Question

Draw a schematic diagram showing the (i) ground wave (ii) sky wave and (iii) space wave propagation modes for em waves. Write the frequency range for each of the following: 

(i) Standard AM broadcast 

(ii) Television 

(iii) Satellite communication

Answer 1

Frequency Range of Different Services 

(i) Standard AM broadcast 540–1600kHz

(ii) Television 54–890MHz 

(iii) Satellite Communication 5.925–6.425GHz uplink 3.7 - 4.2GHz downlink.