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Across
  1. 2. Existing or happening independently or in a different physical space
  2. 5. The speed at which an object is travelling
  3. 7. A piece of equipment for broadcasting radio or television signals
  4. 10. The process in which the beauty or quality of something is destroyed or spoiled
  5. 11. A piece of equipment that changes radio and television signals into sounds and pictures
  6. 12. A copper wire core surrounded by copper braid
  7. 13. A close-fitting covering to protect something
  8. 16. Microwaves can be guided along rectangular copper ducts by a series of reflections from the inner walls
  9. 18. Noise or other electronic signals that stop you from getting good pictures or sound on a television or radio
Down
  1. 1. An object shot at during shooting practice, often a circle with a pattern of rings, or any object or place at which bullets, bombs, etc. are aimed
  2. 3. The basic and most important part of something
  3. 4. A liquid such as water in the form of very small drops, either in the air, in a substance, or on a surface
  4. 6. An aerial
  5. 8. To be everywhere around something
  6. 9. Surrounded by walls, objects, or structures
  7. 14. The force that makes it difficult for one object to slide along the surface of another or to move through a liquid or gas
  8. 15. A system that uses radio waves to find the position of objects that cannot be seen range The distance
  9. 17. Bent so that the original shape is changed or destroyed