Perhaps some kind of compromise is possible, where all encrypted ham must broadcast their callsign in the clear every few seconds.
You must already broadcast your call sign at a regular interval when transmitting.
My thought is that it would always include that part. Maybe not every few seconds, but the same as the current rule - end of every broadcast or every 10 minutes, which ever is shorter.
The idea/premise of a private frequency band is to move data (voice, binary,..) from one point to another (or many).
The idea/premise of ham radio is to learn and experiment, to test your devices, compare with others, see how far your signal reaches, etc. It was never meant to be a means for private 1-on-1 conversations.
How will i test my receiver if your transmission is encrypted? What will I learn from that? How do I know that you're not abusing the bands for commercial use? And what do other ham radio operators gain from you transmitting encrypted data?
Apart from amateur radio, what tool exist, that does not require the assistance of private corporations, ISPs, service fees, patents etc? I go camping way outside of cell phone tower ranges and it would be should be legal to communicate with my group privately.
Radio is the only form of totally citizen controlled real time distance communication we have, if we do not count smoke signals. Snail mail encryption is already allowed. Encryption must be allowed on radio as well.