How new technologies affect the art of contesting

How new technologiesaffectthe art of contesting
Tobias Wellnitz, DH1TW Friedrichshafen
Tobias@dh1tw.de June 2010

Agenda
Comparison (1970 vs 2010)
InformationHandling
Software Defined Radio
PersonalizedUser Interfaces
Conclusions

Contesting: 1970 vs. 2010

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

Information Sources
1970
Radio (Audio)
Logbook

Information Sources
2010
Radio 1 (Audio + B-Scope)
Log
DX-Cluster(s)
own CW-Skimmer(s)
Reverse Beacon Network
Propagation Models
…

Information Sources - Comparison
2010
1970
Radio (Audio)
Logbook
Log
DX-Cluster(s)
own CW-Skimmer(s)
Propagation Models / Charts
…

Information Quality vs Quantity
Increasing Quantity
Decreasing Quality
Wrong Spots
CW-Skimmer
Internet DX-Cluster
Fake Spots
Busted Spots
local spots
situational unimport spots

Lets play a game!
50:50
Amount of RBS / Skimmer Spots in CQ WPX CW 2010?
A: 12000
C: 293000
D: 850000
B: 68000

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

So what? Is it….
Good or Bad?

So what? Is it….
Good or Bad?
It is different!
New information handling strategies needed!

Information Fusion
Algorithm

Algorithm Example
Check Master.dta
No
Yes
Check QRZ.com
Yes
No
Trash
Spot
Sent to WinTest

Single Source Concept
also applies to radio handing!
Avoid duplicate information! (e.g. Frequency)
SDRs improve station integration!

The classic Radio concept
Signal
Processing
User Interface
RF
Operator
Radio

The SDR concept
Signal
Processing
User Interface
RF
Independency of components!

Example: Softrock Receiver & PC
QSD (e.g. Softrock)
IQ (stereo)
0…96kHz signal
PC with Soundcard &
SDR Software (eg Winrad)

Example: Softrock Receiver & PC
Signal
Processing
User Interface
RF
Operator
PC with Soundcard
& SDR Software
QSD (e.g. Softrock)

Why haven‘t SDRs taken off yet?
Advantages
Great RF performance
Great experimentation plattform
Very flexible
Inexpensive
But…
PC needed

How future solutions will look like
Headphone
DSP &
Interface
RF Part (SDR)
Control
Data Processing

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
Personalized User Interface
Data
Processing

Conclusions
Information Handling is becomming more and more important
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

Backup Slides

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

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

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How new technologies affect the art of contesting

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How new technologies affect the art of contesting — Presentation Transcript