Oh, yeah, that was you! That makes sense. We are looking at using SyncBox 12's at the top just for timing FSK (and 450 too I guess). This allows us to run 48V up the tower which we use to power WS-12-250-DC's. The FSK/450 gets timing port sync from the SyncBox and 24V power from the WS-12-250-DC. No need for separate SyncInjectors or DC-DC converters in this scenario. Just an idea.
On Thu, Apr 28, 2016 at 11:25 AM, Scott Vander Dussen <sc...@velociter.net> wrote: > I'm the guy who just smoked a ring of FSK APs by running 48v to them! :) > I wanted to use 48v for the reasons you just stated but because much of > the Cambium equipment is only 24v this meant having a DC DC converter in > the enclosure which is another point of failure, expensive, and impractical > to step down large wattages. I understand the same point of failure is in > the WS but it's integrated and hidden so I pretend it's not there. :) > > With the 12awg SOOW we use even on a 600' run there is less than 3% > voltage drop. The WS can take as little as 9VDC. The rectifier can easily > be tuned up to 27v to offset any drop. Also we gut the AC DC supplies in > the 1016 Mikrotik and run it direct DC since it takes 24vdc. Everything is > fully DC, finally! > > I'll reply with ICT price when I'm back in the office. > > Thanks, > 'S > > Sent mobile! > > On Apr 28, 2016, at 09:15, Josh Baird <joshba...@gmail.com> wrote: > > Interesting that you are using 24V and not 48V especially since you are > running DC up the tower where voltage drop may be a concern. I realize the > WS-12-250-DC's will automatically up-convert to whatever, but they are more > efficient if you feed them a higher voltage (~48V). If you already have 4 > batteries at the base, what is keeping you from using a 48VDC rectifier? > > Would you mind sharing the approximate cost of that ICT? Off-list is fine > if you would like. > > Thanks, > > Josh > > On Thu, Apr 28, 2016 at 12:01 PM, Scott Vander Dussen <sc...@velociter.net > > wrote: > >> Thanks! The base of the tower is quite simple: >> >> >> >> Kendall Howard 12U 19" Wall Mount Rack http://goo.gl/pbpnbk >> >> ICT1200-24SBC 24v rectifier (also a 600W version available) >> http://goo.gl/GkOBBW >> >> 12v 45ah TR45-12 Tempest AGM Batteries (4x in parallel and series to make >> 24v) http://goo.gl/rCXciW >> >> 3U 19" Inch Rack Mount Shelf For Pro Audio and Computer Networking >> http://goo.gl/SJQ6DP >> >> MikroTik CCR1016-12S-1S+ http://goo.gl/h5N4RQ >> >> 6 Port Rack Mount Fiber Enclosure Pre-Loaded with SC SM Connectors >> http://goo.gl/8x5fcg >> >> >> >> The 4x batteries fit on the 3U tray and take up just under 4U of total >> height. There is enough room in the 12U rack for up to 2 of these 4U >> battery trays. The MikroTik is all SFP ports because we run fiber to >> everything, with the exception of one copper eth cable to the rectifier for >> battery management and monitoring. >> >> >> >> Incidentally the Mimosa B11 backhauls will accept the BiDi SFP >> transceivers linked on the SMM Details.PDF parts list, provided they are HP >> compatibility. So we use the switch to power the B11s and then it’s fiber >> goes directly into the fiber patch panel (fiber run in liquidtight from >> enclosure). The CCR1016 then has all the backhauls directly connected via >> fiber, and the APs are grouped 8 APs per switch (per fiber) so for every 8 >> APs there’s a full gig to the router. (You could have 12 APs per switch if >> you added 6 SyncInjectors total). The enclosures are standardized so we >> are building to have hot spares on standby ready to go in the event of a >> catastrophic failure. >> >> >> >> I was asked offline about what DC/fiber we’re using: >> >> 1000’ 12/4 SOOW SO 600V Power Cord http://goo.gl/mKVXG1 >> >> Armored outdoor OS2 singlemode 9/125 6-strand fiber, Male SC UPC Simplex >> to Male SC UPC Simplex, http://www.best-tronics.com/fiber.htm >> >> >> >> `S >> >> >> >> >> >> *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Josh Baird >> *Sent:* Thursday, April 28, 2016 04:32 >> *To:* af@afmug.com >> *Subject:* Re: [AFMUG] CMM for 2016 What's in the box? >> >> >> >> This looks nice. Good job. What all do you have at the bottom? >> >> >> >> On Wed, Apr 27, 2016 at 8:54 PM, Scott Vander Dussen <sc...@velociter.net> >> wrote: >> >> I built a CMM for 2016! >> >> Highlights: >> >> * Gigabit everything >> >> * BiDi fiber support for 6 devices >> >> * Sync/Power up to 24 devices >> >> * Power 24v and 48v devices >> >> * Temperature monitoring >> >> * Fan ventilation controlled by rain/condensation sensor >> >> * Fan seizure notification >> >> * LED light strip controlled by door >> >> * Door alarm trigger >> >> * Hoist pull loop >> >> * 20" x 18" x 10" >> >> * 36lbs >> >> * Price circa $2100 >> >> Photo here: https://dl.dropboxusercontent.com/u/6582330/WebJunk/SMM.jpg >> Parts list here: >> https://dl.dropboxusercontent.com/u/6582330/WebJunk/SMM%20Details.pdf >> >> Any suggestions to make this more awesome? >> >> [http://www.flutecrate.com/uploads/1/0/2/0/10200817/5243300_orig.jpg] >> >> >> > >
