Radio and Electronics (DED Philippinen, 66 p.): 4. RADIOWAVES

Radio and Electronics (DED Philippinen, 66 p.)

4. RADIOWAVES

		(introduction...)
		4.1. ORIGIN OF RADIOWAVES
		4.2. PARAMETERS OF ELECTROMAGNETIC WAVES
		4.3. PROPAGATION OF RADIOWAVES
		4.4. SPECTRUM OF RADIOWAVES AND BANDS OF RADIOWAVES