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Text File  |  1988-09-11  |  5.0 KB  |  81 lines
  1.  
  2. THE FOLLOWING INFORMATION CAME TO ME FROM JOE LISMAN, K7PZH OF DOS PALOS, CA.
  3. HE GOT IT FROM RAY MILLS, W6WIM, ALSO OF DOS PALOS.  THE INFORMATION SHEET WAS
  4. TITLED:
  5. FOUR ELEMENT QUAD - FULLERTON RADIO CLUB
  6. It is supposedly equal to a Cushcraft 11 element beam.
  7.  
  8.  
  9. LR  21" per side                         LT  20.51" per side
  10. 84.1" total                              82.04" total
  11. Diagonal length 29.73"                   Diagonal length 29.01"
  12.  _________________________                _________________________
  13. |.                       .|              |.                       .|
  14. |   .                 .   |              |   .                 .   |
  15. |      .           .      |              |      .           .      |
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  18. |         .     .         |              |         .     .         |
  19. |      .           .      |              |      .           .      |
  20. |   .                 .   |              |   .                 .   |
  21. |_________________________|              |_________________________|           
  22.  
  23.  
  24.  
  25. LD - 1, 19.9" per side                   LD - 2, 19.7" per side
  26. 79.6" total                              78.8" total
  27. Diagonal length 28.14"                   Diagonal length 27.86"
  28.  
  29.  _________________________                _________________________
  30. |.                       .|              |.                       .|
  31. |   .                 .   |              |   .                 .   |
  32. |      .           .      |              |      .           .      |
  33. |         .     .         |              |         .     .         |
  34. |            o            |              |            o            |
  35. |         .     .         |              |         .     .         |
  36. |      .           .      |              |      .           .      |
  37. |   .                 .   |              |   .                 .   |
  38. |_________________________|              |_________________________|
  39.  
  40.  
  41.  
  42. The antenna boom is made out of schedule 40 pvc pipe, 1" size, which is 1.5"
  43. in diameter, actual size.  The boom is approximately 42" long.  The cross
  44. pieces are 1/4 inch bicycle flag poles made out of fiberglass, or you could
  45. use fiberglass fence posts available from Orchard Supply Hardware stores in
  46. California.
  47.  
  48.  
  49.                           TOP VIEW LOOKING DOWN
  50.  
  51.   LR                    LT                   LD-1                 LD-2
  52.  
  53.          Vertical Polarization Feed Point
  54.                          |
  55.                          V
  56.    _                     _                    _                    _
  57.   | |                   | |                  | |                  | |
  58.   | |                   | |                  | |                  | |
  59.   | |                   | |   1" PVC T       | |                  | |
  60.   | |                   | |      |           | |                  | |
  61.  _|_|___________________|_|__________________|_|__________________|_|_
  62. |____o_________________o_______|_|_|________o____________________o____|
  63.   | |                   | |     |_|          | |                  | |
  64.   | |                   | |                  | |                  | |
  65.   | |                   | |                  | |                  | |
  66.   | |                   | |                  | |                  | |
  67.   |_|                   |_|                  |_|                  |_|
  68.  
  69.    | <-----16.1"-------> | <----12.04"------> | <-----
  70.         0.2 wavelength        0.15 wavelength      0.15 wavelength
  71.  
  72. There it is folks and I hope that you are able to build it from these crude
  73. instructions.  REMEMBER FOR VERTICAL POLARIZATION, YOU FEED A QUAD FROM THE
  74. HORIZONTAL SPREADER END.  I think that one of the uses of packet should be the
  75. desimination of information.  This is my attempt at a construction article.
  76. How about some more homebrew projects with illustrations on packet radio.
  77. I would be interested in reports from anyone who builds this antenna. Good
  78. luck and I will look forward to your commeDoug, KI6DS @ K6RAU-1
  79.  
  80.  
  81.