[time-nuts] Re: What GNSS module to buy for a good time reference?

[Mete Balci]

I also tried using F9T in different ways, and because of my poor antenna
location it was not successful but the most easy to setup and understand
for me was real-time PPP with BKG Ntrip Client. If I remember right, it can
output RTCM and this can be used directly.

I also have Mosaic-X5, and it is naturally better than ublox (~4x more
expensive) but I think the sensitivity of ublox is higher, so with a poor
antenna location ublox is working actually better.

At the end the best solution for my poor location was using the GPS in the
mobile phone, because of AGPS I think, it seems to work better and can get
<10m. I also checked local so-called height control points and surveying
maps to get close to 1m.

The cheapest proper antenna I could find for multi-band and also with
parameters for RINEX was Tallysman TW7972, which has calibration files at
geodesy at noaa.

Mete

On Mon, 3 Jul 2023 at 01:24, Lux, Jim via time-nuts <
time-nuts at lists.febo.com> wrote:

> On 7/2/23 9:45 AM, Bob Camp via time-nuts wrote:
> > Hi
> >
> > At the moment NRCan only does corrections on GPS and Glonass. Will they
> add more systems
> > in the future? Who knows ….. Last time I checked the US correction
> services only ran GPS.
> > It’s been a few years since I used them, that may have changed.
> >
> > Bob
>
>
> JPL runs all GNSS constellations. On SunRISE we were planning on
> augmenting GPS with GLONASS, but we ran out of time/money to implement
> that in the receiver. And had we a receiver that could do GALILEO we
> could have run that. Not so sure about BEIDOU, given the "thou shalt not
> collaborate with Chinese" laws (Wolf amendment).  I suppose there's no
> collaboration - we get the signals, we process them, we determine an
> orbit, and then we can process it.
>
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