Re: [WISPA] [Wisp] solar site

2009-08-25 Thread Marlon K. Schafer
H.  Note to self.  Build good mounts, but make them so that they 
collapse in high winds instead of breaking.

Thanks for the tip Bill!
marlon

- Original Message - 
From: Bill Prince part...@skylinebroadbandservice.com
To: Principal WISPA Member List w...@wispa.org
Cc: 'WISPA General List' wireless@wispa.org; 
isp-wirel...@isp-wireless.com
Sent: Tuesday, August 25, 2009 8:21 AM
Subject: Re: [Wisp] [WISPA] solar site


 IMO 24 hours is not enough reserve.  In our area, we have many occasions
 when there is not enough sun for several days running.  I would plan on
 at least 100 hours reserve; more if you are more conservative.

 Another issue is storm damage.  Two years ago we lost the panels on a
 solar-powered site because of hurricane-force winds.  One of the panels
 only flew about 100 feet from the tower, and was not damaged
 electrically.  The other panel went 200 yards, and was damaged pretty
 badly.  We put the surviving panel back up in 3 days (we had to build a
 new mount, as the old one was completely destroyed).  Still, the site
 never went down because we built a week reserve into the batteries.

 We emergency-ordered a replacement panel, and got it less than a week
 later.  We were able to operate on that one panel for the intervening
 time.  We weren't completely charging the batteries, but there was
 enough reserve to limp along for the time we were down one panel.

 YMMV


 Bill Prince
 Skyline Broadband Service
 (a division of Coastal Sierra)
 650-917-9279



 Scott Parsons wrote:
 Hi Marlon, Long time...

 Voltage 12V
 Power Consumption: MT 4 watts, 2 Radio cards 8 watts
 Total= 12 watts @ 12V

 We have a handy calculator at
 http://tyconpower.com/learning_center/learning_center.htm

 I've attached the results. I used 4 hours of sun for your location based 
 on
 another post I saw.
 I used 24 hours extra battery capacity. You may want to increase or 
 decrease
 this depending on the reliability of the sun in your area.

 You need 73 watts minimum solar panel capacity
 You need at least 88 Ah in battery capacity

 This is bigger than the stuff we offer right now but here's a starting 
 list:

 1. 85W solar panel - You should be able to get for about $350 or less

 2. 12V 8A Solar Controller - You should be able to get for $60 or less

 3. 100Ah battery - You don't need a deep discharge type because the solar
 controller will disconnect the load when the battery voltage reaches 
 11.1V
 which protects the battery from over discharge. You just need a type that
 has good performance in cold weather. You should be able to pick up a
 battery for less than $200

 4. You'll need a mount for the solar panels try here:
 http://power-fab.com/products.htm They make all kinds of mounts. I'm not
 sure the cost.

 5. You'll need a vented outdoor enclosure if you are putting the battery
 inside. I've seen people put the battery in one of those plastic battery
 cases you see in small power boats and then the enclosure requirements 
 for
 the controller and electronics becomes easy. We have suitable enclosures 
 for
 $70 14x10x5 Polycarbonate outdoor enclosure

 6. Wiring is quite simple.

 Any decent vendor will warranty the panels for 20-25 years and the solar
 controller for 1 year.

 Regards,
 Scott


 -Original Message-
 From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
 Behalf Of Marlon K. Schafer
 Sent: Monday, August 24, 2009 10:10 PM
 To: WISPA General List
 Cc: Principal WISPA Member List; isp-wirel...@isp-wireless.com
 Subject: [WISPA] solar site

 Hi All,

 Sorry for the cross post.  Time is short on this project and I need a lot 
 of

 help.

 I've never done a solar project.  Never really even looked at them due to
 the costs I've seen tossed about.

 Now I have a customer that's willing to purchase the initial equipment
 needed to cover his community.  The ONLY way into the area is a hill 
 that's
 within sight of my tower and NOT anywhere near power.

 I'll be able to just run a single MT board with two radios in it for this
 site.  One backhaul and 1 distribution.  I'll guess that I'll have less 
 than

 a 2 amp draw (probably much less than 1 amp in reality).

 We don't often get long periods of no sun.  Could be days of fog or low
 clouds in the winter, but mostly we'll have a lot of sun.  On the foggy 
 or
 cloudy days we often don't have enough wind to worry about wind 
 generation.
 I think.

 So, please clue me in on what to buy, who to buy it from (vendors 
 welcome!)
 and anything else I'm missing.

 Thanks all!
 marlon



 
 
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Re: [WISPA] [Wisp] solar site

2009-08-25 Thread Scott Parsons
Yeah, We don't have the higher capacity yet. For instance our largest panel
is 30W right now and our largest controller is 5A. You could use 3 30W
panels and 2 5A controllers but I wouldn't suggest that because it's too
costly.
Next year will be a different story :-)

Regards,
Scott


-Original Message-
From: wisp-boun...@wispa.org [mailto:wisp-boun...@wispa.org] On Behalf Of
Marlon K. Schafer
Sent: Tuesday, August 25, 2009 10:23 AM
To: WISPA General List
Cc: 'Principal WISPA Member List'; isp-wirel...@isp-wireless.com
Subject: Re: [Wisp] [WISPA] solar site

Thanks for all of the advice Scott!

Do I understand correctly that you can NOT sell this to me because you 
specialize in even smaller systems?

thanks again,
marlon

- Original Message - 
From: Scott Parsons sc...@e-zy.net
To: 'WISPA General List' wireless@wispa.org
Cc: 'Principal WISPA Member List' w...@wispa.org; 
isp-wirel...@isp-wireless.com
Sent: Tuesday, August 25, 2009 7:44 AM
Subject: Re: [WISPA] solar site


 Hi Marlon, Long time...

 Voltage 12V
 Power Consumption: MT 4 watts, 2 Radio cards 8 watts
 Total= 12 watts @ 12V

 We have a handy calculator at
 http://tyconpower.com/learning_center/learning_center.htm

 I've attached the results. I used 4 hours of sun for your location based 
 on
 another post I saw.
 I used 24 hours extra battery capacity. You may want to increase or 
 decrease
 this depending on the reliability of the sun in your area.

 You need 73 watts minimum solar panel capacity
 You need at least 88 Ah in battery capacity

 This is bigger than the stuff we offer right now but here's a starting 
 list:

 1. 85W solar panel - You should be able to get for about $350 or less

 2. 12V 8A Solar Controller - You should be able to get for $60 or less

 3. 100Ah battery - You don't need a deep discharge type because the solar
 controller will disconnect the load when the battery voltage reaches 11.1V
 which protects the battery from over discharge. You just need a type that
 has good performance in cold weather. You should be able to pick up a
 battery for less than $200

 4. You'll need a mount for the solar panels try here:
 http://power-fab.com/products.htm They make all kinds of mounts. I'm not
 sure the cost.

 5. You'll need a vented outdoor enclosure if you are putting the battery
 inside. I've seen people put the battery in one of those plastic battery
 cases you see in small power boats and then the enclosure requirements for
 the controller and electronics becomes easy. We have suitable enclosures 
 for
 $70 14x10x5 Polycarbonate outdoor enclosure

 6. Wiring is quite simple.

 Any decent vendor will warranty the panels for 20-25 years and the solar
 controller for 1 year.

 Regards,
 Scott


 -Original Message-
 From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
 Behalf Of Marlon K. Schafer
 Sent: Monday, August 24, 2009 10:10 PM
 To: WISPA General List
 Cc: Principal WISPA Member List; isp-wirel...@isp-wireless.com
 Subject: [WISPA] solar site

 Hi All,

 Sorry for the cross post.  Time is short on this project and I need a lot 
 of

 help.

 I've never done a solar project.  Never really even looked at them due to
 the costs I've seen tossed about.

 Now I have a customer that's willing to purchase the initial equipment
 needed to cover his community.  The ONLY way into the area is a hill 
 that's
 within sight of my tower and NOT anywhere near power.

 I'll be able to just run a single MT board with two radios in it for this
 site.  One backhaul and 1 distribution.  I'll guess that I'll have less 
 than

 a 2 amp draw (probably much less than 1 amp in reality).

 We don't often get long periods of no sun.  Could be days of fog or low
 clouds in the winter, but mostly we'll have a lot of sun.  On the foggy or
 cloudy days we often don't have enough wind to worry about wind 
 generation.
 I think.

 So, please clue me in on what to buy, who to buy it from (vendors 
 welcome!)
 and anything else I'm missing.

 Thanks all!
 marlon





 
 WISPA Wants You! Join today!
 http://signup.wispa.org/


 

 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

 Archives: http://lists.wispa.org/pipermail/wireless/












 WISPA Wants You! Join today!
 http://signup.wispa.org/




 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

 Archives: http://lists.wispa.org/pipermail/wireless/ 

___

Re: [WISPA] [Wisp] solar site

2009-08-25 Thread John Thomas
Is there any reason you can't mount the panels close to the ground? In 
Nevada, this is common practice.

Can you setup a small windmill? Home Depot has these ( as do many other 
suppliers)
http://www.homedepot.com/h_d1/N-5yc1vZ1xr5/R-100658295/h_d2/ProductDisplay?langId=-1storeId=10051catalogId=10053

400 watts rated.

John


Marlon K. Schafer wrote:
 H.  Note to self.  Build good mounts, but make them so that they 
 collapse in high winds instead of breaking.

 Thanks for the tip Bill!
 marlon

 - Original Message - 
 From: Bill Prince part...@skylinebroadbandservice.com
 To: Principal WISPA Member List w...@wispa.org
 Cc: 'WISPA General List' wireless@wispa.org; 
 isp-wirel...@isp-wireless.com
 Sent: Tuesday, August 25, 2009 8:21 AM
 Subject: Re: [Wisp] [WISPA] solar site


   
 IMO 24 hours is not enough reserve.  In our area, we have many occasions
 when there is not enough sun for several days running.  I would plan on
 at least 100 hours reserve; more if you are more conservative.

 Another issue is storm damage.  Two years ago we lost the panels on a
 solar-powered site because of hurricane-force winds.  One of the panels
 only flew about 100 feet from the tower, and was not damaged
 electrically.  The other panel went 200 yards, and was damaged pretty
 badly.  We put the surviving panel back up in 3 days (we had to build a
 new mount, as the old one was completely destroyed).  Still, the site
 never went down because we built a week reserve into the batteries.

 We emergency-ordered a replacement panel, and got it less than a week
 later.  We were able to operate on that one panel for the intervening
 time.  We weren't completely charging the batteries, but there was
 enough reserve to limp along for the time we were down one panel.

 YMMV


 Bill Prince
 Skyline Broadband Service
 (a division of Coastal Sierra)
 650-917-9279



 Scott Parsons wrote:
 
 Hi Marlon, Long time...

 Voltage 12V
 Power Consumption: MT 4 watts, 2 Radio cards 8 watts
 Total= 12 watts @ 12V

 We have a handy calculator at
 http://tyconpower.com/learning_center/learning_center.htm

 I've attached the results. I used 4 hours of sun for your location based 
 on
 another post I saw.
 I used 24 hours extra battery capacity. You may want to increase or 
 decrease
 this depending on the reliability of the sun in your area.

 You need 73 watts minimum solar panel capacity
 You need at least 88 Ah in battery capacity

 This is bigger than the stuff we offer right now but here's a starting 
 list:

 1. 85W solar panel - You should be able to get for about $350 or less

 2. 12V 8A Solar Controller - You should be able to get for $60 or less

 3. 100Ah battery - You don't need a deep discharge type because the solar
 controller will disconnect the load when the battery voltage reaches 
 11.1V
 which protects the battery from over discharge. You just need a type that
 has good performance in cold weather. You should be able to pick up a
 battery for less than $200

 4. You'll need a mount for the solar panels try here:
 http://power-fab.com/products.htm They make all kinds of mounts. I'm not
 sure the cost.

 5. You'll need a vented outdoor enclosure if you are putting the battery
 inside. I've seen people put the battery in one of those plastic battery
 cases you see in small power boats and then the enclosure requirements 
 for
 the controller and electronics becomes easy. We have suitable enclosures 
 for
 $70 14x10x5 Polycarbonate outdoor enclosure

 6. Wiring is quite simple.

 Any decent vendor will warranty the panels for 20-25 years and the solar
 controller for 1 year.

 Regards,
 Scott


 -Original Message-
 From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
 Behalf Of Marlon K. Schafer
 Sent: Monday, August 24, 2009 10:10 PM
 To: WISPA General List
 Cc: Principal WISPA Member List; isp-wirel...@isp-wireless.com
 Subject: [WISPA] solar site

 Hi All,

 Sorry for the cross post.  Time is short on this project and I need a lot 
 of

 help.

 I've never done a solar project.  Never really even looked at them due to
 the costs I've seen tossed about.

 Now I have a customer that's willing to purchase the initial equipment
 needed to cover his community.  The ONLY way into the area is a hill 
 that's
 within sight of my tower and NOT anywhere near power.

 I'll be able to just run a single MT board with two radios in it for this
 site.  One backhaul and 1 distribution.  I'll guess that I'll have less 
 than

 a 2 amp draw (probably much less than 1 amp in reality).

 We don't often get long periods of no sun.  Could be days of fog or low
 clouds in the winter, but mostly we'll have a lot of sun.  On the foggy 
 or
 cloudy days we often don't have enough wind to worry about wind 
 generation.
 I think.

 So, please clue me in on what to buy, who to buy it from (vendors 
 welcome!)
 and anything else I'm missing.

 Thanks all!
 marlon