Using it indicates that you will receive news from far away. Damaged antenna indicates annoyances.
Dream dictionary: Antenna dream meanings
If you dream of antena, it indicates your ability associating with others. This dream shows, that you do not have any discomfort, while putting your thoughts to those you are in contact. What you should do, is to use this gift to make money or take important management into your control and then you will become very fortunate.