No, 3258?km2
NO, it necessary for a transmitting antenna to be at the same height as that of the receiving antenna for line-of-sight communication
9V
m= M/A A is the carrier amplitude. Where, M is the modulation amplitude and is the peak change in the RF amplitude from its unmodulated value.
1
Multiplexing is a scheme for transmitting multiple signals at the same time e.g. speeches of ten persons in different rooms on the same channel. Only one transmitters will be required in any multiplexing scheme
yes
In Amplitude modulation if one of the two side bands is removed by a filter it is possible to recover the modulating signal
0.662
m= M/A A is the carrier amplitude. Where, M is the modulation amplitude and is the peak change in the RF amplitude from its unmodulated value.