Across:
2. selects the frequency of a station desired
3. converts sound wave to audio-frequency signal
5. transmits and receives radio wave
6. EM wave that has the longest wavelength
10. increases energy of modulated carrier wave
Down:
1. extracts AF signal from modulated carrier wave
4. produces radio frequency carrier wave
7. EM wave with highest frequency
8. converts AF signal to sound energy
9. known as heat rays​