[Soekris] Solid state capacitors

[Ryan Langseth]

I can attest to the temperature range Soekris boards can handle. We have
Soekris based Access Points throughout the Red River Valley (border
between North Dakota and Minnesota). Just today, we were on top of a
Grain Elevator replacing a PTP link between two of our access points
( the ptp link was not soekris). The temp was -15 F (-26 C), with 20-30
mph winds, and the APs were working fine.  Many of our APs have been up
for over 3 years, some probably over 5 years.

Coverage map: http://www.invisimax.com/coveragemap.html
Each one of those circles has at least one Soekris board and at least 50
feet up a tower/elevator/church/


Ryan 


On Thu, 2007-01-11 at 18:44 +0100, Mats Lundqvist wrote:
> Wow, not bad :)
> 
> Thank you for your information.
> 
> 2007/1/11, Soren Kristensen <soren at soekris.com>:
>         Hi Mats,
>         
>         Mats Lundqvist wrote:
>         > Hello
>         >
>         > Does Soekris plan on offering a product using solid state
>         capacitors
>         > instead of electrolytic capacitors (did I spell it right?).
>         >
>         > I have a lot of interest in deploying a soekris in an
>         environment that's 
>         > below freezing point, now I have one that's about to be
>         deployed, but
>         > uses a heating circuit inside the casing to warm things up
>         when the
>         > Swedish winter weather sets in...
>         >
>         > I imagine the rest of the circuits on the board would do
>         just fine in 
>         > cold weather since they are all solid state.
>         
>         If you actually checked the specifications for electrolytic
>         capacitors
>         you would have noticed that they're all specified to work a
>         low
>         temperatures, you just need to take into account the
>         temperature 
>         dependence on their performance.
>         
>         Which we have done, so although our boards are not specified
>         to operate
>         below zero, as we can't get all parts specified for that,
>         they're
>         otherwise designed to. And a lot of customer use them like
>         that without 
>         problems, you can usually expect our boards to work down to
>         about -30 degC.
>         
>         
>         Best Regards,
>         
>         
>         Soren Kristensen
> 
> 
> 
> -- 
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-- 
Ryan Langseth
Systems Administrator
ryanl at invisimax.com