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 Subject :Temperature Extremes.. 2013-02-23- 04:26:59 
K6AH
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Joined: 2012-03-05- 10:47:45
Posts: 181
Location: San Diego, CA

Due to the area's geography we will be forced to locate nodes in places where the temperature gets in the 20's and often snows in the winter.

Has anyone had experience in this area who can give us advice on suitable enclosure techniques.  The nodes are envisioned to be battery/solar powered, so temperature control might be a relatively complicated solution. 

Andre, K6AH
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 Subject :Re:Temperature Extremes.. 2013-02-23- 16:51:11 
AD7QF
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Joined: 2012-04-16- 05:51:12
Posts: 23
Location: 
I have had two nodes mounted on a tower since November. One is in a weather tight plastic box and the other is inside an indoor metal box wrapped with a zip lock freezer bag. Temperatures so far this winter have gone sub teen's on us and the two units continue to work. Though I have observed that they seem to reset from time to time. That has not been figured out. But they have been able to be accesed through an indoor node during this winter weather. Our elevation is around 4000 feet. As for snow, they have not been bothered by it. Just today six inches fell from about 9:30 am to 4:00 pm. That is my personal experience this winter with my own equipment. At an elevation above 9000 feet are three nodes that are providing coverage and seem to not fail due to weather. I am not sure how they are housed, but two of them have been very reliable. Does this help? Gerald, AD7QF
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 Subject :Re:Temperature Extremes.. 2013-02-24- 05:31:18 
K6AH
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Joined: 2012-03-05- 10:47:45
Posts: 181
Location: San Diego, CA
Yes, thanks Gerald. That's the sort of evidence I'm looking for. You never know about consumer-grade equipment... and I suppose it may vary widely from device to device. San Diego isn't generally known for it's cold weather, but to cover the broader county they'll need to survive the 5,000'-6,000' mountain environment that runs along its east side. Thanks for the response. Andre, K6AH
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 Subject :Re:Temperature Extremes.. 2013-02-26- 05:39:29 
AD7QF
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Joined: 2012-04-16- 05:51:12
Posts: 23
Location: 
You are absolutly correct about consumer grade equipment. But I think that proper housing can overcome most of that defincincy. You are more likly to find issues with heat tempetures then cold. About April, when I can get back on my roof, I need to redo my setup to provide cooling for the summer months. During this winter, those days with sunshine help to heat the interior. Besides extreme tempertures there is condensation to consider. Gerald AD7QF
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