That would be cool
Josh Reynolds, Chief Information Officer
SPITwSPOTS, www.spitwspots.com <http://www.spitwspots.com>
On 10/05/2014 10:46 PM, Forrest Christian (List Account) via Af wrote:
Ok. Got it. I've also at one time or another thought that it would
be neat to do it the other way for MTU settings. One radio on the
roof, plugged into an ethernet switch and the whole thing powered from
PoE from each tenant where only one tenant needed to have their poe
plugged in to power on the whole device.
-forrest
On Mon, Oct 6, 2014 at 12:44 AM, timothy steele via Af <[email protected]
<mailto:[email protected]>> wrote:
I was talking about powering 1 CPE and 1 AP with 1 POE for micro pops
—
Sent from Mailbox <https://www.dropbox.com/mailbox>
On Mon, Oct 6, 2014 at 2:40 AM, Forrest Christian (List Account)
via Af <[email protected] <mailto:[email protected]>> wrote:
150W is pretty hard to deliver via CAT5.
Each wire is rated at .577 amps. Ignoring other concerns,
this means at 48V, you get about 25 watts with a bit of
margin, per wire. If you are sending the power up on two
pairs, and returning it on the other two, this means you only
have about 100W total you can do via CAT5 (110W with no
margin). To do over 100W you have to use something else for
the return path, say the tower or a ground wire - in which
case you could send 200W up a CAT5 cable and return it via ground.
Personally once you get that much power in a CAT5 cable it
scares me. A LOT of voltage drop, challenges in injection
methods, etc
Most ethernet magnetics top out at about 25.5W for power on
two pairs, and 51W for four. This also corresponds to the
802.3at spec. I guess if you're returning on ground, you can
also get 102W.
Right now I'm focusing on the <50W category (ok, maybe a
smidgen more).
-forrest
On Sun, Oct 5, 2014 at 6:46 PM, Matt Jenkins via Af
<[email protected] <mailto:[email protected]>> wrote:
Exalt ExtremeAir Radios draw 135watt average over PoE.
Telrad Radios we use draw up to 150watt but usually around
120ish.
Matthew Jenkins
SmarterBroadband
[email protected] <mailto:[email protected]>
530.272.4000 <tel:530.272.4000>
On 10/05/2014 04:55 PM, Gino Villarini via Af wrote:
What radio needs 150w?
Gino A. Villarini
President
Aeronet Wireless Broadband Corp.
www.aeronetpr.com <http://www.aeronetpr.com>
@aeronetpr
From: "[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>"
<[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>>
Reply-To: "[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>"
<[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>>
Date: Sunday, October 5, 2014 at 7:14 PM
To: "[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>"
<[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>>
Subject: Re: [AFMUG] PacketFlux Product Ideas
This is actually in the category of what I'm expending
a fair bit of R&D on right now.
The challenge comes cost. 150watt per port is very
expensive to do when factoring in the DC-DC
conversion. 20W is easy. 50W is a bit harder. 150W
gets very expensive quickly.
As a result, I'm thinking somewhat modular, i.e.
pick/choose.
I also have to be mindful of the competitors in the
space, in that I want to be different in the right
ways. The power injection/switching space is quite
crowded.
-forrest
On Sun, Oct 5, 2014 at 2:35 PM, Matt Jenkins via Af
<[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>> wrote:
Our infrastructure sites look like this:
Shielded Cables -> 8 or 24port shielded patch panel
-> APC PRM24 with WB Surge Modules
-> PoE Injectors
-> Switch / Router
PoE Injectors are attached to a Masterswitch.
<pipe dream>
I know this probably is not feasible but....
What I would REALLY like is an active PoE midspan
injector (8/24
gigabit port). Something that does not require a
site monitor (has
web/snmp function built in). It takes AC power and
can output DC
to each type of device. This device would be
software configurable
for power type and has apc masterswitch
functionality. It would
need to support up to 150watt per port for WiMAX
and Licensed Link
Radios. It would need to support from 12vdc to
56vdc output. If
there was a model that also supported power out to
a few (4) AC
outlets I wouldn't even need an APC Masterswitch.
The goal is to
replace all those PoE injectors which don't mount
in a rack or on
a din rail in a box.
</pipe dream>
Matthew Jenkins
SmarterBroadband
[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>
530.272.4000 <tel:530.272.4000> <tel:530.272.4000
<tel:530.272.4000>>
On 10/05/2014 01:19 PM, Forrest Christian (List
Account) via Af wrote:
It's been (quite) a while since I sent one of
these messages
out to the list.
With the release of all of our new gigabit
injectors, it is
time for me to decide which products will be
next out the door
at PacketFlux.
We've got several products at various stages
of completion,
but almost all of them I expect to be very low
volume projects
- the type of products we complete just
because they help fill
out our product offering instead of expecting
a lot of revenue
from them. A couple of these have appeared
on the website
recently - I.E. a 2 Relay, 3 Switch module,
and the
voltmeter/shunt input modules.
So, what I'd love to hear is some suggestions
for products
PacketFlux could build which would help you in
your WISP. I'm
particularly looking for products which if
they existed would
go at every one of your tower sites, or even
better at every
customer location. I know these product ideas
exist out
there, and I'd love to hear them. Feel free
to throw ideas
out which are outside of the narrow niche that
you think of
PacketFlux fitting into.
One final note - there is always a query for
an all-in-one
tower device which includes some mixture of ac
power supply,
dc-dc conversion, battery charging/management,
Ethernet
switch, router, power injection, fiber
conversion, etc.. I've
heard those loud and clear and am aware of
that desire.
There's work being done in-house toward
something like that,
but there are many hurdles left to make it a
reality. If
there's a simplified version of this which
would fit a
specific, widespread, need I'd love to hear
about it, but the
idea of a device you put into your rack and it
handles
everything needed at a tower site is still
quite a ways off
for us.
So, throw your best ideas out there... I'd
love to take a
couple and run with them.
-forrest
