On the Icom IC-7600, this control adjusts the output power of the radio’s transmitter at the initial stage of the signal chain. It essentially regulates the signal level entering the power amplifier. Proper adjustment prevents overdrive and distortion while ensuring efficient power output. Consider it similar to controlling the “volume” of the signal before it’s amplified to full power.
Accurate regulation of this initial signal strength is crucial for achieving clean and clear transmissions. Excessive levels can lead to splatter (unwanted signal emissions on adjacent frequencies), reduced intelligibility, and potential damage to the transmitter’s final amplifier stages. Conversely, insufficient levels result in weak signals and reduced communication range. This control allows operators to optimize the signal for specific operating conditions and antenna systems, maximizing efficiency and minimizing interference.
