Sparkfun Electronics RTK mosaic-X5 User Manual page 15

• High-precision GNSS only works with multi-frequency
antennas. This means that GPS antenna you got in the
early 2000s with your TomTom is not going to work.
Please use the SparkFun L1/L2/L5 antenna provided in
the RTK mosaic-X5 kit.
• High-precision GNSS works best with a clear view of the
sky; it does not work indoors or near a window. GNSS
performance is generally not affected by clouds or
storms. Trees and buildings can degrade performance
but usually only in very thick canopies or very near tall
building walls. GNSS reception is very possible in dense
urban centers with skyscrapers but high-precision RTK
may be impossible.
• The mosaic-X5 reserves the IP (Internet Protocol)
subnet address 3 for its USB-C interface; this cannot be
changed. If your Ethernet or WiFi network is also using
subnet 3 (192.168.3.nnn), the mosaic-X5 may appear
to have a valid IP address but communication will
fail. Please change your Router configuration to use a
different subnet.
9
Common Gotchas