Yes I was warned about the head dissipation. Ultimately the best option is
to plug in a switching DC-DC converter. Will look for one but while I'm
waiting this may be the best option, albeit with a huge heat sink

- - -
*Olufemi Adalemo*
M: +234-803-5610040
M: +234-809-8610040
f...@adalemo.com




On Sat, Oct 20, 2012 at 1:57 AM, Blair Davis <the...@wmwisp.net> wrote:

>  Watch the heat dissipation on that...
>
> --
>
>
> On 10/19/2012 5:55 PM, Olufemi Adalemo wrote:
>
> A friend of mine suggested that I put a simple DIY LM317 voltage regulator
> on the line. Just built one and it works to reduce the voltage just enough
> for you to come in under the limit if you have a 24v solar power supply
> system
>
>  http://diyaudioprojects.com/Technical/Voltage-Regulator/
>
>   - - -
> *Olufemi Adalemo*
>  M: +234-803-5610040
> M: +234-809-8610040
>  f...@adalemo.com
>
>
>
>
> On Fri, Oct 19, 2012 at 1:27 PM, Chris Fabien <ch...@lakenetmi.com> wrote:
>
>> My guess would be inconsistent cheapo volt meter or power
>> supply/battery voltage was fluctuating.
>>
>> On Thu, Oct 18, 2012 at 10:24 PM, Greg Ihnen <os10ru...@gmail.com> wrote:
>> > That's what I thought... but... he said: "We see 27.3 volts at the
>> battery.
>> > And 27.1 volts at the top with no load"
>> >
>> >
>> > On Thu, Oct 18, 2012 at 3:57 PM, Chris Fabien <ch...@lakenetmi.com>
>> wrote:
>> >>
>> >> No current = no voltage drop. Ohms Law.
>> >>
>> >> On Thu, Oct 18, 2012 at 3:38 PM, Jeromie Reeves <jree...@18-30chat.net
>> >
>> >> wrote:
>> >> > The resistance of the length of wire.
>> >> >
>> >> > On Thu, Oct 18, 2012 at 11:03 AM, Greg Ihnen <os10ru...@gmail.com>
>> >> > wrote:
>> >> >> A voltage difference with no load? What's causing the drop?
>> >> >>
>> >> >>
>> >> >> On Thu, Oct 18, 2012 at 10:06 AM, Justin Wilson <li...@mtin.net>
>> wrote:
>> >> >>>
>> >> >>>         We see 27.3 volts at the battery. And 27.1 volts at the top
>> >> >>> with
>> >> >>> no load.
>> >> >>>  Obviously load will have an impact on this.
>> >> >>>
>> >> >>>         Justin
>> >> >>>
>> >> >>> -----Original Message-----
>> >> >>> From: Jeromie Reeves <jree...@18-30chat.net>
>> >> >>> Reply-To: WISPA General List <wireless@wispa.org>
>> >> >>> Date: Thursday, October 18, 2012 9:15 AM
>> >> >>> To: WISPA General List <wireless@wispa.org>
>> >> >>> Subject: Re: [WISPA] Another Ubiquity question
>> >> >>>
>> >> >>> >That depends on wire size. That distance is not going to be
>> ethernet
>> >> >>> >so I will assume #12 AWG, 400ft, copper wire, etc. You should be
>> >> >>> >seeing a 5.6% drop under a 1amp load or about 25v under load.
>> >> >>> >
>> >> >>> >
>> >> >>> >On Thu, Oct 18, 2012 at 6:02 AM, Justin Wilson <li...@mtin.net>
>> >> >>> > wrote:
>> >> >>> >>         27 volts at the base.  DC has very little loss over
>> 400-500
>> >> >>> >> foot
>> >> >>> >> distances.  We are seeing about .1 volt loss on a 400 foot run.
>> >> >>> >>
>> >> >>> >> -----Original Message-----
>> >> >>> >> From: Scott Lambert <lamb...@lambertfam.org>
>> >> >>> >> Reply-To: WISPA General List <wireless@wispa.org>
>> >> >>> >> Date: Thursday, October 18, 2012 12:16 AM
>> >> >>> >> To: <wireless@wispa.org>
>> >> >>> >> Subject: Re: [WISPA] Another Ubiquity question
>> >> >>> >>
>> >> >>> >>>On Wed, Oct 17, 2012 at 10:14:03PM -0400, Justin Wilson wrote:
>> >> >>> >>>>  Many UBNT deployments running at 27volts of clean DC power.
>> Not
>> >> >>> >>>> saying it's ideal but it works.
>> >> >>> >>>
>> >> >>> >>>27v at the ethernet port or 27v at the base of the tower?
>> >> >>> >>>
>> >> >>> >>>--
>> >> >>> >>>Scott Lambert                    KC5MLE
>> Unix
>> >> >>> >>>SysAdmin
>> >> >>> >>>lamb...@lambertfam.org
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