my mind just melted On Mon, Jan 4, 2016 at 8:29 PM, Eric Kuhnke <[email protected]> wrote:
> 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 <[email protected]> > wrote: > >> Stop making sense... it's disturbs the space time continuum >> On Jan 4, 2016 5:33 PM, "That One Guy /sarcasm" < >> [email protected]> 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 <[email protected]> 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 <[email protected]> >>>> *Sent:* Monday, January 04, 2016 2:35 AM >>>> *To:* [email protected] >>>> *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. >>> >> > -- 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.
