Radio Waves and Communication History

Which scientist is credited with the initial discovery of radio waves in 1880?

In 1898, the first radio link between France and England was established by which inventor?

The superheterodyne radio receiver, a significant advancement in radio technology, was developed in 1918 by which engineer?

In which year did Samuel Morse introduce the first workable telegraph?

Who developed a foundational relationship between bandwidth, transmission time, and information capacity at Bell Telephone Laboratories in 1928?

Claude Shannon's landmark paper in 1948 linked a communication channel's information capacity to which two parameters?

What is the formula for calculating power gain in decibels?

Which unit is used to express relative gains and losses in electronic circuits, especially for describing signal and noise relationships?

What does dBm represent as a measurement?

Which sequence accurately describes the fundamental components of electronic communication?

What type of signals are continuously changing voltages or currents, exemplified by sine and cosine waves?

Voltages or currents that change in discrete steps or levels are classified as what type of signals?

An absolute power ratio of 0.00008 is equivalent to how many dB?

What component of a communication system is responsible for carrying signals between a transmitter and a receiver?

The process of modifying one or more properties of an analog carrier signal in proportion to an information signal is known as what?

What term describes the process of transmitting digital pulses between two or more points in a communications system?

The transmission of digitally modulated analog carriers between two or more points defines which type of communication?

If an analog information signal modulates the frequency of a carrier signal, what type of modulation is produced?

In what modulation type does the information signal vary the phase angle of the carrier signal proportionally?

What process reverses modulation to retrieve the original information signal from the modulated carrier?