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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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Answer below
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Kirt
