Friday, June 7, 2013

WSPR (amateur radio software)

Hello Everyone,

Lets check out a new software used the Amateur Radio World. Its called WSPR which is pronounced as WHISPER. The abbreviation of WSPR when expanded is "Weak Signal Propagation Reporter"
Some facts about WSPR
Developer(s)Joe Taylor, K1JT
Initial release2008
Development statusactive
Written inPython (GUI), Fortran, C [1]
Operating systemCross-platform
Available inEnglish, Italian, Spanish, French, German, Japanese, Polish, Portuguese, Russian
TypeAmateur radio and DSP
"Courtesy: Wikipedia"

WSPR was developed by Nobel Winning Astrophysicist JOE TAYLOR in 2008 under University of Princeton. 

WSPR is a piece of software that enables you to participate in a world-wide network of low power propagation beacons. It enables your radio transceiver to transmit beacon signals, and to receive beacon signals from similarly-equipped stations in the same amateur band. Participating stations usually upload spots that they receive in real time to a web server, you can find out within seconds of the end of each transmission exactly where and how strongly it was received, and even views the propagation paths on a map.

How to use it:
•       There are two modes
•       Receiving & Transmitting
•       Here we are discussing about Receiving mode

Required things
1. SSB Radio
2. Personal computer with a sound card and WSPR 2.0 software
3. Working Internet connection

How to Listen:
1. Connect SSB Receiver  with sound card
2. Connect PC with internet and sync the internet time
3. Run the WSPR 2.0
4. Select receive mode
5. Wait for even minutes and identify the signals in waterfall display

Format of Data:
 After receiving the signal, WSPR software will decode it and will display the data
1. Call sign
2. Location of transmitter
3. Power used for transmission
4. After reception WSPR software will upload the location in to WSPRnet server and it will generate a MAP

Technical Specification:
•       1. Modulation used : Continuous FSK
•       2. Channel Bandwidth : 6Hz
•       3. Baud Rate : 1.4648 bauds
•       4. Total time taken for transmission 1.54 minutes
•       5. Length of data send over channel : 50bits
•       6. 28 bits for call sign
•       7. 15 bits for location
•       8. 7 bits for power in dbm

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