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Old 07-11-2009, 09:34   #5981 (permalink)
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Le comanzi, asta e. Oricum mi se pare afacere buna in locuri unde e imposibil de tras fibra. Faceau unii de prin cehia-polonia niste FSO-uri pe 10Mbps, am vrut sa incerc da am abandonat.
rujan se cheama... am gasit ceva documentatie de constructie dar 10 Mbps nu prea imi ajung.
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Old 07-11-2009, 11:44   #5982 (permalink)
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avem noi echipamente in 26ghz (cica ii libera banda), dar un link de 684mbps ajunge pe la 6000 eur pm if interested
 
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Old 07-11-2009, 11:52   #5983 (permalink)
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avem noi echipamente in 26ghz (cica ii libera banda), dar un link de 684mbps ajunge pe la 6000 eur pm if interested
scump al naibii, la banii astia prefer fibra... astea ar fi bune daca as de niste net pe luna dar pana acolo inca nu am ajuns )
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Old 07-11-2009, 13:05   #5984 (permalink)
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rujan se cheama... am gasit ceva documentatie de constructie dar 10 Mbps nu prea imi ajung.
Un link FSO de 100Mbps costa cam 3000Euro.
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Old 07-11-2009, 16:34   #5985 (permalink)
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rujan se cheama... am gasit ceva documentatie de constructie dar 10 Mbps nu prea imi ajung.
ronja
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Old 09-11-2009, 10:29   #5986 (permalink)
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ronja, scuze...
oricum 1,4 km e descul de putin dar in conditii de amator e un proiect f. interesant.
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Old 09-11-2009, 15:05   #5987 (permalink)
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care a incercat sa dea Voip pe wirelles? ma gindeam pe mikrotik pe 5 ghz ; cineva de la rds zicea ca nu merge , ca pe alvarion in 3,5 gh, se auzea pocniturile de la traficul de net pe fundal ! pareri , va rog!
 
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Old 09-11-2009, 15:27   #5988 (permalink)
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Un link FSO de 100Mbps costa cam 3000Euro.
Si ce faci cu FSO cand e ceata
 
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Old 09-11-2009, 15:34   #5989 (permalink)
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daca folosesti echipamente serioase iti spun ca nu o sa ai nici o problema.si asta ptr ca voipu consuma maxim 80-84kbps chiar daca se transmite si fax.Eu dau voip de cand a aparut pe la noi rb133+r52 in 5GHz si cu alea am ramas pe link ...pe acelasi link vine si internetul si nu am avut nici o reclamatie pana acum.
 
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Old 09-11-2009, 15:36   #5990 (permalink)
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Si ce faci cu FSO cand e ceata
Ai incercat tu si ai avut probleme?
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Old 09-11-2009, 15:39   #5991 (permalink)
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Ai incercat tu si ai avut probleme?
Nu dar m-am documentat pe tema asta, daca FSO nu depindea de conditiile meteo si in special ceata ar fi fost mai utilizat.
 
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Old 09-11-2009, 16:00   #5992 (permalink)
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Pentru ca Linkurile FSO se fac custom pentru fiecare caz in parte (distanta, conditii meteo, etc), nu merge metoda romaneasca "lasa ca merge asa"...
Am vazut ca unele firme ofera la linkuri FSO si backup radio. Vorbeste cu un reprezentant si o sa te lamureasca.
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Old 10-11-2009, 09:04   #5993 (permalink)
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Parerea mea e ca FSO e bun acolo unde nu poti pune fibra, costul ridicat al unui link FSO profi nu se justifica decat in cazuri extraordinare, plus ca distantele pe care opereaza sunt destul de mici. La pretul actual al fibrei nu merita investitia. oricum, FSO e interesant dar pentru telecomunicatii civile (mai ales in RO) nu se justifica pretul.
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Old 11-11-2009, 15:59   #5994 (permalink)
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am auzit ca daca antenele de la capetele unei coenxiuni wireless p2p sunt polarizate diferit e mai bine
e adevarat?
 
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Old 11-11-2009, 18:01   #5995 (permalink)
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Cea mai mare timpenie care am auzit-o pina acum.
Trebuie sa aibe aceeasi polarizare amindoua
 
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Old 11-11-2009, 19:27   #5996 (permalink)
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am auzit ca daca antenele de la capetele unei coenxiuni wireless p2p sunt polarizate diferit e mai bine
e adevarat?
Hahaha. Cum ai ajuns tu la concluzia asta?
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Old 11-11-2009, 21:35   #5997 (permalink)
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am auzit ca daca antenele de la capetele unei coenxiuni wireless p2p sunt polarizate diferit e mai bine
e adevarat?
Fii foarte sigur ca linkul ala NU va mai functiona, sau va functiona extrem de rau...
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Old 11-11-2009, 22:16   #5998 (permalink)
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intre un grid polarizat vertical si un offset polarizat circular nu era nici o diferenta dupa ce am schimbat gridul cu inca un offset...ciudat, citisem ca intre circular si vertical/orizuontal ar fi 3-6dBi diferenta
 
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Old 12-11-2009, 08:54   #5999 (permalink)
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intre un grid polarizat vertical si un offset polarizat circular nu era nici o diferenta dupa ce am schimbat gridul cu inca un offset...ciudat, citisem ca intre circular si vertical/orizuontal ar fi 3-6dBi diferenta
Fenomenul asta cu polarizarea circulara l-am observat si eu... am facut un feed helix pentru un offset mai demult si exact ca si tine nu vedeam nici o diferenta intre un feed polarizat vertical si helix..
Interesant la polarizarea circulara e ca pe vreme naspa pare sa se comporte mai bine decat un feed cu pol. H sau V si alta chestie faina e ca am un raport semnal/zgomot mai bun pe circular(poate asta e smecheria... creste raportul semnal/zgomot pentru ca nu prea transmite nimeni pe polarizare circulara).
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Old 13-11-2009, 20:13   #6000 (permalink)
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distantza o avetzi in poza. Amandoua sculele prinse cu fasete in cate o oala de 1.5m
pe langa mikrotik n, these things rock...
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