User Manual for David30 GNSS Receiver v2.0
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power. It may cause scald if the surface of the machine is touched directly.
Please pay special attention.
6.7.3 Antenna Installation
Whether the antenna is properly installed and erected would seriously affect
the transmission distance of the radio, hence the correct connection and
installation of the antenna is of high importance.
1) It is strictly forbidden to use a damaged antenna. The high gain radio
antenna is in the designated antenna for 28W radio. Using an antenna that
is not strictly matched with this radio would result in a shortened
transmission distance for the radio, and it is possible to damage the radio if
the mismatch is particularly serious.
2) The original antenna of this radio is strictly matched with this radio, and the
performance meets the requirements of this radio. The original antenna of
this radio would better play the performance of this radio.
3) Under normal circumstances, the height of the antenna installed from the
ground would significantly increase the transmission distance and improve
the transmission effect.
4) Carefully check the connection of the antenna, feeder, connector and the
components of the radio to ensure well contact and reliable connection
between the antenna and the connector of the radio.