Hi To be more precise, what you want is a L1/L2/L5 triple band antenna.
Bob > On Jan 21, 2019, at 11:32 AM, Bob kb8tq <[email protected]> wrote: > > Hi > > Based on the F9P data sheet, you will need an L1 / L2 antenna that is wide > enough > to get the Galileo E5B as well as the Glonass L1OF and L2OF bands. The gotcha > is that (so far) I have not found a gain number for the target antenna. As we > have > found on other modules, you do want to get the right gain. L1/L2 antennas > range > from 50+ db down to below 30 db. Simply tacking a pad on a 50 db antenna is > not > the best way to do things if you are in an urban area. > > There also is the issue of powering the antenna. It is not clear what sort of > antenna > bias circuit the SparkFun module has on it. If it simply is using the > module’s bias setup > that also could be an issue. Max Vcc on the module is 3.6V. The VCC_RF pin > can have > main Vcc - 0.1V max on it. If that *really* means that 3.3V is about it for > antenna bias, > that eliminates roughly 100% of all the used antennas out there. It also > eliminates a > number of the new ones. > > If you put in an external bias setup, there are a lot of antennas to pick > from on eBay. > They come and go. The used stuff generally will be 12V powered. It also is > likely > to have a pretty good data sheet on it. The new stuff from China seems to be > sold > by a variety of people who pop up for a while and then go away for a while. > Making > sure of what you are getting is a bit tough as a result. There are extensive > stories > in the archives ….. > > Bob > >> On Jan 21, 2019, at 10:21 AM, Graham / KE9H <[email protected]> wrote: >> >> What kind of antenna is needed to simultaneously hear all of the systems at >> once? >> My PCTel GPS antenna has a filter that limits it to only the US GPS system. >> >> --- Graham >> >> == >> >> On Mon, Jan 21, 2019 at 4:01 AM Dustin Marquess <[email protected]> wrote: >> >>> If DigiKey's pricing is accurate, the ZED-F9T is $13.89 more than a >>> ZED-F9P. I would have gladly paid $14 more for a version of the >>> SparkFun board using the T(iming) version instead :(. >>> >>> On Mon, Jan 21, 2019 at 12:10 AM Bob kb8tq <[email protected]> wrote: >>>> >>>> Hi >>>> >>>> From a *very* quick read of the doc’s: >>>> >>>> 1) The device *does* have a position hold capability >>>> >>>> 2) There is some level of data on the time pulse. It it only 1 ns >>> resolution? >>>> >>>> 3) It does appear to support Galileo and Glonas in addition to GPS. >>>> >>>> 4) It is clearly multi-band for GPS. It is unclear from a quick read if >>> it is multi-band for the other systems. >>>> >>>> 5) If you get one, make sure you have the RF cable connector it needs. >>>> >>>> 6) I have not (yet) found a recommendation for the antenna gain. >>>> >>>> Again, all from a quick read …. >>>> >>>> Bob >>>> >>>>> On Jan 20, 2019, at 5:42 PM, Mark Sims <[email protected]> wrote: >>>>> >>>>> Sparkfun is now selling the Ublox F9P L1/L2 GPS receiver module on a >>> board ($219). The F9P supports GPS/Galileo/Glonass/Beidou and tracks L1/L2 >>> data. It outputs carrier phase data and has survey-in and fixed position >>> support along with RTK support (10 mm accuracy). Looks like the F9P has 1 >>> time pulse output. >>>>> _______________________________________________ >>>>> time-nuts mailing list -- [email protected] >>>>> To unsubscribe, go to >>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >>>>> and follow the instructions there. >>>> >>>> >>>> _______________________________________________ >>>> time-nuts mailing list -- [email protected] >>>> To unsubscribe, go to >>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >>>> and follow the instructions there. >>> >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >>> and follow the instructions there. >>> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
