Hi
Again, this is why the interest in “how the heck did they accomplish it? With the claim of microsecond level performance, they must have run into all these issues. ==== Just a note: any time I want to do anything that matters, I put it on 5 GHz. There are still issues, but not quite as many. The data I presented is from a 5 GHz link. There’s also data over the same time period showing LAN pings all running below 1 ms for the same 24 hour period. The random delay bumps are WiFi specific. Bob > On Jan 15, 2017, at 12:51 AM, Bill Hawkins <[email protected]> wrote: > > > I haven't read the entire thread, but this may be relevant. If not, you > know where to find the delete key. > > I live in a life care community - one of 450 people in 300 apartments on > 3 floors. When I moved in a year ago, I could get Internet from the > house cable, and they provided the modem. I bought wired and wireless > 802.11n dual band routers for two apartments, a two bedroom for us and > an alcove for my shop. There was plenty of noise from other such > routers, but no problem within an apartment. I couldn't use a wireless > keyboard, though. The cursor wandered around with the noise. > > Last month, a company experienced in wiring hotels for wireless put DSL > to RJ-45 and 11n wireless access points in each apartment on the second > floor, adding 100 transmitters to the mix. DSL with existing phone > wiring was far cheaper than running new cable. The intent was to provide > universal public Wi-Fi for the children of the residents. > > They might as well have installed 100 jammers. There were complaints of > unusable cordless phones (most in the 2.4 GHz range) and lost Wi-Fi > connections that simply reverted to the default IP address range and > failed to reconnect. > > I got a home copy (this is my home) of InSSIDer software and surveyed > the halls at 2.4 GHz with a Windows 7 laptop (you need a larger screen > to see the signal distribution) I could see 10 to 20 of the new access > points, as well as the occasional excursion to -10 dbm (top of scale) as > nearby routers and printers kicked in. Great stuff. > > There are environments where time sync with Wi-Fi hasn't got a chance. > > Jim Lux was looking for a COTS solution to time sync, and this might > work in a controlled environment. > > Don't even think about consumer radio clocks that sync from unknown > Wi-Fi environments. > > Bill Hawkins (John Hawkins son) > [email protected] > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
