Comparison of LoRa Ra-01H Communication Using Rubber Duck Antenna and Spring Antenna with a Frequency Range of 803 – 930 MHz

LoRa (Long Range) communication, a wireless technology known for its ability to transmit data over extended distances with low power consumption, is gaining prominence in various applications. In this research, the Ra-01H series LoRa module, featuring the RF chip SX1276 operating in the frequency range of 803–930 MHz, is utilized. To enhance communication capabilities, the study explores the impact of different antennas, specifically the Rubber Duck 3dBi antenna and the Spring antenna. The experimentation involves comprehensive measurements, focusing on key indicators such as RSSI (Received Signal Strength Indicator), SNR (Signal to Noise Ratio), distance, and obstacle considerations. Given Indonesia's utilization of the AS923 frequency band (915–928 MHz) within the Asian region, testing is conducted under these frequency parameters. The experimental setup involves equidistant configurations for both antennas, providing a controlled environment for comparative analysis. Results reveal notable differences in signal reception between the Rubber Duck and Spring antennas. The Rubber Duck antenna exhibits superior performance, achieving RSSI values closer to zero and yielding an average RSSI value of -84.5 dBm. In contrast, the Spring antenna records a comparatively lower average RSSI value of -106 dBm. This disparity underscores the significance of antenna selection in optimizing LoRa communication range and reliability. The findings contribute valuable insights for practitioners and researchers seeking to finetune LoRa systems, emphasizing the practical implications of antenna choices on data transmission success and signal parameters. This study underscores the importance of antenna considerations for achieving optimal performance in diverse deployment scenarios.