RF Technical Guides

  • Radio History of Chicago : How it Develops Since 1900s?

    Nalane ea seea-le-moea ea Chicago: E Tsoela Pele Joang Ho tloha 1900s?

    Ena ke kakaretso ea nalane ea seea-le-moea sa Chicago, u tla ithuta ho tsoa ho nalane ea AM le FM ea Chicago ho tloha ka bo-1900 ho isa bo-1990. Etela Hona Joale 'me u ithute haholoanyane!

    ka/

    6 / 1 / 22

    434

  • Discone Antenna 101 - All Your Concerns Answered in One Area

    Discone Antenna 101 - Matšoenyeho 'ohle a hau a arajoa sebakeng se le seng

    Nahana hore na ke eng e u thusang ho lekola sephethephethe sa sebaka sa marang-rang kapa liteishene tsa ho lata ka katleho? Ke Antenna ea Discone. Hajoale, ha u nahana hore u ka tlase, re nahana hore ha u na leseli mabapi le lenakana lena.

    ka/

    5 / 11 / 22

    365

  • How To Bond Ground Rods With Exothermic Welding?

    Mokhoa oa ho tlama lithupa tsa fatše ka li-welding tse makatsang?

    Sengoliloeng sena, ke tla u bontša mokhoa oa ho sebelisa CADweld uni-shot ho tlama lipalo tsa hau tsa fatše ka mokhoa o makatsang. Mokhoa ona oa ho kopanya lithapo tsa fatše ho lithupa tsa hau tsa fatše, o qoba mafome, hape le lihokelo tse phahameng tsa ho hanyetsa lithupa tsa hau tsa fatše. 

    by/ Bond Ground Rods With Exothermic Welding

    4 / 25 / 22

    296

  • How to Build a Turnstile Antenna for Satellite Communication

    Mokhoa oa ho Haha Antenna e Phetlang bakeng sa Puisano ea Satellite

    Mona ke merero ea kaho le ea kaho ea lenakana la Turnstile leo ke le sebelisang bakeng sa puisano ea sebaka ka har'a sehlopha sa seea-le-moea sa batho ba sa rutehang sa limithara tse 2.

    by/ Haha Lenakana le Phetlang bakeng sa Puisano ka Sathelaete

    4 / 25 / 22

    448

  • CB Radio vs HAM vs Walkie Talkie vs GMRS

    CB Radio vs HAM vs Walkie Talkie vs GMRS

    E lumelle hore e be CB Radios, HAMS, Walkie talkies, kapa GMRS, ke likhetho tse ntle bakeng sa mehala. Na u batla ho lula u hokahane le ba lelapa la hau le metsoalle ha opareitara e sa u lefelle litšenyehelo? Hantle, tsena ke lintho tseo u lokelang ho li khetha.

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    4 / 25 / 22

    464

  • How To Build A 2 Meter Vertical Antenna?

    Mokhoa oa ho aha Antenna e otlolohileng ea limithara tse 2?

    Haeba antenna ea khale e otlolohileng e ne e lahlehetsoe ke li-radial hape e sa khone ho otla li-radial tse ngata tse sa sebetseng ho potoloha, ka sebele u tla hloka ho theha antenna ea 2 meter 1/4 wave vertical antenna bakeng sa 146 mHz. sehlopha sa radio sa masene. 'Me tataiso ke ena bakeng sa hau.

    ka/ mokgoa wa ho aha lenakana le emeng

    4 / 25 / 22

    382

  • How To Build A 2 Meter Antenna For Bicycle Mobile?

    Mokhoa oa ho Aha Antenna ea Limithara tse 2 Bakeng sa Mohala oa Baesekele?

    Mohlomong bothata bo boholo ka ho palama baesekele ea HT ke ho nahana ka antenna e loketseng baesekeleng ea hau. Sena ke hobane baesekele ha e fane ka sefofane se seholo sa fatše. Mona ke merero ea antenna eo a e hlalositseng posong.

    by/ Ho aha Lenakana bakeng sa Baesekele Mobile

    4 / 24 / 22

    441

  • How To Construct a J-Pole Antenna for the 70cm Ham Band

    Mokhoa oa ho theha Antenna ea J-Pole bakeng sa 70cm Ham Band

    Mona ke lenakana la J-pole le theko e boima haholo leo ho leng bonolo ho le aha. Mabapi le nako ea lihora, hammoho le thepa ea boleng ba $10, o ka ba le lenakana la j-pole le sebetsang hantle haholo.

    ka/ Ho etsa Antenna ea J-pole bakeng sa Ham Radio

    4 / 24 / 22

    409

  • Develop a Phasing Harness for Piling Antennas

    Theha Sebopo sa Phasing bakeng sa Li-antennas tse ntseng li eketseha

    Morao tjena, mosebetsing, ke ne ke e-na le monyetla (kapa tlhokahalo) ea ho etsa marang-rang bakeng sa antenna ea li-bay tse peli. Leha ho le joalo, ke ne ke e-na le bothata. Ke fumane marang-rang lilemo tse 'maloa morao hantle hore na nka etsa sena joang bakeng sa boemo ba ka ba antenna, kajeno sebaka sa marang-rang se ne se felile! Kahoo ke ile ka tlameha ho itlhahloba ke le mong. Kamora lihora tse ngata tsa ho sheba lintlha tsa ka (tse futsanehileng haholo), ke ile ka li utloisisa.

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    4 / 22 / 22

    373

  • Just How to DIY an NVIS Antenna AKA Cloud Burner Antenna Utilizing a Mag Mount

    Mokhoa oa ho etsa Antenna ea NVIS AKA Cloud Burner Antenna U sebelisa Thaba ea Mag

    Karolo ea ho ba mokhanni oa seea-le-moea sa ham ke ho fana ka lipuisano nakong ea maemo a tšohanyetso. Ka Letsatsi la Antenna la Ohio NVIS le tlang, ke ile ka khetha ho sheba li-antenna tsa NVIS. Li-antenna tsa NVIS, tse boetseng li bitsoang Near Event Vertical Skywave li-antenna li na le mahlaseli a phahameng haholo. Ho hong ka tatellano ea likhato tse 60, ho ea ho likhato tse 90 ka kotloloho. Ho fapana le mats'oao a UHF le VHF, ao hangata a nang le sebaka sa lik'hilomithara tse 50 le antenna ea yagi holimo, 'me lenaka la NVIS le etselitsoe ho sebelisana ka mefuta e fapaneng ea 75-- 500-mile. Ka linako tse ling antenna ea NVIS e bitsoa "heater ea maru" kaha e tsamaisa mahlaseli a eona a mangata holimo ho feta lenakana le tloaelehileng.

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    4 / 22 / 22

    374

  • Do It Yourself Your Own Equipment Shelf with an Absence Table - LackRack

    Iketsetse Shelf ea Hao ea Thepa e nang le Tafole ea ho ba Sieo - LackRack

    Haufinyane tjena ke ne ke hloka rack ea lisebelisoa tsa 19 ″. Empa kaha ke ne ke le theko e tlaase, ke ile ka etsa qeto ea ho e haha. Ha ke ntse ke batla Marang-rang, ke ile ka fumana seo ho thoeng ke LackRack, e sebelisang Letlapa la IKEA's Lack Table. Leha ho le joalo ho bala ho tsoelang pele ho ile ha senola lintho tse 'maloa tseo ke neng ke nahana hore li haella moralong oa mantlha oa LackRack.

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    4 / 22 / 22

    334

  • Just How to Mount Devices into a 19 Inch Shelf

    Mokhoa oa ho kenya lisebelisoa ka har'a Shelf ea 19 inch

    Ho tloha hoo e batlang e le lisebelisoa tsohle tsa 19 '' sebelisa li-screws tse 10-32 liporong tsa tsona tse ka mahlakoreng, fumana tse peli tsa tsona 'me u behe linate tse peli tsa 10-32 holim'a screw,' me u li kopanye hammoho. Ebe u koala ntho eohle ka vise.

    ka/

    4 / 21 / 22

    572

  • How to DIY a Shortened 20 thru 40 Meter Vertical for POTA

    Mokhoa oa ho etsa DIY e khutsufalitsoeng ho tloha ho 20 ho isa ho 40 Meter Vertical bakeng sa POTA

    Ho na le ho hong ho khahlisang mabapi le ho kenya tšebetsong POTA moo o kenang ka lisebelisoa tsohle tsa hau ka har'a sephutheloana hape o qalisa serapa se sebelisang matla a QRP.

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    4 / 21 / 22

    400

  • How to Build a DIY 2 Meter J-pole Antenna

    Mokhoa oa ho Haha DIY 2 Meter J-pole Antenna

    Haeba u batla antenna e theko e tlase, hape e bonolo ea ho aha antenna, antenna ea J-pole e ntle haholo! Hoo e ka bang nako ea lihora, hammoho le lihlahisoa tsa boleng ba $ 15, u ka ba le antenna ea j-pole e sebetsang hantle haholo.

    by/ DIY J polekana

    4 / 20 / 22

    570

  • What is Broadcasting and How it Works? - FMUSER

    Broadcasting ke Eng 'me E Sebetsa Joang? - FMUSER

    Khaso ke eng, 'me ke hobane'ng ha u lokela ho tsotella? Tataiso e felletseng mabapi le khaso e tsoang ho FMUSER ke ena, ho kenyeletsoa hore na ke eng le hore na e sebetsa joang. Tsoela pele ho hlahloba!

    ka/

    2 / 28 / 22

    671

  • A Brief Intro to Broadcast Production Technology - FMUSER

    Kenyelletso e Khutšoanyane ea Theknoloji ea Tlhahiso ea Phatlalatso - FMUSER

    Theknoloji ea tlhahiso ea khaso ke eng, 'me ke hobane'ng ha u lokela ho tsotella? Mona ke lintlha tse felletseng mabapi le hore na theknoloji ea tlhahiso ea phatlalatso ke eng le mefuta e meng ea eona ea mantlha. Tsoela pele ho hlahloba!

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    4 / 6 / 22

    565

  • Complete Radio Station Equipment Package You Should Have for FM Broadcasting

    Tlatsa Sephutheloana sa Thepa ea Seteishene sa seea-le-moea seo U Lokelang ho ba le Ho sona bakeng sa Khaso ea FM

    Ke mefuta e mekae ea thepa ea khaso e teng setsing sa seea-le-moea se felletseng, 'me lisebelisoa tsee tsa khaso li sebetsa 'moho joang. Ke hokae moo u ka rekang lisebelisoa tseo tsa litsebi tsa khaso? Leqephe lena le tla araba lipotso tsena.

    ka/ Thepa e felletseng ya kgaso ya FM

    7 / 27 / 22

    728

  • RF Filter in Radio Broadcasting

    Sefe ea RF ho Phatlalatso ea Radio

    Puisanong ea seea-le-moea, sefahla sa RF ke sesebelisoa sa bohlokoa haholo sa elektroniki. Phetisong ea mats'oao a seea-le-moea, ho tla lula ho na le lihlopha tseo re sa li hlokeng, joalo ka mats'oao a mashano a sa hlokahaleng; kapa mohlomong ka mabaka a itseng a khethehileng, ha re hloke mefuta e itseng ea maqhubu a maqhubu a seea-le-moea. Ka nako ena, re hloka ho sefa li-frequency tse sa batleheng ka li-filters tsa RF. Joale ke mofuta ofe oa lisebelisoa tsa elektroniki Sefahla sa RF hona ke hobane’ng ha e le bohlokoa hakaale? Karolelano ena ke ho araba potso ena.

    by/ Sefe ya RF ke eng

    7 / 29 / 22

    1130

  • DIY an FM Radio Dipole Antenna | FMUSER BROADCAST

    DIY an FM Radio Dipole Antenna | TŠEBELETSO EA FMUSER

    FM dipole antenna ke mofuta o bonolo le o pharalletseng ka ho fetesisa oa antenna, ka hona, ho bonolo hore mang kapa mang a iketsetse ea hae, e hlokang lisebelisoa tse bonolo feela. antenna ea DIY FM dipole ke khetho e sebetsang le e theko e tlase haeba seea-le-moea sa hau se hloka lenakana la nakoana. Joale u ka etsa antenna ea DIY joang ea FM? Sehlooho se tla u bolella.

    by/ Lenaka la FM DIY

    5 / 11 / 22

    1609

  • How to Find the Unused Frequency for FM Radio Transmitters?

    Mokhoa oa ho fumana maqhubu a sa sebelisoeng bakeng sa li-FM Radio Transmitters?

    Li-transmitters tsa seea-le-moea tsa FM ke e 'ngoe ea litsela tse bonolo le tse theko e tlaase tsa ho mamela 'mino oa sesebelisoa sa hau sa mohala. Empa bakeng sa rookie, ho ka ba thata hanyane ho fumana maqhubu a se nang tšitiso. Haeba u na le bothata ba ho fumana maqhubu a FM a sa sebelisoeng, kabelo ena e tla u tsoela molemo.

    ka/ Fumana Maqhubu a FM a sa Sebedisweng

    9 / 21 / 21

    2541

  • How to Make a Printed Circuit Borad? | PCB Manufacturing Process

    Mokhoa oa ho etsa Borad ea Potoloho e hatisitsoeng? | Ts'ebetso ea Tlhahiso ea PCB

    PCB, e tsejoang hape e le boto ea potoloho e hatisitsoeng, e entsoe ka lisebelisoa tse fapaneng tse sa sebetseng bakeng sa ts'ehetso ea 'mele le khokahano ea likarolo tsa sokete tse kentsoeng holim'a metsi. Empa mosebetsi oa boto ea potoloho e hatisitsoeng ke ofe? Boto ea potoloho e hatisitsoeng e etsoa joang? Bala litaba tse latelang bakeng sa lintlha tse ling tsa bohlokoa.

    ka/ Mokhoa oa ho etsa Boto ea PCB

    10 / 29 / 21

    1344

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