With one AirFiber running 50 watts, it will probably be consuming more
power than all the other devices at the PoP. That is a big load on a
24V battery system (2 amps continuous). Much easier to run that 50
watts at ~~ 56V and consume a bit less than an amp.
bp
<part15sbs{at}gmail{dot}com>
On 1/7/2015 9:28 AM, Mathew Howard wrote:
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] <mailto:[email protected]>> wrote:
It's $75 and better to have more than enough that not enough
Josh Luthman
Office: 937-552-2340 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Wed, Jan 7, 2015 at 12:21 PM, Mathew Howard
<[email protected] <mailto:[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]
<mailto:[email protected]>> wrote:
That's a good reason to use 48v IMO
Josh Luthman
Office: 937-552-2340 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Wed, Jan 7, 2015 at 12:12 PM, Mathew Howard
<[email protected] <mailto:[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]
<mailto:[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 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Wed, Jan 7, 2015 at 12:04 PM, Mathew Howard
<[email protected]
<mailto:[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] <mailto:[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]
<mailto:[email protected]>>
*To: *[email protected] <mailto:[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 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Wed, Jan 7, 2015 at 11:44 AM, Bill
Prince <[email protected]
<mailto:[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
<tel:937-552-2340>
Direct: 937-552-2343
<tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Wed, Jan 7, 2015 at 11:39 AM,
Chuck McCown <[email protected]
<mailto:[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
<mailto:[email protected]>
*Sent:* Wednesday, January 07,
2015 9:24 AM
*To:* af <mailto:[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?
