Hittade detta från TAPR:
A discussion on the HPSDR-list contained a list from Open Source
evangelist Bruce Peren’s talk at the TAPR Forum in Dayton which
provides supplier sources of relatively inexpensive Open Source”
hardware.
Some of the specific hardware projects listed include:
+ OMAP L138. (TI chip with ARM and a DSP both on board)
http://tinyurl.com/5wb8ocz
+ Papilo FPGA
http://tinyurl.com/3xnfne8
Also there is a 32-channel logic analyzer for $50 there.
+ Arduino http://www.arduino.cc/
+ $15 CPLD (you can build things from 74xx series gate equivalent
logic): http://tinyurl.com/6h28olw
+ Bus Pirate
http://tinyurl.com/47as6x9
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[ANS thanks George K9TRV and Bruce Perens for the above information]