SPARKword Puzzle

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Across
  1. 3. $25 HT
  2. 6. Voice mode
  3. 8. Bad operator
  4. 12. 50 ohms, etc.
  5. 14. Ground system
  6. 15. Top dog
Down
  1. 1. Behavior of radio waves as they travel
  2. 2. Samuel _____
  3. 4. Low power
  4. 5. Emergency Power
  5. 7. Balanced to Unbalanced
  6. 9. Two-wire antenna
  7. 10. Track me
  8. 11. Sunday SPARK activity
  9. 13. Popular digi mode