesela.
- Re khaola braid, bolelele ba eona e lokela ho ba 1,5 cm.
- Re e abela holim'a sekoti ebe re e rekisa.
- Mokhanni o bohareng o hlahelletseng ka 3 cm o tlameha ho rekisoa ka tlase ho lekotikoti la bobeli.
- Sebaka se pakeng tsa libanka tse peli se tlameha ho etsoa se senyenyane ka hohle kamoo ho ka khonehang, 'me se lokisoe ka tsela e itseng. Khetho e 'ngoe ke teipi e khomarelang kapa teipi ea ho kopanya.
- Ke hona, antenna ea maiketsetso ea UHF e se e lokile.
Qetella ntlha e 'ngoe ea thapo ka polaka e loketseng, e kenye ka har'a sokete ea TV eo u e hlokang. Moqapi ona, ka tsela, o ka sebelisoa ho amohela thelevishene ea digital. Haeba TV ea hau e tšehetsa sebopeho sena sa matšoao (DVB T2) kapa ho na le lebokose le khethehileng la sete-top bakeng sa TV ea khale, u ka tšoara letšoao ho tsoa ho se pheta-pheta se haufi. U hloka feela ho tseba hore na e hokae, 'me u tsamaise antenna ea hau ea thelevishene e entsoeng ka makotikoti a teng moo.
Moralo o tšoanang o ka fetoloa ho amohela liteishene tsa VHF. Ho e-na le linkho tsa 0,5 lithara, apara litara e le 'ngoe. E tla fumana sehlopha sa MW.
Khetho e 'ngoe: haeba u se na tšepe ea solder, kapa ha u tsebe ho solder, u ka e nolofatsa. Tlama makotikoti a mabeli ka sebaka sa lisenthimithara tse 'maloa ho ea ho se tšoereng. Hlatsoa pheletsong ea mohala ka 4-5 centimeters (tlosa ka hloko ho koala). Arola braid, e sothe ka har'a bongata, etsa lesale ho eona, eo ho eona u kenyang sekoti sa ho iketsetsa. Ho tloha ho conductor e bohareng, etsa selikalikoe sa bobeli 'me u tšele sekoti sa bobeli sa ho itšeha ho sona. Joale, botlaaseng ba lekotikoti le le leng, u hloekisa (ka sandpaper) letheba leo u phunyang lisekere ho lona.
Ha e le hantle, solder e hlokahala bakeng sa ho kopana hantle: ho molemo ho etsa tin le solder lesale la braid, hammoho le sebaka sa ho kopana le tšepe ea lekotikoti. Empa esita le ho li-screws tsa ho itšebetsa ho ea hantle, leha ho le joalo, ho kopana nako le nako ho na le oxidized mme ho hloka ho hloekisoa. Ha ho “hloa lehloa” u tla tseba hore na hobaneng…
U ka 'na ua ipotsa hore na u ka etsa brazier joang ka balloon kapa barrel, u ka bala ka eona mona.
Iketsetse antenna ea TV ea digital
Moralo oa li-antenna - foreimi. Bakeng sa mofuta ona oa moamoheli, o tla hloka sefapano se entsoeng ka mapolanka a lehong le thapo ea thelevishene. U tla boela u hloke teipi ea motlakase, lipekere tse seng kae. Tsohle.
Re se re boletse hore ho amohela lets'oao la dijithale, o hloka feela antenna ea lefats'e ea decimeter le decoder e nepahetseng. E ka hahoa ho TV (moloko o mocha) kapa ea etsoa e le sesebelisoa se arohaneng. Haeba TV e na le tšebetso ea ho amohela lets'oao khoutung ea DVB T2, hokela phallo ea lenakana ka kotloloho ho TV. Haeba TV e sena dekhoutara, o tla hloka ho reka lebokose la sete-top ea dijithale ebe o hokela tlhahiso ho lona ho eona, le eona ho sete ea TV.
Mokhoa oa ho tseba mocha le ho bala pherimitha ea liforeimi
Naheng ea Russia, lenaneo le amohetsoe, ho latela hore na litora li ntse li hahuoa kamehla. Qetellong ea 2015, sebaka sohle se lokela ho koaheloa ke batho ba pheta-phetang. Webosaeteng ea semmuso http://xn--p1aadc.xn--p1ai/when/ fumana tora e haufi haholo le uena. E bontša maqhubu a khaso le nomoro ea kanale. Pherimitha ea foreimi ea antenna e itšetlehile ka nomoro ea mocha.
Ka mohlala, kanale ea 37 e hasana ka sekhahla sa 602 MHz. Wavelength e nkoa ka tsela e latelang: 300 / 602 u50d 22 cm. Sena e tla ba perimeter ea foreime. Ha re bale kanale e 'ngoe ka tsela e tšoanang. E ke e be mocha oa 482. Hangata 300 MHz, wavelength 482/62 = XNUMX cm.
Kaha lenakana lena le na le liforeimi tse peli, bolelele ba mokhanni bo tlameha ho lekana habeli bolelele ba maqhubu, hammoho le 5 cm khokahano e ngoe le e ngoe:
- bakeng sa mocha oa 37 re nka 105 cm ea terata ea koporo (50 cm * 2 + 5 cm = 105 cm);
- bakeng sa likanale tse 22 o hloka 129 cm (62 cm * 2 + 5 cm = 129 cm).
Mohlomong u thahasella ho sebetsa ka lehong? Tsela ea ho etsa ntlo ea linonyana e ngotsoe mona le ka ho etsa ntlo ea ntja - sehloohong sena.
Seboka
Mohala oa koporo o sebelisoa hamolemo ho tloha mothapong o tla fetela pele ho moamoheli. Ke hore, nka thapo 'me u tlose sheath le braid ho eona, u lokolle mokhanni o bohareng oa bolelele bo lakatsehang. Hlokomela hore u se ke ua e senya.
Ka mor'a moo, re haha tšehetso ho tloha mapolanka, joalokaha ho bontšitsoe setšoantšong. Ho etsa sena, o hloka ho tseba bolelele ba lehlakore la foreimi. Kaha lena ke lisekoere tse khelohileng, re arola sebaka se fumanoeng ka 4:
- bakeng sa mocha 37: 50 cm / 4 = 12,5 cm;
- bakeng sa likanale tse 22: 62 cm / 4 = 15,5 cm.
Sebaka ho tloha ho sepekere se seng ho ea ho se seng se tlameha ho lumellana le litekanyetso tsena. Ho behoa ha terata ea koporo ho qala ka ho le letona, ho tloha bohareng, ho theosa le ho feta lintlheng tsohle. Feela sebakeng seo liforeimi li atamelaneng, u se ke ua khutsufatsa li-conductor. Li lokela ho ba hole (2-4 cm).
Ha pherimitha eohle e behiloe, braid e tsoang ho thapo e bolelele ba lisenthimithara tse 'maloa e sothehile ka bongata ebe e rekisoa (leqeba haeba ho ke ke ha khoneha ho solder) ho ea moeling o fapaneng oa foreimi. Ka mor'a moo, thapo e behoa joalokaha ho bontšitsoe setšoantšong, e e phuthela ka tepi ea motlakase (hangata, empa tsela ea ho beha e ke ke ea fetoloa). Ebe mohala o ea ho decoder (e arohaneng kapa e hahiloeng). Antenna eohle ea ho fana ka matsoho a hau bakeng sa ho amohela thelevishene ea digital e se e loketse.
Mokhoa oa ho etsa antenna bakeng sa thelevishene ea digital ka matsoho a hau - moqapi o mong - o bontšoa video.