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RF Engineering Crossword Puzzle
April 29, 2012
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Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
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1. Founder of the ARRL (3 wds.)
8. Largest broadcaster in the UK (abbr.)
9. Precision approach radar (abbr.)
10. Spurious RF products created by metal joints (abbr.)
12.
Recovers the modulation from the RF signal
15. Measured a waveform at regular intervals
18. Ratio of
circumference to diameter
19. Unit of inductance (abbr.)
20. Chemical symbol for thallium
21.
Chemical symbol for einsteinium
23. SIP x 2
24. Telecommunications Information Network Architecture (abbr.)
26. Airfoil shapers
28.
Common average used for sinewaves (abbr.)
30. Indium phosphide
32. Peak envelope power (abbr.)
33.
Early computer display screen resolution (abbr.)
34. A common battery cell size
36. International
Telecommunications Union
37. Chemical symbol for lanthanum
39. Impenetrable physical barrier
41. Key feature in a high level
overvoltage protection device (pl.)
43. Chemical symbol for argon
44. Have a chemically induced effect
47. Unit of conductance (pl.)
49. A 2-dimensional surface
51. Thermocouple, photodetector, limit switch,
for example
53. Measuring devices
54. Logical negation operator
55. Greek letter
56. Numerical basis for decibels
(abbr.)
57. Very common network topology and protocol
62. Reduce in amplitude
65. Chemical symbol for
nobelium
66. Type of data conversion device (abbr.)
67. U.S. military organization (abbr.)
68. Weight
(abbr.)
69. Send information
71. Antenna effective area
73. End of Life (abbr.)
74. Semiconductor
device type (abbr.)
76. Internet address (abbr.)
77. What is the name of the second series in the
spectrum of hydrogen
83. The lowest region of the ionosphere found approximately 25 to 55 miles above Earth
(hyph.)
88. Dilbert's female co-worker
89. Write software
93. Network device that takes commands from another
similar device
94. Type of modulation (abbr.)
95. Sample-and-____
96. Official engineering change
document (abbr., pl.)
98. Chemical symbol for chromium
99. Type of logic gate
101. Online service
102. Satellite TV system
103. 24 hours
105. Computer communication scheme (abbr.)
107. Ground fault
interrupter (abbr.)
108. Mr. Dirac's first name
109. Internet addresses
110. Using the moon as a passive reflector to
establish a signal path; moonbounce (abbr.)
111. Chemical symbol for iron
112. Chemical symbol for
selenium
113. Front edge of a wing (abbr.)
114. Chemical symbol for cadmium
115. Turned on its axis
119. Substance that removes electrons from another reactant
123. Crystal filter type (abbr.)
124.
International Microwave Symposium (abbr.)
126. Half of DSB
127. A receiver circuit consisting of a beat
frequency oscillator and additional circuitry for enhanced reception of SSB signals (2 wds.) |
1. Heterojunction Bipolar Transistor
2. Current-voltage phase mnemonic
3. A small circle whose center moves round the circumference of a larger one, used in the Ptolemaic system to
describe the orbits of the planets
4. Chemical symbol for radium
5. Conduction of electricity across the
surface of a dielectric
6. Innovative Power Products, Holbrook, NY (abbr.)
7. 1/000 of an inch
8.
Chemical symbol for beryllium
11. Akin to an EE, CE, AE, etc.
12. Slang for Ursa Major and Minor
13.
Tweaks a filter for the correct response
14. Uses a filter to predistort a transmit waveform
15. ESD
protective apparel
16. Consequence of under sampling
17. Produces an equation from empirical data
18. Part of a male
connector
22. Surface Mount Technology
23. Performing a calculus function
25. Internet protocol (abbr.)
27.
Stock symbol for Boeing
29. Radio receiver scheme which beats or heterodynes a second radio frequency to
the incoming radio signals
31. Wireless LAN
35. Aerodynamic opposition to thrust
38. Automatic
Calibration System (abbr.)
40. Powers pneumatic devices
42. Automatic network analyzer (abbr.)
43.
Arithmetic Logic Unit (abbr.)
45. BS__ - the degree held by many RF Cafe visitors
46. Frequency
48.
Akin to EEs, CEs, AEs, etc.
49. Send a wireless to an early hip-worn wireless device
50. Chemical symbol
for neon
52. Device attached to an antenna mast which rotates it so that the antenna can point in different
directions
53. "The father of rocketry"
58. Telex-Over-Radio (abbr.)
59. Stock symbol for National
Semiconductor
60. High-speed logic family
61. Agilent's EE design software (abbr.)
63. Software
engineering tool (abbr.)
64. Measure of source / load mismatch (abbr.)
70. Institute of Electrical and Electronics Engineers
72.
Oscillator type that is referenced to an external source (abbr., pl.)
75. Large transmitting tube such
klystron, magnetron
77. Region between semiconductor doping potentials
78. Chemical symbol for aluminum
79. Upward force generated by an airfoil
80. Wire diameter unit (abbr.)
81. Ham's code for "Are you
busy?"
82. Type of data conversion device (abbr.)
84. Circuit for maintaining constant voltage (abbr.)
85. 36
inches
86. 1.602E-19 Joules
87. Refuse to absorb energy
89. Queried an input for changes
90. Radio term for
an unconventional frequency separation between input and output frequencies (2 wds.)
91. ________ Time, how
long a stepped signal takes to go from 10% to 90% of its full-scale value
92. Mathematical operation
concerned only with the remainder when one number is divided by another
95. Artech _____, technical book
publisher
97. Shuttle Amateur Radio EXperiment
100. Switch position
101. A common battery cell size
104.
Ham-ese for Young Lady
106. Stock symbol for Advanced Micro Devices
116. Unix, Linux or Windows (abbr.)
117. Transformer interwinding connection
118. The Microwave Office software company (abbr.)
120. Digital
storage oscilloscope (abbr.)
121. Automatic Send-Receive (abbr.)
122. Chemical symbol for niobium
125. Chemical symbol for mendelevium |
See solution below
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