Re: [Karlnet] Heat Problems Continued

[Bryan <blsutton@airnetwifi.net>]

I'm preparing to buy these - if the temps you reported are in 
farenheight, they won't work for me....
If in celsius I'll be ok.
For my info, since I've not purchased yet & don't know what they report 
in, is that F or C ?

Bryan

Michael McDermott wrote:

> I'm aware the KN-100 boards could/do have possible heat problems, but 
> apparently "the heat issue is resolved".
>
> Yesterday, a customer reported that 5 of his KN-100 boards failed due 
> to heat. Yesterday the temperature had only reached 35 degrees.
>
> 4 of the units were equipped with senao 200mw cards (with heat sinks) 
> in Demarc outdoor enclosures. Ethernet cable lengths were 10-15 meters 
> and 12V1A power supplies where used. Also the customer was using 
> latest revision of the firmware (4.44).
>
> 1 of the units was equipped with a 30mw (Orinoco) card in Demarc 
> outdoor enclosure, Ethernet cable length was 10-15 meters and 12V1A 
> power supply. This one also failed in this heat.
>
> All of these units failed with an on board temperature of about 59 
> degrees, but the customer also reported that the some of other units 
> did not fail had on board temperatures of 64 degrees. Why do some 
> units fail with an on board temperature at around 59 degrees and 
> others do not?
>
> This customer is pro-active as he is using lower voltage power 
> supplies and has applied heat sinks to the cards. What else can we do 
> to solve this problem without the use of fans?
>
> What is Karlnet doing to resolve these problems?
>
> Thanks.
>
> Michael R McDermott BEng (Comp. Eng.), MACS, IEEE
> Pre-Sales Technical Consultant
> Veritech Australia Pty Ltd
> _______________________________________________
> Karlnet mailing list
> Karlnet@WISPNotes.com
> http://lists.wispnotes.com/mailman/listinfo/karlnet


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