Stonex S9III Plus GNSS Receiver – User Manual
17
Charger
The charger can charge both batteries simultaneously. The lights of the
charger shows if the battery is being charged (red light CHARGE) or if it’s
already charged (green light FULL). Red light POWER shows if the charger is
powered on and there is also a light which turns on in case of too high
temperature (red light TEMP).
3.3. The antennas
S9III PLUS adopts a UHF all-direction transmitting and receiving antenna.
There are three different internal radio settings with different frequency range.
The available range are: 410-430 MHz, 430-450 MHz and 450-470 MHz. They
are suitable for field surveying, light and durable. The gain is 4 dBi, it was
recently improved with respect to the old model that was 2.15 dBi, leading to
an increase of the range.
Fig. 3.5 - Lithium-ion battery
Fig. 3.6 - S9III PLUS charger and adaptor
