WSPR

 

WSPR (pronounced "whisper") stands for "Weak Signal Propagation Reporter". It is a computer program used for weak-signal radio communication between amateur radio operators. The program was initially written by Joe Taylor, K1JT, but is now open source and is developed by a small team. The program is designed for sending and receiving low-power transmissions to test propagation paths on the MF and HF bands.

VU2YEP is using WSPR which is 

Transmitter Details -
 
Its a stand alone unit, has GPS for time correction and location and Arduino based.
 
WSPR transmitter (3x200mW power on next bands: 40m,30m and 20m) all in one, works simultaneously.

 

This transmitter was gifted to Karan by his good old friend Kurt Smet ON4CHE From Belgium.

 

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