Time-nuts! A while back there was a discussion of cheap Chinese GPS survey antennas.
I purchased a TOPGNSS model GN-GGB0710.. Took about a month to arrive. They claim GPS L1 L2 GLONASS G1 G2 BDS B1 B2 B3 and Galileo. I bought it on aliexpress for $75 inc. shipping. https://www.aliexpress.com/item/NEW-3-3-18V-High-precision-high-gain-measurement-GNSS-GPS-GLONASS-BDS-Cors-rtk-GNSS/32815576155.html Specs are here: http://www.topgnss.com/gnssmodule/showproduct.php?lang=en&id=59 Antenna connection is a simple TNC connector and mounts on a standard 5/8-11 thread. They say 3.3 to 18V. I'm running it on 5V. Construction quality seems fine. Just as in the picture. After a few hours of use I can say it is a nice little antenna. I seem to be getting good strong L1, L2, L5 and GALILEO signals on all elevations and azimuths. A gross comparison to my Trimble 22020 shows the two as roughly comparable. Except I get stronger GALILEO on the TOPGNSS. I have no way to push either antenna to the limit. Many thanks to the list for some fine product suggestions. Add this one to the list. RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can’t measure it, you can’t improve it." - Lord Kelvin _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
