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Reference Designs (17) More Reference Designs

• 
  emmdev / A Circuit used to measure distance through the use of radio waves

  http://www.instructables.com/files/orig/F3V/KH3R/GLFUDO8C/F3VKH3RGLFUD...
  Last updated September 29, 2011
• 
  paulogp / sq0018: Galena

  Rádio

  • Galena
  Last updated March 21, 2012
• 
  braveheARRt / Economical Transistor Radio

  http://www.extremecircuits.net/2010/10/economical-transistor-radio.htm...
  Last updated October 4, 2011
• 
  mpilchfamily / FM Listening Bug

  Small FM transmitter that will fit in an Altoids Smalls tin.

  • FM, 
  • Transmitter, 
  • bug, 
  • listening device
  Last updated October 30, 2012