This page is description how to disassemble partly potted Lion tracker for Antenna tuning.
Lion tracker comes with assembled PCB, soldered EMC shield and soldered battery.
LoRa_setTxContinuousWave_vswr
- Frequency scan from 800MHz to 900MHz
LoRa_setTxContinuousWave_vswr_tune
- DTC scan at 868MHz from 0 to 32 (1,4pF to 13,61)
LoRaWAN_DeepSleep
Every time battery is soldered to board a battery protection circuit needs to be activated.
Make contact from battery negative terminal to EMC shield to activate device.
Connect USB<->UART adapter to device pin as shown in picture above.
All design can be found on github https://github.com/IRNAS/smartparks-lion-tracker-hardware