User's Manual

Page | 7
Proprietary Information,
Intelligent Automation Incorporated
When radio rebooted, you should login again (login: root, password: root), and perform
reset twice.
7 Transmit Enable/Disable
We can set a parameter to enable and disable transmission. The radio configuration is set
in the following file: /etc/sparrow_cfg.json. In order to change any configuration, we can
edit this file and reboot the radio.
We have to open /etc/sparrow_cfg.json file with vi command and set tx_enable parameter
to 0 or 1. 1 to enable and 0 to disable radio transmission. After editing, we should close
the file with :wq command and reboot the system.
8 Changing Transmit Power
Gallium radio we can operate in 2 power levels. We have 2 stages of power amplifier that
depending of settings can generate either 23 dBm or 30 dBm output power. We can
change this power both from the configuration file at : /etc.sparrow_cfg.json or by
mechanically switching the rotary switch to position 2 from 1.
In order to change the power setting, we can edit this file and reboot the radio. After the
boot up, the changing configuration will take effect.
Here’s the instruction to modify the transmit power via configuration file:
Open the configuration file with vi command. Scroll to “tx1_pa_en” and set it to either
“false” or “true”. With “true”, we select the highest power at 30 dBm an with “false” the
power will change to 23 dBm.