Electronics - Lessons

Formulas for Dipole and Vertical Antennas Half-wave antenna in free space (15006 / F) cm Practical half-wave antenna (up to 30 MHz) (14274 / F) cm Half-wave antenna (50 to 144 MHz) (14030 / F) cm Half-wave antenna (above 144 MHz) (14233 / F) cm Quarter-wave antenna (7137 / F) cm Full-wave antenna length (30653 / F) cm Enter frequency (MHz): Calculate ...

RADIO WAVES. PRINCIPLES OF RECEPTION AND TRANSMISSION OF RADIO SIGNALS Here comes the end of our introductory basic course of 10 lessons. I hope you have reached the 10th lesson by honestly completing all those simple tasks and experiments that were offered in the practical work. This final lesson will be entirely devoted to oscillatory processes, studying the nature of acoustic and electromagnetic waves, and, accordingly, the basics of receiving and transmitting electromagnetic waves (radio reception - transmission). The lesson is very dense, so I advise you to treat the assimilation of information very responsibly, also because it reveals the basic fundamentals and aspects necessary for further development and understanding of the processes occurring in transceivers. The word radio comes from the Latin radiare - to radiate or emit rays . A broadcasting station, for example, like the Sun, radiates radio waves in all directions along radii. Only certain special-purpose r...