Everyone does, drones for the most part still use analogue video because latency matters and it also simplifies quite allot of things.<p>Encryption in military application has to take a second stance to availability this is why many tactical systems use obfuscation and signal intercept avoidance (e.g. spread spectrum frequency hopping which is highly effective especially when combined with differential signaling) rather than proper encryption since key exchange and management is still a big issue in real world applications.<p>Having strong encryption that will fail you when you need it and make you system unavailable is a much bigger risk in tactical military applications than some one intercepting and decrypting your communications (note tactical application, for strategic communications the playbook is completely different).<p>Military communication gear (and pretty much every other piece of electronics) is also quite out dated due to the sheer time scales involving adoption and it having to support integration with legacy systems that might be 30 years behind it.<p>With drones specifically bandwidth is also an issue especially if you aren&#x27;t say the US and can launch nearly 20 dedicated satellites to support your drone fleet (and even US drones have the same issues, their communications were scrambled at all until 2009 and some probably still aren&#x27;t).<p>Drones have limited bandwidth what you usually do is use encrypted digital signaling for the command and control channels and multiplex all of your sensors over analogue video which is then usually transmitted using standard TV broadcasting protocols (either terrestrial or satellite), if you can scramble your sensory signals sufficiently to prevent real time capture more power to you but it&#x27;s not the main goal - making sure the signal gets back to you, that you do not lose imagery due to bandwidth limitations and that there is as little delay as possible is the key part, having a signal which can also be easily decoded is also important because if you cant propagate it to the forces that need to consume the feeds from the drone (and these aren&#x27;t rear echelon guys those ones can wait, were talking on boots in the ground or in the cockpit) it cant serve its main mission.