When you are someone who is interested in working in news, remember that you should not try to sound like someone else. There are far too many aspiring news anchors who find that they are going to get no attention at all because they tried to sound like the anchors that they grew up with, or the anchors in the movies. The issue that a lot of people run into is that they try to find a voice that sounds more like a parody of a normal TV anchor's voice and they end up getting no work because of that! Instead, use your own voice and make sure that you let your own personality shine through. If you are going to be a good TV anchor, you need to have good delivery and that involves being both sincere and easy to believe.
One thing that you definitely need to keep in mind is that a news anchor is not someone who merely reads the news. People watch news on television to get more of a connection with it, and you will find that you need to be willing to react to the stories and show the audience that they are connected to the stories themselves. As a news anchor, you need to be someone who communicates with the people around you, and you need to be thinking actively about the story. You should definitely focus on the words in front of you and you should make sure that you do not sound as though you are merely reading the words that are scrolling past.
The issue that a lot of people run into is that they think that working as a news anchor simply means reading from the teleprompter. The truth is that the role of the news anchor is significantly more involved than that, and your delivery is dependent on you being able to connect with the story. If the teleprompter goes out or if there is some sort of issue with it, you will find that you need to look into being able to relate the story as completely as you can. Live newscasts do have technical issues and you need to develop the ability to ad-lib on top of it.
Another thing that you need to remember is that people who are watching you can sense fear. People are very good at picking up on the non-verbal clues that occur when people are upset or nervous and you need to be able to calm yourself down. Remember that things do go wrong during a newscast, and that no matter what, you need to stay calm. A good news anchor can keep things together even when there are problems and you will find that if you are calm enough, most if not all audience members will not be able to realize that there is something wrong. Also, make sure that you are always aware of the cameras. If a camera is pointed at you, your best bet is to assume that it is on and broadcasting. This will prevent you from doing anything for a live audience that you would not want to do.
If you are interested in moving forward and in making sure that you are going to be able to get the TV anchor job that you need, remembering the things above can help you out a great deal!