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Note: A standard for crossword puzzles is when all words in a clue are capitalized, the solution is the abbreviation or acronym for that clue; e.g., Alternating Current = AC.
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| ACROSS | DOWN |
| 5. Added catalyst 8. A common RS-232 serial bus command (abbr.) 9. Creates an impenetrable physical barrier 10. Ham award meaning Worked All Zones 13. FM signal extraction device 14. Rms current times rms voltage 15. Notch type filter (abbr.) 16. The shape of a circularly polarized antenna 17. Original Equipment Manufacturer (abbr.) 20. Used to define the East /West location of a point on the surface of the earth | 1. Engineering Change Order (abbr.) 2. Capacity for doing work by virtue of momentum 3. The ten administrative areas established by the FCC for Amateur Radio (2 wds., pl.) 4. Method of self-detection and self-correcting transmission of digital data (abbr.) 6. Tool for removing insulation from a wire (pl.) 7. Instrument used to measures atmospheric pressure 11. Number system which uses only the digits 0 to 7 12. Its chemical symbol is Rn 18. Telex-Over-Radio (abbr.) 19. User Datagram Protocol |

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