Question

what is the longest wavelength of audio signals to be transmitted in communication system? why can't we transmit these signals directly at long distances? give any two reasons. what is done to transmit them to long distances

Answer 1

The length of the wavelength used in communication devices for the transfer of data depends on the device and the type of data it is transmitting. For instance, televisions and mobile phones transmit different types of wavelengths since they transmit different types of data.


We cannot directly transmit large wavelengths over long distances due to two main reasons: power loss and the size of the antenna.


When large wavelengths are transmitted, they lose energy while trying to counteract the force of gravity. Similarly, large wavelengths require low frequencies, which require special antennae of sizes, that are yet to be invented by modern technology.