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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 19.03.2004 - 13:52 #6815
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Basic
Joined: Feb 11, 2004
Posts: 157
Location: okr. HC a PN
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mgx - to podla teba je lepsie dat na parabolu SQUAD? |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 19.03.2004 - 17:48 #6823
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Guru
Joined: Dec 27, 2002
Posts: 1505
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no, to by asi velmi nefungovalo ale pochybujem, ze budes parabolu montovat u klientov oproti vsesmerovke |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 19.03.2004 - 18:26 #6824
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Ucen
Joined: Aug 20, 2003
Posts: 598
Location: Zvolen
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na parabolu mozes namontovat aj stoceny medeny drot - videl som aj take riesenie |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 22.03.2004 - 08:12 #6892
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Basic
Joined: Feb 11, 2004
Posts: 157
Location: okr. HC a PN
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Skusal som dat na parabolu okrem plechovice Quad,Trell.AP mal vsesmerovku strbinovu a bol asi 3km.Spojenie sa podarilo so vsetkym.A ten stoceny medenny drot je niekde na nete?(obr,navod,atd..)
vdaka cavte! |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 22.03.2004 - 08:21 #6893
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Ucen
Joined: Aug 20, 2003
Posts: 598
Location: Zvolen
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 25.03.2004 - 22:07 #6992
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Basic
Joined: Nov 28, 2003
Posts: 30
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Dostatocne velka parabola ti pozbiera tolko signalu, ze v jej ohnisku musich chytit zignal aj na "mokry spagat"
Sanco |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 25.03.2004 - 22:23 #6993
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Basic
Joined: Nov 28, 2003
Posts: 30
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Ja by som pouzitie home made anten zhrnul asi takto:
1. u klienta na kratke vzdialenosti biquad (alebo plechovka)
pasmo zasieraju obidve ale nastastie na relativne kratku vzdialenost.
2. smerove spoje - parabola s oziarovacom z plechovky.
Velkost paraboly podla vzdialenosti - aby ste to zbytocne neprehulovali.
Parabola je podla mna dostatocne smerova na to aby sa niekto rozculoval nad zbytocnym vyzarovanim do okolia.
3. APcka - sektorove sterbinovky. (Nic nezasiera pasmo viac ako vsesmerovka, bez ohladu na to ci je home made alebo origos).
Ale radim v tom comu nerozumiem pretoze pouzivam 24dB sito CSat |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 25.03.2004 - 23:27 #6995
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Ucen
Joined: Aug 20, 2003
Posts: 598
Location: Zvolen
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nie je to dobre riesenie!!! ich ulol vyzarovaci je 40 stupnov ak nie viac. hrozne zarusia prostredie. preto odporucam montovat na ne tie kridelka co spravil Trevor Marshal. Myslim ze tak sa volal. videl som aj vsesmerovky quady. hrozne musia rusit. posledne co by som spravil. iba ak v cistom prostredi. Ked tak s kridelkami, vtedy sa to da obmedyit na 20? stupnov pri troche stastia. ten moj quad ma zaber cez 60 stupnov. uplne je to na <>. |
Last edited by popo on 26.03.2004 - 07:44; edited 1 time in total
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 29.09.2005 - 13:33 #23457
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Basic
Joined: Okt 22, 2004
Posts: 71
Location: snv
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http://mujweb.cz/www/aantena/
Co poviete na antenu TRELL - dvojce s vysokym vykonom az 22dB.
Aky moze mat vyzarovaci uhol? A je dobre ju pouzit v zarusenom pasme? |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 29.09.2005 - 13:39 #23461
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Majster
Joined: Jan 12, 2003
Posts: 4250
Location: /dev/null
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KiLLER wrote: ›
A je dobre ju pouzit v zarusenom pasme?
iste dobre vies ze pouzivat homemade anteny nie je dobre ani v cistom pasme a hlavne ti to ani nepovoluju telekomunikacne normy. |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 29.09.2005 - 17:29 #23471
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Basic
Joined: Okt 22, 2004
Posts: 71
Location: snv
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to viem velmi dobre... |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 29.09.2005 - 18:38 #23472
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Basic
Joined: Sep 22, 2005
Posts: 71
Location: Europa
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 30.09.2005 - 15:42 #23486
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Basic
Joined: Feb 11, 2004
Posts: 157
Location: okr. HC a PN
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Podla simulacie ma Trell max. 15dB teoretickych. V praxi to islo zhruba ako plechovka...
Samozrejme ze ich nepouzivam!!! |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 09.10.2005 - 00:44 #23757
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Ucen
Joined: Sep 06, 2004
Posts: 684
Location: hranica s ukrajinou...
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chcel by som sa spytat ci by niekto nemal nejaky napad ako upravit tuto antenu?
nepotrebujem plnych 180°, ci by nejakym tienenim za antenou by sa zvysil zisk?
http://www.wificentrum.sk/buxus/generat ... amp;lng=sk
a co by ste povedali na tuto antenu?
JOY Line Wifi Antenna SECTOR 120 21dB
nemate onej viac info? |
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Post subject: RE: kolko dB ma "plechovkova" antena ?
Posted: 09.01.2012 - 00:56 #95834
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Majster
Joined: Feb 14, 2011
Posts: 2544
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