The 7330 has a built-in real speech vocabulary of ~1600 words. Using message control characters, you can build many types of messages for your users.
Here's an example of an ID message that you can define:
; "Welcome to the W 0 C R A Repeater System" MPW 15 9960 0378 0362 0357 0067 0000 0047 0062 0045 0342 0351 *
And it sounds like this: real speech message.
Here's an example of using the runtime variables to say the date and time: