They can. Some start out that way. Others have to learn to do it because they only broadcast. The latter is what I think your case is, but only people receptive enough and trained in the mental arts would be able to hear you.

Rachel's eyes lost focus as she considered the options. There had to be more than telepathy going on. Telekinesis had to be part of the girl's power set with her ability to move objects. Though the manifesting of bleeding walls was something else entirely.

It may be more simple to refer to yourself as a psychic individual. Considering your current non-corporeal state. You have more than telepathy. A little telekinesis, too. And I'm not very certain you're dead. Because I have a very hard time communicating with dead people.