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This is a fantastic GPS card. It has a micro-USB for power/interface and also pins for interfacing with a Raspberry Pi including a PPS pulse-per-second signal pin for super-accurate time. I have used three of these boards for Raspberry Pi based network time servers. I have to take them outside for the first power-up fix but after that the built-in antenna works fine indoors for a good 3D fix and accurate time. The optional female SMA antenna connector is a nice bonus in case you need to use an external antenna simply solder it in place.
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Really poor sensitivity. While a similar 6M device with identical looking antenna locks in a few seconds and tracks at least 10 satellites indoors. This device do not even detect a single satellite. I managed to get it to track 2-3 satellites by taping it to a window, but even after several hours did it not manage to produce any position. So buy other devices at same pricelevel, these are only good at delivering time, and only when outdoors or in a window.... ( I bought two devices, and they both show the same behaviour.). The similar device I compare with is the GY-NEO6MV2 Flight Controller NEO-6M GPS Module For Arduino EEPROM APM 2.5 ( 192163653482 ) which I bought in 2017. 6M based instead, and the antenna is connected using a couple of cm of cable instead of being mounted directly on the board.Read full review
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Works perfectly, good value for the money. Very glad to have bought it
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Working properly and easy to use
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Works well . The time signal is easily adjusted to my needs
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