How new technologies affect the art of contesting
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How new technologies affect the art of contesting

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This presentation was hold by Tobias, DH1TW during the Contest University 2010 in Friedrichshafen, Germany

This presentation was hold by Tobias, DH1TW during the Contest University 2010 in Friedrichshafen, Germany

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  • 1. How new technologiesaffectthe art of contesting
    Tobias Wellnitz, DH1TW Friedrichshafen
    Tobias@dh1tw.de June 2010
  • 2. Agenda
    Comparison (1970 vs 2010)
    InformationHandling
    Software Defined Radio
    PersonalizedUser Interfaces
    Conclusions
  • 3. Contesting: 1970 vs. 2010
  • 4. Let‘s have a look into the past
    CW
    Skimmer
    SDR
    Band-scopes
    Station
    Automatization
    Stack-
    Matches
    PacketRadio
    Transistor PA TRX
    CAT
    PCLogging
    2000
    1990
    1980
    2010
  • 5. Information Sources
    1970
    • Radio (Audio)
    • 6. Logbook
  • Information Sources
    2010
  • Information Sources - Comparison
    2010
    1970
  • Information Quality vs Quantity
    Increasing Quantity
    Decreasing Quality
    Wrong Spots
    CW-Skimmer
    Internet DX-Cluster
    Fake Spots
    Busted Spots
    Reverse Beacon Network
    local spots
    situational unimport spots
  • 23. Lets play a game!
    50:50
    Amount of RBS / Skimmer Spots in CQ WPX CW 2010?
    A: 12000
    C: 293000
    D: 850000
    B: 68000
  • 24. Lets play a game!
    50:50
    Amount of RBS / Skimmer Spots in CQ WPX CW 2010?
    A: 12000
    C: 293000
    D: 850000
    B: 68000
  • 25. Some more numbers on WPX CW 2010
    41 CW-Skimmers
    in 21 Countries
    DX-Cluster
    RBN
    Total Spots
    ~39700
    ~837900
    Callsigns
    8240
    21300
    WPX Multis
    2118
    2942
  • 26. So what? Is it….
    Good or Bad?
  • 27. So what? Is it….
    Good or Bad?
    It is different!
    New information handling strategies needed!
  • 28. Information Fusion
    Algorithm
  • 29. Algorithm Example
    Check Master.dta
    No
    Yes
    Check QRZ.com
    Yes
    No
    Trash
    Spot
    Sent to WinTest
  • 30. Single Source Concept
    also applies to radio handing!
    • Avoid duplicate information! (e.g. Frequency)
    • 31. SDRs improve station integration!
  • The classic Radio concept
    Signal
    Processing
    User Interface
    RF
    Operator
    Radio
  • 32. The SDR concept
    Signal
    Processing
    User Interface
    RF
    Independency of components!
  • 33. Example: Softrock Receiver & PC
    QSD (e.g. Softrock)
    IQ (stereo)
    0…96kHz signal
    PC with Soundcard &
    SDR Software (eg Winrad)
  • 34. Example: Softrock Receiver & PC
    Signal
    Processing
    User Interface
    RF
    Operator
    PC with Soundcard
    & SDR Software
    QSD (e.g. Softrock)
  • 35. Why haven‘t SDRs taken off yet?
    Advantages
    Great RF performance
    Great experimentation plattform
    Very flexible
    Inexpensive
    But…
    PC needed
  • 36. How future solutions will look like
    Headphone
    DSP &
    Interface
    RF Part (SDR)
    Control
    Data Processing
  • 37. How future solutions will look like
    User Interface
    RF
    Signal
    Processing
    Headphone
    User Interface
    RF Part (SDR)
    DSP &
    Interface
    Control
    Take aways:
    • Real-Time Classification
    • 38. Personalized User Interface
    Data
    Processing
  • 39. Conclusions
    • Information Handling is becomming more and more important
    • 40. SDR need to become reliable & foolproof
    -> Real-Time / Non-Real-Time classification
    • SDR provide the freedom to design your customRadio / Station User Interface
  • Follow me!
    Twitter:
    DH1TW
    Website:
    www.dh1tw.de
  • 41.
  • 42. Backup Slides
  • 43. Example #2 Dutch WebSDR
    PC with Browser
    WebSDR Server
    Direct Sampling Receiver
    with Direct Down Converters
    PC with Browser
    Internet
    IQ Signals (Ethernet)
    7 Bands simultaneously
    PC with Browser
  • 44. Example #2 Dutch WebSDR
    User Interface
    PC with Browser
    Operator
    User Interface
    Signal
    Processing
    RF
    Operator
    PC with Browser
    Internet
    WebSDR Server
    Direct Sampling
    Receiver
    User Interface
    PC with Browser
    Operator