| reliability? Hi All
You all know im here in depest sunnyest aftica. I have a project to set up 2 VSATs in the next month. and one customer would like to be able to retransmit the signal accross to their house and possibily the 2nd office.
Im looking at using Deliberant AP/client.
Just what sort of problems whould i expect with a system of say 1 AP and 3 client devces. basicaly im going to be located about 8 hours drive away form the Wireless equipmeent.
So the question realy is how often should i expect to have to go up there and fiddle. or would it be mostly getting the users to cycle the power every now and again.
ive used some of that d-link stuff for a smaller project (1km rad) and it was a collosal pain in the arse...
Im probibly going to by 6 units and pre configure 2 hot spares so that they can try swapping out before i have to take the buss up there.
links will be under 8km (probibly 5km max).
denver maxwell.
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Denver Maxwell (scotsman)Sahelsat.comNiger West Africa |
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nwnPremium
join:2004-03-05
Centerville, IN | I have 2 Deliberant 1300s running as APs. Over 190 days without ever doing anything to them. 1300s and 2300s just work and work for me. Occasionally have a lightning storm the user will have to cycle power. Replaced one after a storm. The only other replacement was when the customer cut a branch that landed on the radio.
Overall, install them and they will work.
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Scott |
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| reply to Denver Max
The only issues we have had with them are related to lightening strikes, overall they seem to be a bit more vulnerable than some of the more expensive gear. They are definately 3-4 steps above D-Link etc.
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CCNA, Comtrain Certified Tower Climber |
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| I believe that was a flash ram issue on the old rev of the zinwell b board. It has since been fixed. Also the b/g board has always been solid for me. I use Demarctech, but same board. |
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 bitoPremium
join:2001-10-08
Atlanta, GA | That is correct. The 2300 (b/g) was built with much stronger tolerances. The solid metal PCB shielding helps too.
Caleb |
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| reply to Denver Max
WE haven't had another lightening surge since losing a big group of 1300s so I can't testify as to the 2300s yet but they do look a bit more resistant.
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CCNA, Comtrain Certified Tower Climber |
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| reply to Denver Max
We have bigggg lightning storms over here.
i dont expect to get through a year without seing some fryd kit, thats why i will be ordering 2x of everything, that and it costs a tone of $$$$ send things over here not including the 3 weeks or so it takes to get here.....
to be honest though $179 CPE is not a problem as long as the VSAT dont get fried!!!!!!!!!!!!!!!!
thanks for the replys
hay Caleb what is your recomendation on lightning protection anyway? cat5e lightning protector?
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Denver Maxwell (scotsman)Sahelsat.comNiger West Africa |
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lutfulPremium
join:2005-06-16
Ottawa, ON Reviews:
 ·TekSavvy DSL
| said by Denver Max:We have bigggg lightning storms over here. Hopefully less than my home country of Bangladesh where lightning kills hundreds of people and thousands of radios every year 
I will not recommend Deliberant gear if you really want to minimize your risk. Use same radio in Demarctech metal enclosure which also has additional CAT5 lightning protection option.
For your VSAT, quarter-wave protectors are available with with 40-60,000 Amp rating. Nextek Lightning is one supplier.
As long as your grounding wire(s) can handle the massive current for 20 microseconds they will even take a direct hit and save the indoor modem. You may still lose the LNB and BUC though. |
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| thaks radialink
yeah i doubt much will survive a direct hit to be honest, the LNB / BUC is about half the cost anyway 
Getting good wire is dam difficult over hear, you just wouldnt beleve it.. and grounding into sand i was thinking about getting an old truck and digging abig whole and dropping it in and wireing it up as the grounding  lol.
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Denver Maxwell (scotsman)Sahelsat.comNiger West Africa |
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| reply to Denver Max
Hi again Radialink
What considerations do people have about the effect or damage caused by the EMP (Electro magnetic pulse) of a direct hit its going to nock out some of this delecate electronics for sure if its close enugh.
We dont get many people killed but these are pretty hefty strikes we have had or PBX phone system blowen to bits as result of a strike on the other side of our centre (about 1km away). had a few big trees explode within 100m of ware i am sitting right now last year... someone tryd to sue us for that? eh there are some crazy people over here.
denver
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Denver Maxwell (scotsman)Sahelsat.comNiger West Africa |
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lutfulPremium
join:2005-06-16
Ottawa, ON Reviews:
·TekSavvy DSL
| reply to Denver Max
said by Denver Max:Getting good wire is dam difficult over hear, you just wouldnt beleve it.. and grounding into sand For dry soil, some suggest a shallow "grounding trench" filled with crushed charcoal.
Thin copper sheet is actually MUCH BETTER than the grounding wire.
Starting with a wide copper sheet, use snipper to cut straight lines 4 inches apart stopping 4 inches of the edge. Now do the same at the opposite edge of the sheet.
Carefully pull the ends and straighten out - you will end up with a "continuous" 2 inch wide copper strap that will carry lots of current. |
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| Charcoal? eh sounds very interesting but why, carbon must conduct very well then  . i can get that on side of the street here. well you learn someting new everyday. im going to look into that as lightning rods are tiny and difficult to find.
if that works could i do 3 trenches and just stick 3 lightning rods into them? or should i do a frayed copper cable of sorts.
thanks denver
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Denver Maxwell (scotsman)Sahelsat.comNiger West Africa |
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lutfulPremium
join:2005-06-16
Ottawa, ON | grounding rod in carbon dust will dissipate current better than grounding rod in sand |
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