Anyone heard of a gigabit switch that runs on -48vdc that doesn't cost
an arm and a leg? Only need a few ports, 8-16 would do. preferably
rackmountable.
I can find plenty of inexpensive gigabit switches, but they normally
don't list their power supply voltage, or they list 110v
Another option is
From: Roger Howard g5inter...@gmail.com
Sent: Thursday, March 18, 2010 1:20 PM
To: WISPA General List wireless@wispa.org
Subject: [WISPA] -48vdc Gigabit switch
Anyone heard of a gigabit switch that runs on -48vdc that doesn't cost
an arm and a leg? Only need a few ports, 8-16 would do
--
*From*: Roger Howard g5inter...@gmail.com
*Sent*: Thursday, March 18, 2010 1:20 PM
*To*: WISPA General List wireless@wispa.org
*Subject*: [WISPA] -48vdc Gigabit switch
Anyone heard of a gigabit switch that runs on -48vdc that doesn't cost
an arm and a leg? Only need a few ports
@wispa.org
*Subject*: [WISPA] -48vdc Gigabit switch
Anyone heard of a gigabit switch that runs on -48vdc that doesn't cost
an arm and a leg? Only need a few ports, 8-16 would do. preferably
rackmountable.
I can find plenty of inexpensive gigabit switches, but they normally
don't list their power
On 18 March 2010 14:48, Cameron Crum cc...@dot11net.com wrote:
You could always reverse the leads for a +48 switch or pull 12v or 24v
off one or two of the batteries.
No no no, *DO NOT* do this! -48vdc, but its very nature, is positive ground.
If you plug in a +48vdc device with the polarity
for you.
I think its around $400.
Nick Olsen
Network Engineer / Customer Support
(321) 205-1100 x106
--
*From*: Roger Howardg5inter...@gmail.com
*Sent*: Thursday, March 18, 2010 1:20 PM
*To*: WISPA General Listwireless@wispa.org
*Subject*: [WISPA] -48vdc Gigabit
Point taken. I've ever tried attaching anything but a small switch and
it's always worked out.
On 3/18/2010 1:11 PM, Jeremy Parr wrote:
On 18 March 2010 14:48, Cameron Crumcc...@dot11net.com wrote:
You could always reverse the leads for a +48 switch or pull 12v or 24v
off one or two of
Listwireless@wispa.org
*Subject*: [WISPA] -48vdc Gigabit switch
Anyone heard of a gigabit switch that runs on -48vdc that doesn't cost
an arm and a leg? Only need a few ports, 8-16 would do. preferably
rackmountable.
I can find plenty of inexpensive gigabit switches, but they normally
don't
Parr jeremyp...@gmail.com
To: WISPA General List wireless@wispa.org
Sent: Thursday, March 18, 2010 3:11 PM
Subject: Re: [WISPA] -48vdc Gigabit switch
On 18 March 2010 14:48, Cameron Crum cc...@dot11net.com wrote:
You could always reverse the leads for a +48 switch or pull 12v or 24v
off one
++
--
From: Cameron Crum cc...@dot11net.com
Sent: Thursday, March 18, 2010 11:48 AM
To: ro...@g5i.net; WISPA General List wireless@wispa.org
Subject: Re: [WISPA] -48vdc Gigabit switch
You could always reverse the leads for a +48 switch or pull 12v or 24v
off one or two
: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
Behalf Of Tom DeReggi
Sent: Thursday, March 18, 2010 6:26 PM
To: WISPA General List
Subject: Re: [WISPA] -48vdc Gigabit switch
While on the subject Anyone know why the concept of positive ground
was implimented? What
On 18 March 2010 19:26, Tom DeReggi wirelessn...@rapiddsl.net wrote:
While on the subject Anyone know why the concept of positive ground
was
implimented? What was accomplished by not doing negative ground like
everything else typically does?
My understand is that a negative ground
...hence, the current reality.
Thanks,
. . . J o n a t h a n
-Original Message-
From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
Behalf Of Jeremy Parr
Sent: Thursday, March 18, 2010 8:19 PM
To: WISPA General List
Subject: Re: [WISPA] -48vdc Gigabit switch
On 18
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