Are you guys saying that although the units are advertised as supporting two systems you are actually getting 3 (GPS + Galileo + Beidou)?
I could be wrong, but I think the setting NMEA protocol to v4.1 enables the position fix flags for Galileo and BeiDou to be sent out of the receiver, but does not affect the Navigation input to the receiver. Regardless, I found that little tidbit of info in Sec 31.1.3 of the Protocol manual, now u-center shows me all the tracked SV's. In order for the BG7TBL MCU to run and update the LCD, I had to set the Main Talker ID to GPS, the MCU does not like the extra flags.
Edit: I had to set the main talker ID to GPS for my older 2017-12 version, the newer 2018-06 does not care and can be left to automatic, this is nice as u-center and LH will properly show the Galileo and BeiDou.
I am using a narrow band L1 Timing antenna now. Going to swap it out for a multiband GNSS antenna, although the L1 narrow band antenna does seem to be receiving Galileo well. Right now I have the GNSS types set for GPS, SBAS, and Galileo.
Edit: Now using a PCTEL GNSS multi band antenna and see BeiDou, GLONAS and Galileo;
https://www.pctel.com/antenna-product/global-gnss-timing-reference-antenna-gnss1-tmg-26n/
How many Beidou sats are you getting at once? I have skytraq GPS - several years old that supports beidou. Usually I only get one beidou sat at any time but I have not changed the mode and it is available. I find that when it is receiving beidou the position becomes rock solid stable. I am using it with a standard ceramic GPS antenna with no LNA, just a passive Taoglas ceramic patch antenna on a small ground plane (an old DVD) The Beidou does add positional stability, quite a bit. But once its been on for awhile it is stable all the time. Iguess what the beidou sats effect is greatly reducing the time it takes for the 3d fix to calm down in all three directions.
EDIT: BTW I have the GPS1-TMG-26N which looks identical to yours. It will receive GLONASS which is not far from GPS, just a tiny bit higher. I am currently using that with my GPSDO 24/7
I could be wrong, but I think the setting NMEA protocol to v4.1 enables the position fix flags for Galileo and BeiDou to be sent out of the receiver, but does not affect the Navigation input to the receiver. Regardless, I found that little tidbit of info in Sec 31.1.3 of the Protocol manual, now u-center shows me all the tracked SV's. In order for the BG7TBL MCU to run and update the LCD, I had to set the Main Talker ID to GPS, the MCU does not like the extra flags.
Edit: I had to set the main talker ID to GPS for my older 2017-12 version, the newer 2018-06 does not care and can be left to automatic, this is nice as u-center and LH will properly show the Galileo and BeiDou.
I am using a narrow band L1 Timing antenna now. Going to swap it out for a multiband GNSS antenna, although the L1 narrow band antenna does seem to be receiving Galileo well. Right now I have the GNSS types set for GPS, SBAS, and Galileo.
Edit: Now using a PCTEL GNSS multi band antenna and see BeiDou, GLONAS and Galileo;
https://www.pctel.com/antenna-product/global-gnss-timing-reference-antenna-gnss1-tmg-26n/
How many Beidou sats are you getting at once? I have skytraq GPS - several years old that supports beidou. Usually I only get one beidou sat at any time but I have not changed the mode and it is available. I find that when it is receiving beidou the position becomes rock solid stable. I am using it with a standard ceramic GPS antenna with no LNA, just a passive Taoglas ceramic patch antenna on a small ground plane (an old DVD) The Beidou does add positional stability, quite a bit. But once its been on for awhile it is stable all the time. I guess what the beidou sats effect is greatly reducing the time it takes for the 3d fix to calm down in all three directions.
EDIT: BTW I have the GPS1-TMG-26N which looks identical to yours. It will receive GLONASS which is not far from GPS, just a tiny bit higher. I am currently using that with my GPSDO 24/7
I could be wrong, but I think the setting NMEA protocol to v4.1 enables the position fix flags for Galileo and BeiDou to be sent out of the receiver, but does not affect the Navigation input to the receiver. Regardless, I found that little tidbit of info in Sec 31.1.3 of the Protocol manual, now u-center shows me all the tracked SV's. In order for the BG7TBL MCU to run and update the LCD, I had to set the Main Talker ID to GPS, the MCU does not like the extra flags.
Edit: I had to set the main talker ID to GPS for my older 2017-12 version, the newer 2018-06 does not care and can be left to automatic, this is nice as u-center and LH will properly show the Galileo and BeiDou.
I am using a narrow band L1 Timing antenna now. Going to swap it out for a multiband GNSS antenna, although the L1 narrow band antenna does seem to be receiving Galileo well. Right now I have the GNSS types set for GPS, SBAS, and Galileo.
Edit: Now using a PCTEL GNSS multi band antenna and see BeiDou, GLONAS and Galileo;
https://www.pctel.com/antenna-product/global-gnss-timing-reference-antenna-gnss1-tmg-26n/
The GPS-TMG-26N wont see BeiDou, you need the GNSS1-TMG-26N which will. I see 8-12 BeiDou with the GNSS antenna.
How many Beidou sats are you getting at once? I have skytraq GPS - several years old that supports beidou. Usually I only get one beidou sat at any time but I have not changed the mode and it is available. I find that when it is receiving beidou the position becomes rock solid stable. I am using it with a standard ceramic GPS antenna with no LNA, just a passive Taoglas ceramic patch antenna on a small ground plane (an old DVD) The Beidou does add positional stability, quite a bit. But once its been on for awhile it is stable all the time. I guess what the beidou sats effect is greatly reducing the time it takes for the 3d fix to calm down in all three directions.
EDIT: BTW I have the GPS1-TMG-26N which looks identical to yours. It will receive GLONASS which is not far from GPS, just a tiny bit higher. I am currently using that with my GPSDO 24/7
I could be wrong, but I think the setting NMEA protocol to v4.1 enables the position fix flags for Galileo and BeiDou to be sent out of the receiver, but does not affect the Navigation input to the receiver. Regardless, I found that little tidbit of info in Sec 31.1.3 of the Protocol manual, now u-center shows me all the tracked SV's. In order for the BG7TBL MCU to run and update the LCD, I had to set the Main Talker ID to GPS, the MCU does not like the extra flags.
Edit: I had to set the main talker ID to GPS for my older 2017-12 version, the newer 2018-06 does not care and can be left to automatic, this is nice as u-center and LH will properly show the Galileo and BeiDou.
I am using a narrow band L1 Timing antenna now. Going to swap it out for a multiband GNSS antenna, although the L1 narrow band antenna does seem to be receiving Galileo well. Right now I have the GNSS types set for GPS, SBAS, and Galileo.
Edit: Now using a PCTEL GNSS multi band antenna and see BeiDou, GLONAS and Galileo;
https://www.pctel.com/antenna-product/global-gnss-timing-reference-antenna-gnss1-tmg-26n/
The GPS-TMG-26N wont see BeiDou, you need the GNSS1-TMG-26N which will. I see 8-12 BeiDou with the GNSS antenna.
I'm in the Western Hemisphere, at approximately 41 N 74 west Are you in Asia/Australia or Europe? I'd expect you would get more satellites there.
The GNSSRadar web site shows how many sats are visible from a given spot. It's telling me I can only receive one Beidou satellite here. They are geosychronous SVs Also, my receiver was made in 2015. So its not at all new. What kind of ublox chip does the BG7TBL contain under the (tape?) ?
http://www.taroz.net/GNSS-Radar.html
How many Beidou sats are you getting at once?
How many Beidou sats are you getting at once?
I haven't looked at this forum for a while, but I happened to be looking at Beidou + Galileo last night, and remember counting 9 Beidou and 8 Galileo after the unit had been on for an hour or so, here in Northern England. U-Center was configured to allow 12 max from each system.
Regards,
Dave
Wich receiver do you use? Because if you have the simple BG7TBL GPSDO you easely can change the U-Blox module.
https://www.eevblog.com/forum/testgear/bg7tbl-gpsdo-master-reference/msg2493726/#msg2493726
With a BG7TBL, which I think has a U-blox 7 receiver, when using u-center, I'm trying to figure out how to use the GNSS config.
Note that this only changes the configuration in the volatile memory of the chip, so changes are lost after a reboot.
Hello, Hi, I just bought a unit like this and I am having a hard time getting the GPS to sync. Where do you have the antenna placed? It gives me a long time to synchronize and even many days it doesn't. Do you use the included antenna? Thank you very much, regards
Gerardo