[time-nuts] More Galileo satellites available.

paul swed paulswedb at gmail.com
Sun Aug 5 15:09:02 EDT 2018


I remember various licensing issues in GNSS magazine.

On Sun, Aug 5, 2018 at 2:28 PM, Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> There are multi GNSS receivers out there. Some may do Galileo. That’s
> different than a multi-band (L1 / L2 / L5) receiver that will do Galileo.
> Since
> the band naming conventions change between systems, even working out
> what’s what is a bit exciting.
>
> Galileo is a bit more “closed source” than the other systems. If you want
> to do
> this or that, there’s a license fee. The more you want to do, the more it
> costs
> to license your design. Like the other systems, they also have
> restrictions on
> some signals ( = not for civilian use).
>
> Bob
>
> > On Aug 5, 2018, at 12:40 PM, paul swed <paulswedb at gmail.com> wrote:
> >
> > Bob you sure about that?
> > I could have sworn a multi-band receiver was on ebay for $32.
> > Made special in N Korea.
> > That said I guess I will stick with the always working simple GPS for
> now.
> >
> > On Sun, Aug 5, 2018 at 12:43 PM, Bob kb8tq <kb8tq at n1k.org> wrote:
> >
> >> Hi
> >>
> >>
> >>> On Aug 5, 2018, at 11:04 AM, paul swed <paulswedb at gmail.com> wrote:
> >>>
> >>> Mark
> >>> I have several questions.
> >>> Would we observe and be able to take advantage of the better clock.
> >>
> >> Right now … now so much
> >>
> >>> Or is
> >>> that lost in the various other transmission effects?
> >>
> >> Modeling matters a lot, they are still working the kinks out of that
> part
> >> of it.
> >>
> >>> If better what would it take to have a reference built up leveraging
> >> that?
> >>
> >> A multi-band receiver that picks up all three bands ( and is licensed to
> >> do so …
> >> a whole other issue) probably is the first link in the chain.
> >>
> >>> Perhaps a precision timing receiver.
> >>
> >> Right now, a “typical” multi band receiver is in the > $10K range. Some
> >> are
> >> two to three times that.
> >>
> >> Bob
> >>
> >>> I stop there because that opens up
> >>> several ways to leverage the 1PPS or perhaps the code clock.
> >>> Regards
> >>> Paul
> >>> WB8TSL
> >>>
> >>> On Sat, Aug 4, 2018 at 11:41 PM, Mark Sims <holrum at hotmail.com> wrote:
> >>>
> >>>> Three of the four Galileo satellites launched last December have been
> >>>> activated (passive hydrpren maser clocks) bringing the total number of
> >>>> usable sats to 17.  The fourth one is still "under comiisioning" .
> >> Four
> >>>> more sats were launched last month... hopefully it won't take them 8
> >> months
> >>>> to commission...
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