Across
- 3. Global positioning System also known as _________.
- 5. Send a signal.
- 7. Helps messages reach people quickly.
- 8. Information that has been put into digital code.
- 9. A code originally for the telegraph.
- 10. Uses digital code with the help of cell towers so you can hear people better.
Down
- 1. Earliest form of long distance communication.
- 2. Object in space that transmit or sends signals to earth.
- 4. A type of receiver that you carry with you.
- 6. This is what transmits signals over long distances without using a wire.(Two words)