The Antarctic is vast continent without any communication or power infrastructure. However, many countries operate scientific experiments in the Antarctic and desire lowpower long-range data communication for their scientific measurement setups. Currently, expensive satellite communication via Argos or Inmarsat is often employed. In case of limited data rate, sub-GHz frequency bands offer excellent radio wave propagation to provide ground-based communication links. The longer wavelength in these bands results in less path loss for a similar range, compared to microwave links at GHz frequencies. In a recent evolution, LoRa networks are deployed, allowing a larger link budget thanks to chirp spread spectrum modulation. In this paper, a number of dual band mobile-to-base-station measurements are described for the 434 and 868 MHz frequency bands. The channel measurements are analyzed for signal to noise ratio and packet loss, as recorded for different practical trajectories. The relation between packet loss and signal to noise ratio is also provided for practical applications in mobile to base station communication links.