Question

suppose you wish to transmit an electronic signal in audio frequency range over a long distance directly.write 3 important factor which prevent you from doing so,how will you overcome this?

Answer 1

The factors preventing the direct transmission of electronic signals are
1) Antenna size
2) Power radiated by the Antenna
3) Mixing of signals from various antennas
We will overcome these by modulating the signals

Answer 2

The factors that preventing direct transmission of electronic signals are
1) antenna size
2) power radiated by antenna.
3) modulation of signals.