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Exploring WSPR

Weak Signal Propagation Reporter (WSPR - pronounced 'whisper') is a super efficient digital mode that allows milliwatt radio signals to span paths on frequencies you wouldn't think possible. It achieves this by being both narrow band and ultra-slow. In fact it's so slow it takes two minutes to send a few characters and it's a beaconing rather than a conversation mode.

These videos demonstrate various aspects of WSPR: transmitting, receiving, construction, portable and more.

Homebrew 30m WSPR under test


Homebrew 30m WSPR


Trying portable WSPR (and other modes) with an FT-817


Review: WSPRLite transmitter from SOTABeams


Testing the WSPR Beacon for Ham Radio Android app


Milliwatt WSPR - how low can you go?


10 MHz portable WSPR from the beach


Greyline WSPR from the beach


7 MHz WSPR with kite-supported antenna


HF WSPR from inside a bus - is it possible?


HF pedestrian mobile WSPR gets seal of approval


Use a mobile phone to send recorded WSPR


Recording WSPR for later decoding



These videos show some of the variety that is WSPR activity today. For more information, including a real-time map of what's being heard where, visit WSPRnet. You can also stay in touch with WSPR happenings on Facebook. A simple cable to connect your laptop computer to your transceiver is described here. Reviews of WSPR equipment are elsewhere on this website.



Disclosure: I receive a small commission from items purchased through links on this site.
Items were chosen for likely usefulness and a satisfaction rating of 4/5 or better.


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(c) Peter Parker VK3YE 1997 - 2020.

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