The PSK-series Transceivers
PSK-20 PSK-30 PSK-40

Click on the image for more information.

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The 'Warbler'
A simple PSK31 transceiver for 80M

Small Wonder Labs supplies the popular 'Warbler' Kit (March 2001 QST). Click on the image below for more information. 

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Dave Benson, K1SWL
Small Wonder Labs
updated 4/06/07