Doesn't Baicells have some sort of included/supported gps receiver?
On Sep 7, 2017 2:00 PM, "George Skorup" <george.sko...@cbcast.com> wrote: > Baicells supports PTP and Cambium has stated the 450i and 450m will get > support at some point. > > A future software update for the RackInjector that would give us PTP would > be cool. Another thing I hope to see is PDU-like cards for direct DC/SFP > radios, including -48 support for high-power radios, even if the card had > to have its own master/input like the regular 5ch PDU. > > Yeah, do the USB GPS. Then shut up and take my money. :) One of the things > I was actually thinking about playing around with is PTPd on CentOS 7. > Obviously it's just software, but it should be sufficient for bench testing. > > On 9/7/2017 5:39 AM, Forrest Christian (List Account) wrote: > > I am mindful about 1588v2 - I just don't have an active market to sell to > right now, and the level of engineering there is a bit more than I want to > bite off unless I have a known market. > > The usb to GPS device is easy to do, and definitely in the category of a > weekend project, which is why it is likely to just happen. > > On Wed, Sep 6, 2017 at 10:22 PM, George Skorup <george.sko...@cbcast.com> > wrote: > >> I'm down for buying a handful whenever you decide to make something. >> >> Output from the RackInjector management port and/or a dedicated device >> could be extremely useful. Hmm. How about ieee1588v2 PTP? That would be >> cool. >> >> On 9/6/2017 10:34 PM, Forrest Christian (List Account) wrote: >> >> My rough draft here is a USB-serial interface with an isolated DC-DC >> converter and a isolated usb-serial interface, so you are at least mostly >> electrically and opto isolated from the SBJ. Plug into a USB and then >> power the SBJT. So USB to a small box, then cat5 to the SBJ. This is a >> small enough and fun project that it will probably just happen and fairly >> quickly - I need a few of these after the nightmare of the rackinjector >> (think of it as a working vacation). >> >> I've also had on the todo a NTP all in one appliance, probably in the SBJ >> or SB12 box. That same code would make it into the rackinjector and any >> followon similar products. There are quite a few things ahead of it on >> the roadmap though... >> >> On Wed, Sep 6, 2017 at 2:45 PM, George Skorup <george.sko...@cbcast.com> >> wrote: >> >>> Apparently there are USB sticks that are basically a GPS receiver and a >>> PL2303 for $30-40. So you get the date/time. Cool. Then they take the 1PPS >>> output to blink a f***ing LED. Really!? I was reading some blogs where >>> folks have opened them up and wired a super tiny jumper from 1PPS to DCD. >>> That was about 5-6 years ago using older SiRF receivers, too. Meh. >>> >>> A GPS+GLONASS SBJ basic and USB kit would be pretty cool. Could the USB >>> interface also power the box, up to say 20-25 feet? The other thing is, all >>> of the machines I'm working with have a serial port. So maybe just skip the >>> USB altogether? >>> >>> I was thinking, maybe take the daisy-chain output from a >>> SyncInjector/PowerInjector/RackInjector since those switch the pipe/box >>> to NMEA anyway, but I don't think I'd want a path from the tower-mounted >>> gear to server(s). And other funky stuff like noise making it into the >>> timing for the radios would be ungood. >>> >>> On 9/6/2017 2:10 AM, Forrest Christian (List Account) wrote: >>> >>> I could tell you how to wire a syncbox junior up to a usb port if you'd >>> like. Requires a TTL level usb to serial cable. >>> >>> I'd you wait a month or so until the gps+glonass version is out it well >>> even speak nmea. Heck, now I think about this it might make a good >>> product.... syncbox basic plus a USB dongle. >>> >>> On Sep 5, 2017 8:19 PM, "George Skorup" <george.sko...@cbcast.com> >>> wrote: >>> >>>> I've got a few CentOS machines running around the network doing various >>>> tasks, one being NTP for radios, routers, switches, etc. I've been having >>>> some issues with us.pool.ntp.org lately. I switched to time-(a,b,c,d). >>>> nist.gov. Apparently those are pretty busy. >>>> >>>> So is anyone else using GPS to feed NTPd? From what I've been reading, >>>> I guess I need a 1PPS capable receiver. Does that exist in a simple USB >>>> package? That would be ideal, preferably with an SMA female for an external >>>> antenna where needed. Looks like none of the cheap shit I'm finding on >>>> Amazon has PPS output. >>>> >>> >>> >> >> >> -- >> *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* >> Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 >> forre...@imach.com | http://www.packetflux.com >> <http://www.linkedin.com/in/fwchristian> >> <http://facebook.com/packetflux> <http://twitter.com/@packetflux> >> >> >> > > > -- > *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* > Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 > forre...@imach.com | http://www.packetflux.com > <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> > <http://twitter.com/@packetflux> > > >
