Re: [WISPA] DC UPS (and Solar?) Setup.

2016-07-14 Thread Chris Ruschmann
also, size your battery strings to be the same or larger than your load in volts. down covering voltage uses less energy than up converting. so you will lose efficiencies if you go that route. example. running a 12 v battery bank using a netonix DC switch which will up convert to 48v for the

Re: [WISPA] DC UPS (and Solar?) Setup.

2016-07-14 Thread Chris Ruschmann
if your interested in understanding the technology, then this site has a lot of information on solar and DC in general. check out the faq's they are worth the read. http://www.solar-electric.com/learning-center Air fibers use a lot of power in DC land. The biggest thing is understanding your

Re: [WISPA] DC UPS (and Solar?) Setup.

2016-07-14 Thread Paul Hendry
Nice. How customisable is the charge/discharge side of this unit? Would be interested to see if they can be used with LiFePO4 cells. Also, roughly how much are these units? Many thanks, Paul. On 15/07/2016 12:33, Gino Villarini wrote: Just do use this and be done with all:

Re: [WISPA] DC UPS (and Solar?) Setup.

2016-07-14 Thread Gino Villarini
Just do use this and be done with all: http://www.alpha.com/index.php/products-mobile/cable-tv-broadband-products/ item/2448vdc-cordex-psu-2 On 7/14/16, 5:29 PM, "wireless-boun...@wispa.org on behalf of Duncan Gino Villarini President Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico

Re: [WISPA] FM Radio interference

2016-07-14 Thread Sean Heskett
i prefer liquidtight because the metal shield is protected by an outside coating. this keeps it both water tight and prevents it from becoming a giant conductor should it happen to touch a live wire somehow. you can buy it at any local electrical supply shop -sean On Thu, Jul 14, 2016 at 3:21

Re: [WISPA] FM Radio interference

2016-07-14 Thread Nick Bright
I knocked up a quick shopping list at Home Depot, even including all the fittings it's not bad. The OD on 3/4" Flex EMT is a little more than 1", so around $200 plus the cost of hangars for a full 300ft of tower height. While not cheap, it's not an overly expensive solution either. --

[WISPA] DC UPS (and Solar?) Setup.

2016-07-14 Thread Duncan Scott
Hi, So historically we've been a mostly AC setup, but I'm trying to figure out a DC setup for some of our smaller sites, and hopefully a solar setup as well. I'm new to all of this though so I'm trying to see if anyone has any written guides or part lists. Basic goal is to power an airfiber

Re: [WISPA] FM Radio interference

2016-07-14 Thread Nick Bright
On 7/14/2016 3:43 PM, Nick Bright wrote: > On 7/14/2016 3:35 PM, Shawn C. Peppers wrote: >> Fiber with direct dc power to a edgepoint that is inside a metal enclosure. >> Save yourself the hassle because you will always have problems if you do >> not. Put your cables out of the edgepoint to

Re: [WISPA] FM Radio interference

2016-07-14 Thread Nick Bright
On 7/14/2016 3:35 PM, Shawn C. Peppers wrote: > Fiber with direct dc power to a edgepoint that is inside a metal enclosure. > Save yourself the hassle because you will always have problems if you do not. > Put your cables out of the edgepoint to the radios in flexible EMT or MC > conduct. > >

Re: [WISPA] FM Radio interference

2016-07-14 Thread Jim Patient
Find out the exact frequency of the FM transmitter. Be sure none of your cable lengths are a multiple of the frequency and end up as an antenna. They can also cross a harmonic and pick up noise as well. The radio engineer for the FM site can tell you what lengths NOT to make your cables. A

Re: [WISPA] FM Radio interference

2016-07-14 Thread Dan Petermann
I’ve used ferrite beads designed for the FM frequency in use and placed them at 1/4 wave intervals on the ethernet (shielded). We haven’t had a problem since, but the run is fairly short. On Jul 14, 2016, at 2:18 PM, Marco Coelho wrote: > I have an existing tower that

Re: [WISPA] FM Radio interference

2016-07-14 Thread Nick Bright
On 7/14/2016 3:35 PM, Shawn C. Peppers wrote: > Fiber with direct dc power to a edgepoint that is inside a metal enclosure. > Save yourself the hassle because you will always have problems if you do not. > Put your cables out of the edgepoint to the radios in flexible EMT or MC > conduct. > >

Re: [WISPA] FM Radio interference

2016-07-14 Thread Shawn C. Peppers
Fiber with direct dc power to a edgepoint that is inside a metal enclosure. Save yourself the hassle because you will always have problems if you do not. Put your cables out of the edgepoint to the radios in flexible EMT or MC conduct. Shawn C. Peppers Video Direct Satellite & Entertainment

Re: [WISPA] FM Radio interference

2016-07-14 Thread Nick Bright
I've had similar experiences at FM sites. The basic issue is that many FM transmitters have a spurious spike about 1MHz wide right around 32MHz. Since 100Mbps and 1000Mbps ethernet use a base frequency of 32.5MHz, this is what causes your issue. If this spurious emission from the transmitter

Re: [WISPA] FM Radio interference

2016-07-14 Thread Sean Heskett
we have had good luck with shielded cable inside liquidtight conduit, but even then sometimes it doesn't work. fiber is the only way to truly "fix" the problem. also we could that grounding the cables only at the bottom helped (instead of at the top and bottom). -sean On Thu, Jul 14, 2016 at

[WISPA] FM Radio interference

2016-07-14 Thread Marco Coelho
I have an existing tower that has a FM transmitter on it. I believe they are just under 10,000 Watts. Since we have been one that tower, I could never link up Ethernet that runs up the tower to the equipment on the bottom at 100BT. I've tried ferrite rings on both ends, all cables are shielded

Re: [WISPA] Meanwell DIn rail power supplies

2016-07-14 Thread Randy Cosby
Exactly, that's what we do. The Meanwell UPS does not have low-voltage disconnect. From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Steve Barnes Sent: Thursday, July 14, 2016 10:15 AM To: WISPA General List Subject: Re: [WISPA] Meanwell

Re: [WISPA] Meanwell DIn rail power supplies

2016-07-14 Thread Steve Barnes
Usually UPS have a voltage that they shut down the power and doesn't let the batteries go to 0Volts and collapse the batteries. If you use a Netonix to power your stuff then you can set it to shut down at a voltage. Steve Barnes Wireless Operations Manager PCSWIN.COM NLBC.COM From:

Re: [WISPA] Meanwell DIn rail power supplies

2016-07-14 Thread Steve Barnes
Clay, With the battles you have undergone and the lumps you have undertaken, You can handle this. But it sure looks like you never get a break brother. Good luck. Steve Barnes Wireless Operations Manager PCSWIN.COM NLBC.COM From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org]

Re: [WISPA] Meanwell DIn rail power supplies

2016-07-14 Thread Randy Cosby
Can someone comment on what value there is in the UPS module, vs just using the charger and running the load off the batteries? I can see value in the relay contacts for battery status, but if those are not being monitored, what else is that unit good for? There is no LVD, no temperature

Re: [WISPA] Meanwell DIn rail power supplies

2016-07-14 Thread Josh Luthman
Why ouch? Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Thu, Jul 14, 2016 at 11:45 AM, Clay Stewart < cstew...@stewartcomputerservices.com> wrote: > Good info, thanks. > > Also, my daily google scan picked this up... >

Re: [WISPA] Meanwell DIn rail power supplies

2016-07-14 Thread Clay Stewart
Good info, thanks. Also, my daily google scan picked this up... http://www.pressreleaserocket.net/signawave-chooses-telrad-networks-for-virginia-lte-internet-deployment/470238/ ouch. On Thu, Jul 14, 2016 at 10:08 AM, Scott Reed wrote: > DR-xxx-24 is not just a

Re: [WISPA] Meanwell DIn rail power supplies

2016-07-14 Thread Scott Reed
DR-xxx-24 is not just a charger, it is a full power supply. We used them with and without the DR-UPS40. SD and RSD have smaller footprint. On 7/14/2016 10:01 AM, Steve Barnes wrote: Fully din rail is a 2 part unit. DR-120-24 as battery charger and DR-UPS40 is the UPS In non-DIN there is

Re: [WISPA] Meanwell DIn rail power supplies

2016-07-14 Thread Josh Luthman
SD works for me but people have said RSD is better. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Jul 14, 2016 2:20 AM, wrote: > I know this has been covered a bazillion times but i couldn't find the > threads. > > I

[WISPA] Meanwell DIn rail power supplies

2016-07-14 Thread mike . lyon
I know this has been covered a bazillion times but i couldn't find the threads. I don't need UPS capability. Was there a specific Meanwell line to watch out for? Thank You, Mike ___ Wireless mailing list Wireless@wispa.org