The GPGSV is the sentence that reports satellites' SNR. See also: <http://www.gpsinformation.org/dale/nmea.htm#GSV>
On Mon, Nov 10, 2014 at 10:59 AM, Lizeth Norman <[email protected]> wrote: > Rick, > NMEA 0138 is a standard "language". Yes it does output the signal > strength and visible sats, although I don't remember which output > sentences give that data. > I haven't looked at the serial output, so I don't know which sentences > are supported. Probably good to look at the documentation for the gps > chip. > Norm n3ykf > > > On Mon, Nov 10, 2014 at 12:54 AM, Rick Thomas <[email protected]> wrote: >> Hi Lizeth, >> >> I’ve noticed that it’s very quick to come to a preliminary lock — though the >> lock is often exactly 1.000 sec off for 5-10 minutes. Eventually that fixes >> itself. >> >> Do you know if the NMEA output (once enabled, and once there is a listener >> to record it) would tell which satellites are visible and at what signal >> strength? >> >> Mine is also just for home use for the time being. I’m planning to get >> another one for use at the community radio station I volunteer at. >> >> They are cheap enough that, with a grant from e.g. the NSF, we could get a >> bunch of them and scatter them all over the Internet. With enough of them >> and some open software for monitoring, we could map one-way (as opposed to >> round-trip) times on various Internet routes — thus giving some hard data on >> route asymmetry. This might prove to be interesting or even useful in >> diagnosing problems. >> >> Just a thought… >> >> Rick >> >> On Nov 9, 2014, at 2:07 PM, Lizeth Norman <[email protected]> wrote: >> >>> Reading the manual, (page 8) the device can be set up to output NMEA >>> over the serial port. There are a few different pieces of code to >>> display that data. >>> Have had mine two weeks. It got gps lock before I could point the >>> browser at it's ip. >>> Just syncing a bunch of cameras as well being the "house" time standard. >>> >>> On Sun, Nov 9, 2014 at 4:49 PM, Rick Thomas <[email protected]> wrote: >>>> >>>> Right. I did the reset to factory defaults jumper thing and it came back >>>> to life. I’m using it now with the default setup. >>>> >>>> I got a reply from somebody named Doug at css-timemachines suggesting that >>>> I use a different browser (I had been using Safari on my desktop Mac) so I >>>> switched to Chrome (still on the Mac) and now it seems to be a bit more >>>> friendly. >>>> >>>> In particular, it reports: >>>> >>>> Signal Strength: Satellite 1: 32 dB, Satellite 2: 31 dB, Satellite 3: >>>> 30 dB >>>> >>>> Can anybody tell if that’s good or bad? I have the antenna taped up >>>> against a window with a good view of the sky to the North-East: not too >>>> many trees in the way of a clear view out over the ocean — but somewhat >>>> occluded to the North-West: a low tree-covered ridge up to about 15 >>>> degrees above the horizon — and the bulk of the house in the way to the >>>> South. Is there a better way? >>>> >>>> I’ll report here as I explore further over the next week. >>>> >>>> Rick >>>> >>>> On Nov 9, 2014, at 2:21 AM, David C. Partridge >>>> <[email protected]> wrote: >>>> >>>>>> If you’re referring to this: >>>>> >>>>> I think he’s referring to section 4.3 "Resetting to Factory Defaults" >>>> >>>>>> You also have to reboot after a PW change ... >>>>> >>>>> Regards, >>>>> David Partridge >>>> >>>> _______________________________________________ >>>> 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. >>> >> >> _______________________________________________ >> 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. _______________________________________________ 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.
