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A73A CQWW 2012 Contest operation from the Desert of Qatar
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A73A CQWW 2012 Contest operation from the Desert of Qatar

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This presentation was given in the Contest forum at the HamRadio convention 2012 in Friedrichshafen, Germany. …

This presentation was given in the Contest forum at the HamRadio convention 2012 in Friedrichshafen, Germany.

A73A was a Multi/Multi contest participation in Fieldday style from the desert of Qatar. Vertical Antennas were used directly over salt water.

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  • 1. A73AMulti/Multi from the Desert of QatarTobias Wellnitz, DH1TW Friedrichshafen Tobias@dh1tw.de June 2012
  • 2. On my way to Qatar FNA73A CQ WW SSB 2011 2012 Slide 2
  • 3. On the way to A73A campsite FNA73A CQ WW SSB 2011 2012 Slide 3
  • 4. Arriving at the campsite FNA73A CQ WW SSB 2011 2012 Slide 4
  • 5. A73A campsite FNA73A CQ WW SSB 2011 2012 Slide 5
  • 6. So where is A73A campsite exactly? FNA73A CQ WW SSB 2011 2012 Slide 6
  • 7. Satellite Image A73A campsite 360° 300° A73A Campsite FNA73A CQ WW SSB 2011 2012 Slide 7
  • 8. Strategic Decissions Some Facts: • Temporary Activity • Directly on the beach (salt water) • Protected Lagoon • No high towers available • 85% QSOs come from direction 300-360º Vertical Antennas FNA73A CQ WW SSB 2011 2012 Slide 8
  • 9. N6BT Bravo Verticals • 2 el vertical parsitic array • Elevated radials • Switchable Reflector/Director • 3 Directions FNA73A CQ WW SSB 2011 2012 Slide 9
  • 10. A73A Vertical Antenna farm FNA73A CQ WW SSB 2011 2012 Slide 10
  • 11. 2el parasitic vertical array FNA73A CQ WW SSB 2011 2012 Slide 11
  • 12. 2el parasitic vertical array (Refelector) FNA73A CQ WW SSB 2011 2012 Slide 12
  • 13. 2el parasitic vertical array (Director) FNA73A CQ WW SSB 2011 2012 Slide 13
  • 14. 2x 2el vertical phased array FNA73A CQ WW SSB 2011 2012 Slide 14
  • 15. 2x 2el vertical phased array (BIP – 0º) FNA73A CQ WW SSB 2011 2012 Slide 15
  • 16. 2x 2el vertical phased array (BOP – 180º) FNA73A CQ WW SSB 2011 2012 Slide 16
  • 17. 2el vs phased 2x2el vertical array (BIP) FNA73A CQ WW SSB 2011 2012 Slide 17
  • 18. A73A Antenna setup 10m: 2x 2el N6BT verticals + A4S@15m 15m: 2x 2el N6BT verticals 20m: 2x 2el N6BT verticals 40m: 2x 2el N6BT verticals 80m: 4-Square 160m: 20m high L-Antenna FNA73A CQ WW SSB 2011 2012 Slide 18
  • 19. A73A antenna farm FNA73A CQ WW SSB 2011 2012 Slide 19
  • 20. A73A Antenna farm (A4S) FNA73A CQ WW SSB 2011 2012 Slide 20
  • 21. A73A Antenna farm 80m 4-Square FNA73A CQ WW SSB 2011 2012 Slide 21
  • 22. A73A Antenna farm 160m L-Antenna FNA73A CQ WW SSB 2011 2012 Slide 22
  • 23. Stackmatch II Plus (for BIP & BOP) FNA73A CQ WW SSB 2011 2012 Slide 23
  • 24. Be aware about low & high tide FNA73A CQ WW SSB 2011 2012 Slide 24
  • 25. Infrastructure is crucial FNA73A CQ WW SSB 2011 2012 Slide 25
  • 26. And food as well  FNA73A CQ WW SSB 2011 2012 Slide 26
  • 27. 10m & 15m Shack FNA73A CQ WW SSB 2011 2012 Slide 27
  • 28. 20m, 40m, 80m, 160m Shack FNA73A CQ WW SSB 2011 2012 Slide 28
  • 29. 20m, 40m, 80m, 160m Shack FNA73A CQ WW SSB 2011 2012 Slide 29
  • 30. Equipment & Results • 5x FT2000 + 1x IC746 Pro III • 4x ACOM2000A, OM3500, Emtron DX2 Band QSOs Zones Countries 160m 340 13 62 80m 1134 27 92 40m 1081 27 101 20m 2280 40 145 15m 2815 40 147 10m 3978 40 161 Total: 11628 187 708 Total score: 29,3 Mio FNA73A CQ WW SSB 2011 2012 Slide 30
  • 31. Result analysis Claimed Position #1 Asia #4 Outside US FNA73A CQ WW SSB 2011 2012 Slide 31
  • 32. Thanks for all the QSOs! FNA73A CQ WW SSB 2011 2012 Slide 32
  • 33. Follow me! Twitter: DH1TW Website: www.dh1tw.de Pictures © by: - A71BX - HZ1DG - K5GN FNA73A CQ WW SSB 2011 2012 Slide 33
  • 34. FNA73A CQ WW SSB 2011 2012 Slide 34