Isn SSB an old method of transmission? Why use it in hopping?
A. SSB has many advantages when used on hopping. As it only radiates power when a voice signal is active, and radiates zero power between syllables, it has a low probability of intercept. It stands out less than a digital signal on a monitoring receiver. Consequently cracking the hop sequence is made much more difficult. Furthermore because it radiates power only on active speech it is more current efficient than digital speech.