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Reproduction of this puzzle without the express permission of RF Cafe is prohibited. 
| ACROSS | DOWN | 1. The "G" in GPS
4. Course headings
8. Arithmetic Logic Unit (abbr.)
10. International Reply Coupon (abbr.)
11. Provider of services for telecommunications systems in Switzerland (abbr.)
13. Filter type (abbr.)
15. Range of frequencies
17. Type of current
18. Type of modulation (abbr.)
19. Filter type that blocks upper frequencies (abbr.)
20. Institute of Electrical and Electronics Engineers
22. Chemical symbol for lithium
23. Chemical symbol for chlorine
24. Part of an optical cable bundle
27. Imaging device (abbr.)
29. Opposite of O.D.
30. U.K. equivalent of the IEEE
31. Computer messaging service
34. Filter type that blocks frequencies in a specified band (abbr.)
35. Mass unit (abbr.)
36. Modulation type (abbr.)
37. Certificate of Successful Completion of Examination (abbr.)
39. Monolithic microwave integrated circuit (abbr.)
40. Stock symbol for Boeing
42. Band between RF and BB
43. Multifunctional silicon devices (abbr.)
44. Balanced-to-unbalanced device
45. Electronics components & batteries supplier based in Japan
46. Chemical symbol for argon
47. Type of logic gate
49. State of matter (pl.)
51. Centimeter (abbr.)
52. BS__ - the degree held by many RF Cafe visitors
54. Complex Instruction Set Computer
56. Analog-to-Digital (abbr.)
57. Chemical symbol for francium
58. Chemical symbol for cadmium
59. Wireless phone region
62. Intermodulation distortion (abbr.)
64. Electromagnetic radiation in the visible band
66. Akin to EEs, CEs, AEs, etc.
68. Digital voltmeter (abbr.)
70. Circuit or mechanical designer with a Bachelor's or higher degree
71. Helium, hydrogen, argon, etc. | 1. Started as HPIB
2. Spurious signal produced in a receiver
3. Chemical symbol for lanthanum
4. Data transmission pathway
5. Referring to atoms
6. Multifunctional silicon devices (abbr.)
7. Key feature in a high level overvoltage protection device
9. Tie a bundle of wires together
10. One port of an amplifier
12. Curly-Q type light bulb (abbr.)
13. Method of sending high-speed digital signals on electric distribution wires, a Ham's nemesis (abbr.)
14. Part of a closed-loop system (pl.)
16. Constellation of the Ram
17. Morse Code for "from"
19. Display type
21. The second-lowest region of the ionosphere found approximately 60 to 70 miles above Earth (1 ltr. + 1 wd, hyph.)
24. A number series that has each number equal to the sum of the two previous numbers
25. Chemical symbol for beryllium
26. Part of a gyroscope that facilitates free movement of the reference sphere
28. Outside shell (pl.)
32. A common battery cell size
33. BS__ - the degree held by many RF Cafe visitors
35. Unit of length (abbr.)
38. Chemical symbol for californium
39. 300 kHz to 3 MHz
41. Chemical symbol for aluminum
43. Theoretical
45. Start frequency (abbr.)
47. Stock symbol for Advanced Micro Devices
48. Specify system parameters
50. MS database
51. Software drafting tool (abbr.)
53. Unit of energy
54. Closed Circuit Television
55. Opposite of O.D.
60. Chemical symbol for einsteinium
61. Smartphone display (abbr., pl.)
63. ELI the ICE ___
65. High Data Rate
67. Chemical symbol for bismuth
69. Chemical symbol for magnesium |
Answer below
| 
Kirt
