FWIW - we *rarely* (knocks on wood) have sync problems using only the GPS pucks with ePMP 1K/2K.
I'd like to convert to a -48VDC rectifier based solution for large sites, but I don't want to have to throw in bunch of isolated DC/DC converters to power things like CCR1009's. I guess I could power the CCR via PoE from a Netonix or something, but I would like to avoid this. Then again.. if all of the backhauls at a given site are powered by the Netonix, I guess it doesn't really matter since if the switch dies, I won't have connectivity to the router anyways.. On Mon, Jan 29, 2018 at 11:01 AM, George Skorup <[email protected]> wrote: > That current though. I'm looking at doing a rack mount cabinet and telco > rectifier at medium and large sites going forward. It just makes sense. > What really sucks is when a small site turns into a medium site and then > there's not enough cabinet space. So I'm gathering some ideas and costs to > just do the same thing at every site. Everything except the really small > sites where we might have something like an ePMP omni and a handful of > customers. Which is yet another problem. Might as well use an ePMP 2k lite, > which is 48vdc. And then backhaul it on a Force200 or 450SM, which is > obviously 24vdc. Ugh. Most of the time we just say screw it and throw in a > small APC UPS, a switch and POE bricks. Perhaps that's somewhere something > like a small Netonix switch with internal DC-DC converters would be useful. > Until the on-board GPS goes to shit and you have no sync. It's never ending > round and round WTF do I do for these. > > On 1/29/2018 9:29 AM, Adam Moffett wrote: > > There's a lot to like about that setup. The DR-UPS can do 40amp on 24v, > so your upper limit is almost 1kW. Just drive it with a bigger 24v supply > as needed. > > What has held me back from that in the past is the DR-UPS is not available > in 48v, and the biggest power consumers I have are 48V. I went to Traco to > stay 48V. OTOH your rig is so much cheaper than Traco that adding an > RSD-300B-48 for another $100 is not a bad deal. > > > ------ Original Message ------ > From: "David Coudron" <[email protected]> > To: "[email protected]" <[email protected]> <[email protected]> > Sent: 1/28/2018 10:39:56 PM > Subject: Re: [AFMUG] Dc plant conversion > > Here is what we are doing, I think this is close to what Steve is asking > for: > > > > Meanwell SDR-240-24 AC to DC power source: $84 > > Meanwell DR-UPS40 Battery Float/UPS: $37 > > Tycon TPDIN MonitorWeb2: $131 > > 24 V of battery backup $70-120 depending on the runtime looking for > > Netonix 150 W or 250 DC switch: $250-350 (This is really the only > expensive component) > > Heater: $65 > > Fan: $14 > > > > With this, we can run 5-8 hours on very small batteries, we figure we have > several hours to get a generator to the site if power isn’t coming back. > We run all POE from the Netonix, it works really well. Here are the other > things we can do with the box: > > 1. Monitor temp in the cabinet > 2. Monitor/alert on loss of AC line power through TP DIN > 3. Monitor voltage of the batteries > 4. Monitor voltage to the Netonix > 5. Monitor Current to the Netonix > 6. Monitor Current in/out of the batteries > 7. Auto start the heater below 40 degrees > 8. Auto start the fan above 80 degrees > 9. Power cycle the netonix from the TP DIN > 10. Power cycle any AP, Router, Backhaul from the Netonix > > > > We also put a Mikrotik router in this cabinet. Usually a Hex POE (for > small sites) or a 3011 for larger sites. > > > > We have 13 in the field set up like this and are going 15 more right > now. While it might be a little more than what you were thinking, it > gives us a ton of control for pretty minimal investment per site. > > > > Best part is, no coding necessary. Doing all this with the Monitor Web2 > settings and/or SNMP. Let me know if you are interested in pictures. > For this second batch we have started using Terminal blocks to clean up the > wiring, the cabinets look a little better, but we went to a smaller poly > cabinet that makes things a little tight. > > > > Regards, > > > > David Coudron > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Carl Peterson > *Sent:* Saturday, January 27, 2018 5:39 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] Dc plant conversion > > > > You can still do DC-DC off it and then hook up netonix. If I had to do it > now I'd go with the IDC switch. When we did our design, the idc didn't > exist so we just went down to 24V off of our A and B sides and run a > redundant powered 24V bus which all the netonix switches run on. > > > > I better buy up another batch of Elteks before all y'all buy them all up. > These are mostly decommissioned Sprint/Clearwire btw. > > > On Jan 27, 2018, at 1:02 PM, Josh Baird <[email protected]> wrote: > > A 12 port version would be nice. Looks like the 26 port version is $600. > > > > On Sat, Jan 27, 2018 at 12:59 PM, Gino A. Villarini <[email protected]> > wrote: > > Used to, now with the IDC model is not needed (isolated dc)… > > > > *From: *Af <[email protected]> on behalf of Josh Baird < > [email protected]> > *Reply-To: *"[email protected]" <[email protected]> > *Date: *Saturday, January 27, 2018 at 1:51 PM > *To: *"[email protected]" <[email protected]> > *Subject: *Re: [AFMUG] Dc plant conversion > > > > Which Netonix are you running at - 48V? Or are you using an isolated > DC/DC converter in between the -48V rectifier and Netonix? > > > > On Sat, Jan 27, 2018 at 12:49 PM, Gino A. Villarini <[email protected]> > wrote: > > Refurb/ used Eltek/Valere –48 Rectifier shelf off Ebay ~$400 + 1 Netonix > IDC Switch $400… all done. You can power 90% of WISP gear > > > > *From: *Af <[email protected]> on behalf of Steve Jones < > [email protected]> > *Reply-To: *"[email protected]" <[email protected]> > *Date: *Friday, January 26, 2018 at 9:49 PM > *To: *"[email protected]" <[email protected]> > *Subject: *[AFMUG] Dc plant conversion > > > > Any of you folks who know both dc plant and even more know small wisp > budget interested in looking at our gear and power setup and giving > realistic advice that doesnt have a 10 different 500 dollar components > combined with a full time linux guy and a full time coder? > > > > Id love you to do it out of the kindness of your heart, but i do have some > advisory busget. > > > > Im just tired of the apc ups waste and super ghetto runtimes on batteries > coupled with having to accept we are destroying runtimes by letting the > apcs die..... please, somebody, please. Otherwise i have to go to the > facebook groups, and thats like going to a mikrotik or ubnt forum. > > > > > > >
