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1. Emitting a radio wave
9. Band between RF and BB
10. Shorthand for oxygen
11. Time delay (abbr.)
12. Stock symbol for Hewlett Packard
14. Satellite EHF Communications for Mobile Multimedia
16. Half of DSB
18. Computer messaging service
21. 30 kHz to 300 kHz
23. Local Oscillator (abbr.)
24. Upward force generated by an airfoil
25. Brightest star in the sky
28. Electric coronal discharge
30. Software drafting tool (abbr.)
31. Programmable logic device (abbr.)
33. Type of logic gate (pl.)
35. Irratiated cosmic gas
37. Chemical symbol for radon
38. Unit of energy (pl.)
40. Stock symbol for Raytheon
41. Beat frequency oscillator (abbr.)
43. This website's title, with 39 Down
44. Chemical symbol for cesium
45. Mr. Morse's first name
46. Specialized mobile radio (abbr.)
49. Exponent that returns the original number
50. Positive voltage lead color
52. _____ Percy Maxim, founder of the ARRL
55. Chemical compound containing at least one oxygen atom as well as at least one other element (pl.)
57. Prefix meaning ground or earth
58. Filter type that blocks frequencies below and above a specified band (abbr.)
60. Chemical symbol for europium
61. Part of a screw that engages the driver (pl.)
62. Crystal filter type (abbr.)
64. What common optical device produces images by reflection
66. Type of data conversion device (abbr.)
68. Chemical symbol for neon
69. Ratio of circumference to diameter
70. Chemical symbol for beryllium
71. Added signal content to offset losses or distortion | 1. Computer display unit (pl.)
2. Microwaves & __ magazine
3. The antiparticle of an electron
4. Wheel attachment point
5. Referring to atoms
6. Time Division Multiplexing
7. Unit of inductance (abbr.)
8. World's first satellite navigation system (abbr.)
13. Ham's code for "Can you acknowledge receipt?"
15. Roller bearing devices on sides of rack-mounted equipment (pl.)
17. Company that markets Delphi software
19. Unit of processor calculation speed (abbr.)
20. Colorado Springs military school (abbr.)
22. Upper frequency (abbr.)
26. Useful distance between Tx and Rx (pl.)
27. Unintended frequency products from a mixer
29. Chemical symbol for krypton
32. ___-AZIMUTH telescope mount
34. Created an impenetrable physical barrier
36. Soaks up RF energy
37. International phonetic alphabet letter "R"
39. This website's title, with 43A
42. Cooling device
43. Its chemical symbol is Ce
44. Pass-Fail ________, defining limits for acceptance test
47. Unit of inductance (abbr.)
48. 36 inches
51. What is the name of the unit of angular measurement equal to one ninetieth of a right angle
53. Government program to bring electricity to farms (abbr.)
54. Placed a blocking template over a PCB layout
56. Chemical symbol for xenon
59. Attenuator
61. Communication between stations by reflecting the radio waves off of the ionosphere (pl.)
63. Ham abbreviation indicating contacts with all major land masses
65. Indium phosphide
67. Chemical symbol for cobalt
70. Chemical symbol for beryllium |
See solution below 
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