[FR_addict]

Is there any encryption techniques available for ham radios?

[Malsua]

Is there any encryption techniques available for ham radios?

Of course. That said, automated encryption requires some sophisticated hardware. Person to Person encryption is fairly straight forward if you use a one-time pad. Of course that requires some planning.

[Charles Martel]

FCC regs say that encryption on amateur radio bands is illegal. It's not a simple issue, as "encoding" is okay, as long as the meaning of the message is not intentionally obscured. And now some emergency responders are trying to get the FCC to give them encryption rights on ham frequencies.

There are, of course, digital modes which allow you to squirt messages to other receivers which can be read on a computer screen linked to the radio. PSK31 is one such mode (there are a number of them now).

It's worth learning this stuff, even if you just listen.

[Vermont Lt]

You are not supposed to. There are data streams that might be better suited. They transmits at snail’s pace.