this post was edited
They are illegal
Where do you get your information from?
Please post a link to where you get the incorrect information that you posted above.
This is the second time you've posted wildly inaccurate statements in this thread.
27 MHz (26.965 MHz to 27.405 MHz) is perfectly legal for CB radio in Australia, and it's also legal for marine usage as well as being license-free for users.