Re: Cost-effectivenesss of highly-accurate clocks for NTP

> I clearly need three of those maser things for my network. Gives new meaning to the phrase "Set and forget". :) -mel beckman > On May 14, 2016, at 12:40 PM, Baldur Norddahl > wrote: > >> On 13 May 2016 at 23:01, Baldur Norddahl wrote:

Re: Cost-effectivenesss of highly-accurate clocks for NTP

On 13 May 2016 at 23:01, Baldur Norddahl wrote: > Ok how many hours or days of holdover can you expect from quartz, > temperature compensated quartz or Rubidium? Should we calculate holdover as > time until drift is more than 1 millisecond, 10 ms or more for NTP >

Re: B5-Lite

For that distance link you could use to 300m 45 degree slant AF5x antenna Regards, Hal Ponton Senior Network Engineer Buzcom / FibreWiFi > On 14 May 2016, at 18:43, Jared Mauch wrote: > > >> On May 14, 2016, at 6:07 AM, Matt Hoppes

Re: B5-Lite

> On May 14, 2016, at 6:07 AM, Matt Hoppes > wrote: > > Jared - why not go to Ubiquiti AC gear if you need some more speed and > something more modern? Concern is with the UBNT AC 500mm dish and wind loading on the tower even with radome. b5 is ~450mm and

RE: B5-Lite

AF24HD can do full duplex 1Gbps On May 14, 2016 12:17 PM, "Eric Rogers" wrote: > If it is 3-4KM, I would definitely use the AF24 (24GHz) because it gives > you 750M/750M Full duplex. For longer, or a backup link, I would use the > AF5X (not AF5) instead of the B5.

RE: B5-Lite

If it is 3-4KM, I would definitely use the AF24 (24GHz) because it gives you 750M/750M Full duplex. For longer, or a backup link, I would use the AF5X (not AF5) instead of the B5. That way you have 750M full duplex during most days with the AF24, and on a strong rain if you use OSPF, the AF5X

Re: Cost-effectivenesss of highly-accurate clocks for NTP

On 05/13/2016 03:39 PM, Eric S. Raymond wrote: Traditionally dedicated time-source hardware like rubidium-oscillator GPSDOs is sold on accuracy, but for WAN time service their real draw is long holdover time with lower frequency drift that you get from the cheap, non-temperature-compensated

Re: NIST NTP servers

On 05/13/2016 04:38 PM, Mel Beckman wrote: But another key consideration beyond accuracy is the reliability of a server's GPS constellation view. If you can lose GPS sync for an hour or more (not uncommon in terrain-locked locations), the NTP time will go free-running and could drift quite a

Re: B5-Lite

AF5X. The AF5 is not all that good (integrated small dishes for fdx, yuck). The real Josh is still waiting on UbntChuck to do a ptmp sync product. At least we're 2/3 of the way there :) Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On May 14,

Re: B5-Lite

I didn't think the AF5 was much cheaper than an AF24 and I'd much rather be up in the 24GHz band and out of any contention in 5GHz. *Spencer Ryan* | Senior Systems Administrator | sr...@arbor.net *Arbor Networks* +1.734.794.5033 (d) | +1.734.846.2053 (m) www.arbornetworks.com On Sat, May 14,

Re: B5-Lite

WHAT HAVE YOU DONE WITH THE REAL JOSH LUTHMAN?! On May 14, 2016 8:33 AM, "Josh Luthman" wrote: > AF5X is hard to beat and cheaper... > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > On May 14, 2016 9:29

Re: B5-Lite

AF5X is hard to beat and cheaper... Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On May 14, 2016 9:29 AM, "Jared Mauch" wrote: > Ouch. Was also looking at b5 but $1400 for a pair is a bit steep if your > effective range

Re: B5-Lite

Ouch. Was also looking at b5 but $1400 for a pair is a bit steep if your effective range won't support a "short" 3-4km link. Trying to bridge the gap, and UBNT has their pluses and minuses. Maybe AF5X instead I guess. Thanks! Jared Mauch > On May 14, 2016, at 8:31 AM, Hal Ponton

Re: B5-Lite

We've deployed 2 B5 links into production, the newer firmware seems to have fixed the issues we saw in the links when we first tested them. We have a very rural customer where two hops are needed around the site. We're lucky in that we had two 80MHz channels free. We see around 350Mbps both

Re: B5-Lite

Jared - why not go to Ubiquiti AC gear if you need some more speed and something more modern? > On May 14, 2016, at 01:43, Eric C. Miller wrote: > > B5c is the only product that I've had much success with from Mimosa. > > The B5Lite is a cheap plastic shell and, and it