I don’t know if AF24 uses standard 802.3af/at or proprietary and how much power, but there are 802.3af/at POEs that can be powered from 24V and convert to 48 or 56 volts internally, for example:
http://www.balticnetworks.com/tycon-power-18-36vdc-in-56vdc-802-3af-at-out-35w-dcdc.html http://www.air802.com/dc-dc-converter-802.3af-compliant-poe-injector-adapter-with-9-36vdc-input-48vdc-output-din-rail-mount.html You could also check Netonix and WiFi Texas. Or get yourself a Mean Well RSD-200B-48 http://www.alliedelec.com/mean-well-usa-rsd-200b-48/70272993/ BTW, nice to see Allied carrying more Mean Well stuff. From: Josh Baird Sent: Monday, September 14, 2015 12:29 PM To: af@afmug.com Subject: Re: [AFMUG] GigE DC PoE Injectors You either need to switch 'Site 2' to use a 48V battery plant, or use a DC-DC converter to convert 24V to 48V in order to power your AF24. On Mon, Sep 14, 2015 at 1:27 PM, Gilbert T. Gutierrez, Jr. <mailing-li...@phxinternet.com> wrote: Thank you for your response. I think my question did not go deep enough. Here are some issue I have... 1. I do not know if what PoE standards are used by the different radios. As I am doing my research, I am seeing that there are 2 standards 802.3af (2 pairs providing power?) and 802.3at (All 4 pairs providing power?). 2. I have 2 test sites that I am using to determine what I am going to roll out to other sites. a. Site 1 has a 48V power plant and a device like yours looks like it could work (site has a proxim radio). b. Site 2 has a 24V power plant (site has a AF24 radio). My SAF radios come with power injectors that allow me to input 24V or 48V and output 48V to the radios allowing me to use those with different power plants. My site 2 needs a power supply that can take the 24V input and bump it before putting it on the line. Gilbert On 9/14/2015 9:47 AM, Chuck McCown wrote: http://www.mccowntech.com/gige-poe-apc-ethernet-surge-suppressor-protector/ http://www.mccowntech.com/gige-poe-midspan-poe-injector-ethernet-surge-suppressor-protector/ -----Original Message----- From: Gilbert T. Gutierrez, Jr. Sent: Monday, September 14, 2015 10:45 AM To: af@afmug.com Subject: [AFMUG] GigE DC PoE Injectors I am moving many of my sites to DC Power Plants and need to find DC PoE injectors for the following radios... Proxim Tsunami QB-8200 (I believe the pinouts are the same as a SAF licensed radio) Ubiquit airFiber 24 These radios are all 48V input and I am looking for injectors to power them that will accept both 48V and/or 24V inputs. Does anyone have any suggestions? Gilbert
