🔍 Key Concepts

• Radio Frequency (RF) basics – what a carrier frequency is and what "intelligence" or "information" means in communications • Modulation vs. tuning/power settings – how adding information to a signal differs from simply choosing a frequency or power level • The role of mixers in receivers vs. the role of modulation in transmitters

💭 Think About

• Ask yourself: in a basic transmitter, at what stage does the voice or data actually get placed onto (or varied onto) the RF carrier? Which term describes that process? • Look at each choice and decide: is this describing how we prepare a carrier, how we add information to it, how we set system parameters, or how we process a received signal? • Think about common types like AM (Amplitude Modulation) and FM (Frequency Modulation): what, exactly, is being "modulated" in those names?

✅ Before You Answer

• Identify which option clearly involves combining information/intelligence with a carrier frequency • Eliminate any choices that only describe power level, bandwidth setting, or frequency conversion in a mixer without explicitly involving adding information • Confirm that the definition you pick would apply to familiar cases like AM and FM radio communications