1. Is radio the transmission of signals through space by modulation of electromagnetic waves?<br/><br/>2. Does radio-wave pass through the vacuum?<br/><br/>3. Was radio invented by Edison?<br/><br/>4. Does a radio system consist essentially of transmitter and receiver?<br/><br/>5. Will the data obtained be processed by the system?<br/><br/>6. Does the received data processed electronically?<br/><br/>7. Can the exact location be determined by electronic geometry?<br/><br/>8. Is scope a cathode-ray tube?<br/><br/>Thanks in advance