From my Twitter feed: Tindie, resonant speaker

blackrockcastle's avatarBlackrock Castle @blackrockcastle
@WIRED: An inside look at Tindie, a thriving new marketplace for DIY gadgets wrd.cm/Rlnkbt pic.twitter.com/pZzItSsUpz@ado_collins

 

n1pce's avatarJohn Ryan @n1pce
April 2014 CQ Plus – Adding Volume With a Resonant Speaker youtube.com/watch?v=nLFPAj… via @YouTube

 

kc5fm's avatarkc5fm @kc5fm
My New Favourite Social Network Is Ham Radio | Business Insider bit.ly/1k5fGIx #ARRL #hamradio

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