Classified data should only be transmitted wirelessly when the wireless infrastructure is secure and strong encryption is used.
Wireless computer monitors are powered through standard wall outlets. Only the video input signal is transmitted wirelessly.
By converting it to microwaves
the digital signal is converted to analog signal after using by transmitted antenna
First of all digital signal cant be transmitted wirelessly. digital signal can only be transmitted through optical fibre in the form of pulses. so we have to convert digital signal to analog form with the help of DIGITAL TO ANALOG CONVERTOR ( D TO A CONVERTOR). Then this analog signal should be super imposed on carrier signal called MODULATION. modem can be used for that. then that signal can be transmitted to the air through alloted band width like cellular system with the help of transceiver. at the reciveing end we can demodulate the signal with the help of modem & can convert it back to digital form through A TO D CONVERTOR.
IASO
When several signal transmitted simultaneously. this is called multiplexing of signals.many signal are combined into one and then they transmitted.
Analog and digital signals can both be transmitted wirelessly. Wireless internet (Wi-Fi), for instance, uses digital. AM and FM Radio uses analog. Cell phones are digital. Cordless phones can be digital or analog.
Analog signals are transmitted as electrical waves.
Reflection of a transmitted signal is the basic premise of radar and sonar.
Yes, this is a true statement. A TV channel is most often characterized by the frequency of its transmitted signal.
Radio Waves