Wow those Tycon panels look right up our alley - what exactly seems to be the preferred mounting bracket/hardware for these?
Thanks! -AJ On Fri, Jan 15, 2010 at 5:33 PM, Scott Parsons <sc...@e-zy.net> wrote: > You have plenty of battery capacity to handle your intermittent load so you > just really have to deal with the standby load. A 10W solar panel would > handle your standby load. > There's a handy calculator at tyconpower.com/learning_center > I would recommend a small 30W solar panel to take care of standby load and > give enough extra capacity to keep the battery bank fully charged. > A 12V 5A controller would handle the charging of the batteries and your > load. > Some prices from beezwaxproducts.com > 30W 12V panel $179 > 12V 5A controller $24.95 > > Scott > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of AJ > Sent: Friday, January 15, 2010 11:38 AM > To: WISPA General List > Subject: [WISPA] Solar suggestion for ultra low use site? > > Thought I'd tap in to the collective intelligence of the WISP group for > this > question... > > > Looking at setting up a solar powered VHF ham repeater in the middle of a > metro area for infill coverage... Site is land locked by ghetto on one side > and rail tracks on the other - commercial power is not an option. > > We have available a dozen or so surplus Alpha 85 amp hour gel cell > batteries > which test out at roughly 90% capacity (PM swaps)... > > The first thought was to simply charge up a battery for each event we work > in the downtown core, drop by the site and swap out whatever battery is in > place.. Not quite the most efficient plan. > > Our next thought was to place a decent sized array, maybe 300-400 amp hour, > then supplement with an off the shelf solar panel or two to maintain a > charge... > > Our equipment consists of an ancient GE MastrII repeater turned down to 25 > watts and an NHRC controller. Standby draw is 125 mA, transmit ramps up to > about 3.5 amps... > > Duty cycle is key here - we work perhaps a dozen events a year within the > coverage of this repeater for about 4 hours each on about a 10% duty cycle > (TX 6 out of every 60 minutes). The rest of the time the repeater sits idle > and will not transmit unnecessarily (no IDs or anything unless it's > actively > in use)... > > What is out there on the market for a low cost solar site? > > Thanks! > -AJ > > > > ---------------------------------------------------------------------------- > ---- > 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/ > -------------------------------------------------------------------------------- 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/
