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Antene Antene de toate tipurile, pentru internet wireless, satelitare si nu numai...


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Old 14.12.2009, 18:15   #1
kittmask
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Default Antena parabolica internet-wireless 27dbi-2,4Ghz

Aici voi publica materiale despre constructia antenelor de internet wireless.Multe din fotografiile expuse sint preluate dupa internet,si multe sint personale,facute antenelor executate de mine.Din comoditate si din cauza ca nu mai sint in posesia tuturor antenelor fabricate de mine sint nevoit sa preiau fotografiile din alte pagini.Asta ca sa nu mai ma certe XVanish.
.................................................. .................................................. ...
Multi poate nu stiu sau poate nu au avut nevoie de astfel de antene,insa in zona in care locuiesc eu sint foarte folosite.Aceste antene se construiesc cu scopul de a amplifica semnalul emis de modem si captat de placa de retea wifi.Performantele acestor antene sint deosebit de bune si de cele mai multe ori depasesc performantele antenelor din comert.Toate antenele prezentate de mine vor fi ,,antene caseras" adica atene fabricate in casa(de amatori).Nu am sa incep cu cea mai simpla antena facuta dintr-o cutie de conserva si o sirma de 3 cmm,ci voi incepe cu una cu calitati deosebite de o constructie zic eu,simpluta.

Aceasta antena are un cistig teoretic de 30 db dar in practica se pot atinge 33 db in functie de reflector,cabluri,atmosfera,etc.Daca aceasta antena este montata intr-un reflector parabolic poate ajunge la 27 db(probat de mine 100%).Mai multe rezultate pe forumul meu www.profesionalesespana.com
Pentru a proba aceste antene in Wiondows se foloseste un program numit Netstumbler si se gaseste gratuit pe internet.Cei care au fabricat printre primii aceste antene au ajuns la peste 30 Km distanta conexiune modem calculator.Am sa postez multe tipuri de antene si moduri de constructie.......de moment opresc aici pina fac traducerile necesare.
Parabolica din imagine o folosesc in acest moment si este realizare proprie dupa scheme din internet,si am cu ea un cistig de aproximativ 30 db,aveti si o imagine cu netstumbler.Platoul parabolicii este offset,are 65 diametru(partea mare)iar restu este sirma si teava de cupru.
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imag netstumbler



antena interior



interior tuburi



extindere tuburi



dimensiuni antena



est tub

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Last edited by kittmask; 28.03.2012 at 16:51. Reason: ..poza
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Old 17.12.2009, 06:57   #2
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Default Re: Antene internet wireless

Ehh.nu ma pling.Adevarul este ca a meritat investitia.Aproape 8 ani fara sa platesc internet,plus posibilitatea de a ma conecta aproape de oriunde....plus banii care se scot daca lucrezi in asa ceva.Mai vinzi o antena,mai conectezi cite unul,...si cel mai important satisfactia de a vede ca a iesit ceva bun din mina ta.In domeniul antene nu prea mai am necunoscute,si singurul lucru care imi mai ramine de realizat este o parabolica de 2...3m diametru pentru wireless.De fapt nu este chiar parabolica,este construita din teava metalica ...gratar o mai numesc eu.In Spania sa contruit din tevi de fier,numai ca eu vreau sa o fac din aluminiu sau cupru.De preferat din punctul meu de vedere este duraluminiul pentru ca este mai usor si rezistent in acelasi timp.
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Old 19.12.2009, 23:11   #3
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Default Re: Antene internet wireless

Noua mea antena.Creata pentru DX-distante extreme.
Schema initiala



vedere sudura disc

pozitie focalizare strimba

focalizare corecta

corte chapa ordenador

ipw 3945 co discul 6,4cmm-sudura exterioara
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Old 20.12.2009, 20:55   #4
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Default Re: Antene internet wireless

Nu am scos antena afara sa vad cit poate,dar in casa am un cistig de 25 db.Asta inseamna ca 3..4 km poate sa conecteze lejer.Sa vina caldura si incepem testele in aer liber.
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Old 20.12.2009, 21:05   #5
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Default Re: Antene internet wireless

Da, la 25bd reali bagi lejer 4-5 km fara obstacole... cel putin teoretic, la cum vad ca e oala de mare...

Dupa teste sa vii cu noutati ca sunt curios cat duce.
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Old 22.12.2009, 08:37   #6
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Default Re: Antene internet wireless

Quote:
Originally Posted by XVanish View Post
Bravo, nu prea stiu ce indica chartul ala dar oala si discurile arata bestial.

Distanta maxima, viteza de transfer, alte detalii? Sau nu ai apucat sa o testezi inca la potentialul ei maxim?
La ce te referi cind zici chartul?Daca este imaginea aia cu verde,aia este Netstumbler,program pentru windows pentru masurarea puterii in antena wireless.Se gaseste pe net si este gratis.Iti arata ce retele ai pe linga tine,in ce canal emit,cu ce putere,nume SSID,MAC adress-modemuri,tip de criptare retea,etc.
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Old 22.12.2009, 10:00   #7
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Default Re: Antene internet wireless

Da, la acela faceam referire ca nu prea imi dadeam seama ce ne-ai aratat acolo ca indica.
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Old 29.12.2009, 00:21   #8
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Default Re: Antene internet wireless

Mai incearca una simpla.
-Ia o moneda sau orice metalic de 3cm diametru si o tabla sau orice metalic(conserva) de 6cm diametru.Lipeste firul cald la discul mic,moneda,si firul rece la discul mare.Mare atentie sa nu faci scurt intre fire...discuri....dar poti sa le strabati cu un surub prin centru pe ambele si lasi 5..8mm spatiu intre ele.Le pui fata in fata ca in pozele pe care le am mai inainte,cele cu discuri.Eu acum testez cu tub de cupru dar si cu discuri merge excelent
......................
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Old 29.12.2009, 00:30   #9
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Default Re: Antene internet wireless

Eu incerc sa incropesc antenute cat mai mici posibil si cu castig cat mai mare pastrand un raport intre marinea antenei si castig.....ma pregatesc pentru campania de la vara ..........cand am de gand sa schimb antena mare de satelit ...cu una ....mai mare daca se poate si asta care o am acum un 1.8m din fibra sa ramana pe montura ei doar ca trebuie sa o modific sa pot sa ma joc cu ea in plan orizontal iar in focar trebuie sa am ce pune....NU?
Maine ma joc cu ideea lui @kittmask (multumesc!!!)....aia cu moneda sau cercu....mai trebuie sa sap pe zero13wireless ca n-am mai fost pe acolo de mai bine de un an sa vad ce au mai facut baietii.
Si mania mea de a folosi antena Swann ce o foloseam la receptia de TV dar trebuie recalculata la frecventa de 2.4Ghz si daca-si pastreaza randamentul va fi bestiala............vise , vise , vise..
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Old 08.01.2010, 19:36   #10
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

Revenim la dimensiunile primei antene.Elementul activ(LNB)

toate elementele cositorite+cablu
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Old 08.01.2010, 19:38   #11
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

dimensiuni elemente inainte se lipire cablu
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Old 10.01.2010, 10:13   #12
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

Un alt tip de parabolica wireless construita cu un tub si o mica sirma de 3 cmm.


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Old 12.01.2010, 22:36   #13
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

Si acum sa vedem proiectul original de la care am pornit constructia acestei parabolice.








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Old 12.01.2010, 22:50   #14
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

Antena parabolica biquad.










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Old 13.01.2010, 06:20   #15
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

pentru recetia internet trebuie rotita ca radarul.Cit trebuie de lung cablu si de citi ohmi 50 sau 75Nu ai dimensiunile si la biquad
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Old 13.01.2010, 11:24   #16
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

Cablu special de RF de 50 ohmi.Eu am facut si cu cablu de 75 ohmi si a mers bine.
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Old 14.01.2010, 09:20   #17
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

multumesc pentru raspuns
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Old 17.01.2010, 14:05   #18
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

Privind mai atent antena de la postul 3 (i-mi "face tare cu ochiul")....am oservat ceva . Intreb si eu? E bine ce ce am remarcat ?

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Old 17.01.2010, 17:27   #19
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

Hmm... eu nici nu m-am uitat atent, banuiam din start ca e in centimetri... dar oare sa fie in milimetri asa cum e mentionat acolo? M-as mira sa fie asa mici distantele... abia le poti potrivi exact...
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Old 18.01.2010, 09:09   #20
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Default Re: Antena parabolica internet-wireless 27dbi-2,4Ghz

Desenul este copiat asa cum era pe pagina respectiva.Ai vazut bine yky,este greseala de scriere.Spaniolii sint mai analfabeti ca romanii poti fi sigur de asta.
Masura de 0,5 inseamna 5 mm,iar restul sint cm,1,2cm sau 12mm etc.
Dar,ca fapt divers retine ca masurile nu sint neaparat STAS,si pot fi un pic modificate.
Eu personal nu am folosit aceste masuri pentru ca nu sint un copy paste ca astia,ci am recalculat totul in functie de materialul avut.
Rezultatele mele sint net superioare la ale spaniolilor,si mergind pe firul informatiei despre aceasta antena am vazut ca este ruseasca conceptia,iar dimensiunile sint diferite de ce pune in desenul asta,si bineinteles ca si astea merg perfect,dar depind de materiale.
Cind am pus desenele si pozele am gindit ca cei care le vad trebuie sa-si faca o idee despre ce este vorba,si ca imaginatia fiecaruia si cunostintele vor da alte rezultate.
Cind vrei sa faci o antena si vrei date precise,alege un model si eu iti dau masurile in functie de materialul pe care il ai la dispozitie,pentru ca daca nu rezultatele pot fi diferite...nu neaparat rele,poate ies mai bine ca la mine,dar trebuie testat normal..
In plus vei vedea ca din desenul lor,firul cald este lipit undeva mai in interior la discul ,,dipol" numai ca eu nu am facut asa si am rezultate mai bune ca ei...fii atent la poza asta ca se vede ca am lipt firul la exterior...
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