Improving reception from a transmitter operating at 1GHz can be achieved through better antennas and low-noise amplifiers (LNA), rather than simply decreasing the transmission frequency. In specific environments like underwater, ultra-low frequencies (ULF) are necessary due to absorption by water, while higher frequencies face absorption challenges from atmospheric conditions. The effectiveness of a transmission system also depends on factors such as transmitter power, modulation type, distance to the receiver, and whether the receiver is stationary or mobile. Lower frequencies can cover longer distances but require larger antennas, making the choice of frequency a trade-off based on the application. Understanding these variables is crucial for optimizing the transmission link, especially in unique scenarios like tracking wildlife.