Encryption is illegal over Ham Radio in many jurisdictions.

To be clear, encryption is not illegal per se. Obscuring the meaning of a message is what’s illegal. You can encrypt radio traffic if you have the keys posted somewhere so that anybody could decrypt the transmission. If you obscure the meaning of a message in plain English by using code words, that’s illegal.

I am in a rural area, so this would work. Although, I could just pgp encrypt a message and put it on a microsd card, and send that with a pigeon.

Hmm…

Can any of this be weaponized to protect a property?

Can any wireless be…? Ideally without frying anything locally like an EMP… “you mean an emp? No, and EMP!”