[time-nuts] Chinese GPS Survey Antenna

Gary E. Miller gem at rellim.com
Wed Apr 11 00:11:14 EDT 2018


A while back there was a discussion of cheap Chinese GPS survey

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.


Specs are here:


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.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at 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

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