True. I have a couple of other sites with AirFibers that I need to get on to DC power, where I'm thinking it's going to make more sense to upconvert so I don't have to mess with the current battery setup.
On Wed, Jan 7, 2015 at 11:23 AM, Josh Luthman <[email protected]> wrote: > It's $75 and better to have more than enough that not enough > > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > On Wed, Jan 7, 2015 at 12:21 PM, Mathew Howard <[email protected]> > wrote: > >> It looks like the smallest RSD that will do 24v in and 48v out would be >> the RSD-200B-48? That seems like overkill to power one 20 watt radio. >> >> On Wed, Jan 7, 2015 at 11:20 AM, Josh Luthman < >> [email protected]> wrote: >> >>> That's a good reason to use 48v IMO >>> >>> >>> Josh Luthman >>> Office: 937-552-2340 >>> Direct: 937-552-2343 >>> 1100 Wayne St >>> Suite 1337 >>> Troy, OH 45373 >>> >>> On Wed, Jan 7, 2015 at 12:12 PM, Mathew Howard <[email protected]> >>> wrote: >>> >>>> The Mimosa specs actually say 20 watts max - I have no idea what they >>>> actually use. >>>> The reason I'm looking at doing 48v and down-converting is that I only >>>> have low voltage cable buried to the tower, so I'd be putting the >>>> down-converter at the base of the tower and running that at 48v to cut down >>>> on voltage drop. >>>> >>>> On Wed, Jan 7, 2015 at 11:06 AM, Josh Luthman < >>>> [email protected]> wrote: >>>> >>>>> Well assuming the Mimosa is like 50 watts, how much efficiency is >>>>> really going to happen here? Say it's crazy at 10% you're saving 5 watts. >>>>> The downside is your regulator needs to carry the wattage of say 8 APs, a >>>>> router, etc at 100 watts. >>>>> >>>>> >>>>> Josh Luthman >>>>> Office: 937-552-2340 >>>>> Direct: 937-552-2343 >>>>> 1100 Wayne St >>>>> Suite 1337 >>>>> Troy, OH 45373 >>>>> >>>>> On Wed, Jan 7, 2015 at 12:04 PM, Mathew Howard <[email protected]> >>>>> wrote: >>>>> >>>>>> I'm considering upconverting instead... it would actually be a lot >>>>>> easier, but I think it's probably going to make more sense in this >>>>>> particular case to go with a 48v power supply. that said, what would be a >>>>>> good option for a 24v to 48v upconverter? >>>>>> >>>>>> On Wed, Jan 7, 2015 at 10:51 AM, Mike Hammett <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> but backhauls use more power than APs, traditionally. >>>>>>> >>>>>>> Cambium tower radios support 48v. >>>>>>> >>>>>>> >>>>>>> >>>>>>> ----- >>>>>>> Mike Hammett >>>>>>> Intelligent Computing Solutions >>>>>>> http://www.ics-il.com >>>>>>> >>>>>>> ------------------------------ >>>>>>> *From: *"Josh Luthman" <[email protected]> >>>>>>> *To: *[email protected] >>>>>>> *Sent: *Wednesday, January 7, 2015 10:47:24 AM >>>>>>> *Subject: *Re: [AFMUG] Mimosa DC PoE injector >>>>>>> >>>>>>> >>>>>>> Cambium's latest is 24v >>>>>>> Ubnt is 24v >>>>>>> Mikrotik is 24v >>>>>>> >>>>>>> Big backhauls are 48v, but you typically have more APs than >>>>>>> backhauls. >>>>>>> >>>>>>> >>>>>>> Josh Luthman >>>>>>> Office: 937-552-2340 >>>>>>> Direct: 937-552-2343 >>>>>>> 1100 Wayne St >>>>>>> Suite 1337 >>>>>>> Troy, OH 45373 >>>>>>> >>>>>>> On Wed, Jan 7, 2015 at 11:44 AM, Bill Prince <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> I'd go with the native 48V for the Mimosa, and a down-converter >>>>>>>> for whatever needs 24V. More and more products are coming out with >>>>>>>> 48V, and >>>>>>>> it's easier, and lower current to go down voltage than up voltage. >>>>>>>> >>>>>>>> bp >>>>>>>> <part15sbs{at}gmail{dot}com> >>>>>>>> >>>>>>>> >>>>>>>> On 1/7/2015 8:41 AM, Josh Luthman wrote: >>>>>>>> >>>>>>>> For one device on 48v I'd do 24v natively and go up. Otherwise you >>>>>>>> have 1 part that you need to scale with for the rest of the tower. >>>>>>>> >>>>>>>> >>>>>>>> Josh Luthman >>>>>>>> Office: 937-552-2340 >>>>>>>> Direct: 937-552-2343 >>>>>>>> 1100 Wayne St >>>>>>>> Suite 1337 >>>>>>>> Troy, OH 45373 >>>>>>>> >>>>>>>> On Wed, Jan 7, 2015 at 11:39 AM, Chuck McCown <[email protected]> >>>>>>>> wrote: >>>>>>>> >>>>>>>>> It would do it. >>>>>>>>> Best? Yes in my opinion. >>>>>>>>> But that is only an opinion. May not truly be the best option for >>>>>>>>> you. >>>>>>>>> >>>>>>>>> *From:* Mathew Howard <[email protected]> >>>>>>>>> *Sent:* Wednesday, January 07, 2015 9:24 AM >>>>>>>>> *To:* af <[email protected]> >>>>>>>>> *Subject:* [AFMUG] Mimosa DC PoE injector >>>>>>>>> >>>>>>>>> I need to power a Mimosa B5 at a site where I only have DC at >>>>>>>>> the tower, would a WBMFG GigE-POE be the best thing to use to power >>>>>>>>> one of >>>>>>>>> these? >>>>>>>>> >>>>>>>>> Also, since I'm going to need to be converting to 48v, I'm >>>>>>>>> thinking of using a Meanwell AD-155C and an RSD-100C to downconvert >>>>>>>>> to 24v >>>>>>>>> for everything else - is there anything I should be looking at doing >>>>>>>>> differently? >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
