3D Robotics

Radiolink SE100 GPS module for Pixhawk


Anybody know anything about this one? It's $35 from Roboshop:

  • 2.5dbI high gain and selectivity ceramic antenna
  • MMIC BGA715L7 from Infineon power amplify IC
  • SAWF (Surface acoustic wave filter) form Murata
  • HMC5983 from Honeywell geomagnetic

The Radiolink SE100 GPS Module for PixHawk exceed the limitation of IC sensitivity index from circuit schematic design to PCB placement.1 meters positional accuracy, positioning in 23 seconds and valley station keeping ability.


  • Positional Accuracy: 1m precision when working with concurrent GNSS, 2.5m precision when working with single GNSS
  • Velocity precision: 0.1m/s
  • Max height: 50000m
  • Max speed: 515m/s
  • Max acceleration: 4G
  • Max update rate: up to 18Hz
  • Sensitivity Tracking & Nav.: -167dBm; Reacquisition:-163dBm; Cold start:-151dBm; Hot start:-159dBm
  • Time to first fix: Cold start: 26s, Hot start: 1s
  • Connect ports
  • Power supply: voltage 3.3VDC+-5%, current 50~55mA


  • A.GPS UART interface, baud rate: 1.2K/4.8K/9.6K/19.2K/38.4K/57.6K/112.5K
  • B.Geomagnetic I2C interface
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  • I am finding this Radiolink module to be much better than my previous Chinese clone ublox M8N GPS module. Positional drift on the ground is within a metre with around 15 satellites. I hope this means I wont have to climb over fences and wade through fields of stinging nettles to retrieve my drone ever again.

  • GPS works fine, but have some trouble with configuring it.

    Trying to configure this module with u-center. Settings are stored after power off, but they are reset to default after some time (after few days when module is off).

    What could be wrong? What is correct way to configure them to make configuration stored?

  • Now installed, 20sats hdop 0.6.
    Keep's sat lock and looks like its working like other ublox modules.
  • I have this same gps waiting for installation after i finnish my hexa rebuild. I have coupple other m8n non brand units that have been working fine, so maybe its better to use one of them then?
  • Ordered 2 GPS and 1 of them is damage, also ordered Pixhawk from Radiolink (http://www.radiolink.com.cn/doce/product-detail-116.html) and the specktrum port has different connector. Din't work

    Radiolink PIXHAWK - RadioLink Electronic Limited
    flight Controller PIXHAWK
  • Heh, just ordered this prior to seeing these comments. Oh well.

  • After 4 flights with this GPS I'll add my disrecommendation to everyone else's.  The first 3 flights went fine, only problem was a little slow on the cold start...  maybe a lot slow, I never timed it exactly.  But it would at least eventually lock the expected number of satellites, at least 13 and usually 15 to 17.   Yesterday when I flew, inexplicably it would not acquire more than 8 satellites and it took some patience for me to get past "Prearm: GPS speed error 1.6 needs 1.5"   Life is too short, I'll spend a little more and replace it.  

  • If I had seen these comments I wouldn't have ordered it, but at first glance it looks good.  I ordered it from xt-xinte.com for $18.91 USD, took12 days to get here (Texas).   I just now opened it and plugged it up and it sees 17 sats, 0.7 hdop.  The prediction page at http://www.calsky.com/cs.cgi says at my current time and location with the elevation mask set to 10 degrees above the horizon I should see 16 sats.   As fast as I can boot my Pixhawk and connect to it it has warm-started.   So far, so good, I'll have it in a plane next week and we'll see how things go.

  • 3D Robotics

    I've now got one of these and can verify that it's total crap. 7 sats while the standard HobbyKing GPS gets 15 sats, with lower HDOP (.97 vs 1.7) and faster lock. Avoid.

  • Yes this is my gps from droteck is the best gps

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