Across
- 2. These are main waves in HF
- 4. R for
- 5. 2 frequencies for one communication
- 6. colour code for value 6
- 8. Important measurement in Antenna tunning
- 9. Primitive mode of communication
- 12. Important in city communication
- 13. end of morse
Down
- 1. This is main part of rectifier
- 2. To remove noise, use this.
- 3. This is for closing down the station
- 6. This is best rectifier
- 7. This is above VHF
- 8. A zone without signal
- 10. Old TV antenna
- 11. phonetics for fingers