Time to connect a power-over-ethernet and ethernet-over-powerlines adapter in a loop and create free limitless energy. Who needs the E-cat????!?!
On Mon, Jan 4, 2016 at 4:47 PM, Jaime Solorza <losguyswirel...@gmail.com> wrote: > Stop making sense... it's disturbs the space time continuum > On Jan 4, 2016 5:33 PM, "That One Guy /sarcasm" <thatoneguyst...@gmail.com> > wrote: > >> POE is quite the crackwhore of terms nowadays, alot of people use her in >> alot of different ways and nobody wants to pay much. I wish there was just >> a design standard that just auto sensed and applied, 24v 48v pick a pair. >> Just to eliminate the additional stocking of appropriate power supplies and >> surge suppression, they would be worth a little more, and if it were to >> become common the cost would drop >> >> On Mon, Jan 4, 2016 at 5:30 PM, George Skorup <geo...@cbcast.com> wrote: >> >>> I believe Phihong wired it that way so that you can use it as a 3at >>> compliant injector where only two pairs may be present (so 10/100 only). IP >>> phones come to mind. We run into a lot of older-ish structured wiring where >>> they ran only one cat5 and stole one pair for phone and two pairs for >>> ethernet. Not the way I'd do it, but whatever. Most of the phones we're >>> using now have a built-in GigE switch. >>> >>> I remember seeing in the 450i guide that it will take either polarity on >>> all pairs. If you're not using the aux port, then two pairs for power (30W) >>> will be fine. If you are, or I suppose if it's a long run, then all four >>> pairs for power would be warranted. I really like this PoE design. Would be >>> nice if the regular 450 APs would take 48-56VDC. I know they talked about >>> that at one point, but it looks like we're limited to 30VDC. Well, at least >>> that's what the label says. >>> >>> The whole pin swapping thing with the 450i and CMM4 is because 56VDC >>> mode on the CMM4 is wired for the split pair 320/430 config. With the AP >>> being pair polarity agnostic, you don't need to do the swapping when using >>> a SyncInjector. Basically it will take the standard Canopy POE pinout, just >>> needs to be >=48VDC. Probably more like >40VDC. >>> >>> On 1/4/2016 12:50 PM, Ken Hohhof wrote: >>> >>> Good point about the power being on 1/2 and 3/6. I guess that makes it >>> 802.3at Alternative A wiring. According to the schematic, 4/5 and 7/8 are >>> wired straight through with no transformer. So gigabit compatible with >>> only 2 transformers. Probably for non gigabit compatible, Alternative B is >>> cheaper because you don’t need any transformers at all. And the 60-75 watt >>> POEs use all 8 wires for data and power, so 4 transformers. >>> >>> So confusing! >>> >>> I can’t find any wiring diagrams for the Cambium N000065L001B, but at 60 >>> watts, I guess it must use all 8 wires for power. Hence the price? >>> >>> Something else I notice is the Cambium POE is rated for 0 to 40C, while >>> the Phihong unit is rated –20 to +65C. Cambium tells you to use a PIDU for >>> non controlled environment. Or Netonix or GIGE-POE-APC or Syncinjector. >>> >>> Still, AC powered POEs are handy for configuring radios on the bench, or >>> like that case where I needed a POE at a customer’s office to power a SIP >>> paging amplifier. >>> >>> >>> *From:* George Skorup <geo...@cbcast.com> >>> *Sent:* Monday, January 04, 2016 2:35 AM >>> *To:* af@afmug.com >>> *Subject:* Re: [AFMUG] 802.3at POEs >>> >>> It's cheaper at Allied: >>> http://www.alliedelec.com/phihong-poe36u-1at-r/70124112/ >>> >>> Yeah, if you're not going to use the Aux port on the 450i, there's no >>> reason to buy a 60W injector. Just keep in mind that this Phihong injector >>> is power over the 10/100 data lines. And is - on 1&2, + on 3&6. It'll work >>> perfectly fine with the 450i APs and 5GHz SMs. And obviously the Exalt >>> ExtendAir G2. The 450i is awesome with the any pair power setup. >>> >>> The one thing I will say about this thing is that it runs a bit hot and >>> if your hearing is decent, you can definitely hear the switcher whining >>> away. >>> >>> On 1/3/2016 7:29 PM, Ken Hohhof wrote: >>> >>> I'm getting more and more equipment with 802.3at POEs, and I feel like >>> I'm getting raped on the price if I get the POE from the equipment vendor. >>> High price and minimal features. >>> >>> My Exalt G2 radios came with these really nice POEs that have diagnostic >>> LEDs and tabs for wall mounting as well as rubber feet for desktop use. >>> The only downside is they are kind of big, but that's not necessarily bad, >>> that may help prevent overheating. It has LED indications for valid >>> 802.3af and 802.3at signatures, as well as a flashing overload indication. >>> >>> I looked up the part number, expecting them to be expensive, but >>> Digi-Key has a bunch of them in stock and the price is quite reasonable >>> ($38 in single quantity). >>> >>> <http://www.digikey.com/product-detail/en/POE36U-1AT/993-1088-ND/2384576> >>> http://www.digikey.com/product-detail/en/POE36U-1AT/993-1088-ND/2384576 >>> >>> From the picture, this is also the POE that I should have gotten from >>> CyberData to go with the SIP paging amplifier I bought, but instead they >>> sent a cheaper L-Com POE that has just one dumb LED to show it is getting >>> AC power. So I paid something like $64 for a $31 POE. >>> >>> The $100 Cambium POE for 450i is probably more than 36 watts in case you >>> want to use the AUX port on the AP, but it lacks the nice mounting tabs and >>> diagnostic LEDs. And 36 watts should be more than enough to power just the >>> AP. >>> >>> So I’m inclined to just buy a bunch of the nice Phihong units and use >>> them on everything. Am I missing something? >>> >>> >>> >>> >> >> >> -- >> If you only see yourself as part of the team but you don't see your team >> as part of yourself you have already failed as part of the team. >> >
