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? >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>> >>>> >>> >> >
