Re: [WISPA] Another Ubiquity question

Fri, 19 Oct 2012 17:57:33 -0700

Watch the heat dissipation on that...

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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


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Olufemi Adalemo
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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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>> >>> >>
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