1. Dennis Doyle Title slide

2. Dennis Doyle Topics  Operation  Searching

3. Dennis Doyle Operation  Signal  Volume  Types  Testing

4. How signal is generated and received Signal propagation

5. Dennis Doyle Signal Volume  Orientation  Distance  Control

6. Daigram of beacon orientation to sending unit

7. Daigram of beacon orientation to sending unit w/antennas Beacon orientation

8. Diagram of how distance affects signal strength Signal intensity

9. Dennis Doyle Beacon Types  Analog  Digital

10. Dennis Doyle Analog Output the signal directly with audio or visual

11. Five analog beacons  Barryvox  SOS F1nd  Pieps opti-4  Ortovox F-1  Ortovox M-1

12. Dennis Doyle Digital Process and interprets the signal before output

13. 3 digital Beacons  Arva3000  DTS Tracker  Barryvox Opto 3000 (Red)

14. Dennis Doyle Testing  Inside  Start  Range

15. Dennis Doyle Start  Check Batteries  Check Transmit  Check Receive

16. Determine range Start tests

17. Dennis Doyle Searching  Safety  Phases  Types

18. Dennis Doyle Safety  Search Area  Off / Receive

19. Dennis Doyle Phases I. Locate the signal II. Narrow the search III. Pinpoint / Fine

20. Dennis Doyle Phase I Finding the signal

21. Diagram of range bubble Range globe

22. Diagram of 2/3 range Phase I Signal search

23. Diagram of sample path using range

24. Diagram of how Range covers an area using zigzag search path Range Sweep

25. Diagram of optimal range to search area allowing straight downhill search path to get total coverage Straight down

26. Dennis Doyle How many Searchers  Total available  Area size  Buried beacons

27. Diagram of possible search paths for use with multiple searchers and large slide areas Multiple Searchers patterns

28. Dennis Doyle Beacon Orientation  Types  Planes  When

29. Diagram of 3 planes and reciprocity of direction Orientation in 3 planes

30. Diagram of 3 1/4 planes to be oriented through by beacon Plane reciprosisty

31. Diagram of how to orient the beacon in relation to your body

32. Dennis Doyle Phase II  Narrowing the search  Grid  Tangential  Multiple burials

33. Dennis Doyle Grid search  Signal intensity  Fade point  Bracket

34. Dennis Doyle Fadepoint The spot you are at when you can first detect a decrease in the strength of the signal you are hearing

35. Dennis Doyle Bracketing  Orientation  Volume

36. Diagram of a bracket Bracket Diagram

37. Dennis Doyle Grid search  Across  90 degrees  Fadepoint  Constant volume

38. Diagram of across and up/down of grid search based on signal strength Fadepont diagram

39. Diagram of step by step grid search Grid search diagram

40. Dennis Doyle Tangential  Flux line  Orientation  Signal volume

41. Diagram of 3D flux line projected onto an avalanche path with a tangential line Tang overview diagram

42. Diagram of 3D flux line projected onto an avalanche path with a tangential line without a slide in the background Tang overview Diagram no background

43. Diagram of 3D flux line projected onto an avalanche path with a series of tangential lines leading ot a fine search Tang linked arrows

44. Diagram of run reorient search technique 3 R 2 diagram

45. Dennis Doyle Phase III  Pinpoint / Fine  Interference  2 meter diameter  Snow surface  1/2 bracket  Probing

46. Diagram of importance of getting beacon onto snow in fine search On to Snow surface

47. Dennis Doyle Interference  Sensitivity  Watches  Equipment  Metal

48. Picture of active and passive beacon interference

49. Dennis Doyle Probing  Golden Rule  Equipment  Grid  Tangential

50. Dennis Doyle Golden Rule Probe unto others as you would have them probe unto you.

51. Picture of equipment for probing Probe & Shovel

52. Diagram of tangential and grid fine search probing patterns probingpatterns

53. Diagram of probing angle relative to snow surface Snow surface

54. Diagram of probing at flux search snow intersection

55. Diagram of probing along flux search fine search line

56. Diagram of probing along flux search fine search line at an angle

57. Dennis Doyle Remember  Morning test  Wear it  Everyone off transmit  Find the Signal  Narrow the search  Get on the snow