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It's the dead of winter - what better time for antenna work? You know what they say about the final result working so much better if the work is done in snow or rain! So get out there and haul up those skyhooks, dig those radials, and change those rotators! And when you're all done and frozen, looking for something to do while your feet thaw out, here's a handy crossword puzzle about antennas.

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Across
3. Perpendicular to an axis of an antenna
7. Makes a signal louder
10. Where antennas are tested
12. Instead of hi, we now want this kind of fi
13. Unbalanced impedance match
14. Venerable antique
15. The ARRL's on-line technical reference (abbr.)
18. Flex under one's own weight
20. Safety lab (abbr.)
21. Forms an important ratio with front
22. Swiss prefix
23. Tube that holds up an antenna
24. Amateur satellite prefix
25. Bolt with a ring for a head
27. British abbreviation for high voltage
28. Triangular antenna
30. To apply energy
33. Opposite of 63 Down
34. Single layer of several
36. Keeps currents even
38. Amount of difference in bearing
39. Prize given for merit
41. Powered up
42. Slang for radio
43. The Show-Me State (abbr.)
45. Start again or go back to the beginning
48. Radiates the same everywhere
51. Oldest mode for voice
52. Terminal that attaches to a screw
54. Number (abbr.)
56. Energy given off by an antenna
59. Antennas have mains and sides
61. Towards the sky
62. Milli-micro (prefix)
64. Smallest of the 48 contiguous states (abbr.)
65. Diameter measured outside a tube (abbr.)
66. Radiated power taking into account line losses and antenna gain (abbr.)
68. A wire antenna of indeterminate length
69. The Granite State (abbr.)
70. Scares birds off antennas...maybe

Down
1. An electrical imaging plane
2. Where a Zepp antenna is fed
3. Balanced match dubbed "hairpin"
4. Sigh of disappointment
5. Bowl-shaped antenna
6. Round insulator
7. Satellite organization
8. 25.4 of these in an inch (abbr.)
9. Graph showing antenna radiation by direction
11. Opposite of none
16. Builds up on antennas in winter time
17. Waves that bounce off the ionosphere
19. Can perform a task if willing
21. Slang for automaton
23. A giga-pico-henry (abbr.)
24. Brings together so that they fit
26. Type of transistor circuit with no voltage gain, but lots of current gain (abbr.)
29. A measure of an antenna's ability to capture signal power
31. Guess at an arrival time (abbr.)
32. Measure of gain with respect to a dipole (abbr.)
33. What makes the ionosphere
35. Type of beam antenna
37. Circular element
38. Antenna with multiple elements
40. What turns antennas
43. Inventor of a famous rectangle
44. Bah, humbug!
46. Electromagnetic (abbr.)
47. Complement to "az"
49. Bounce of a signal
50. Not out
53. Measure of wire thickness (abbr.)
55. Antenna that looks like a megaphone
57. Antenna that doesn't work well
58. What everything looks like when all you've got is a hammer
60. Placed during auctions
63. Indicates a smaller version of something
65. Affectionate term for husband (abbr.)
66. The two types of fields in a radio wave
67. Where the boxes are (abbr.)