https://kicp.uchicago.edu/education/explorers/2002summer-YERKES/pdfs-sum02/background.pdf
http://scitoys.com/scitoys/scitoys/radio/radio.html
http://boyslife.org/search/?q=amateur+radio#gsc.tab=0&gsc.q=amateur%20radio&gsc.page=1
https://sites.google.com/a/ztlearn.com/wrh/radio-kids/ar-wiki.png
http://www.oldradio.com

 
http://boyslife.org/games/online-games/575/morse-code-machine
http://morsecode.scphillips.com/translator.html
http://lcwo.net
 
 
▼ Esotechteric- Techie Stuff 
Esotechteric
  
 
diy-maker
http://makezine.com
https://www.ifixit.com
http://www.pinterest.com/annelizabeth31/engineering-construction-and-fix-it-fun-for-kids
http://sewelldirect.com/articles/simple-machines-and-electronic-projects.aspx


http://www.arrl.org/kids-day

  
 
http://www.globaltuners.com
http://livehams.com/
http://v2.sdrspace.com/Version-2/Listening
http://gnuradio.org



  
http://www.learnelectronicsonline.com
http://components.about.com/od/Theory/
http://www.falstad.com/circuit
https://www.partsim.com
http://www.falstad.com/circuit
http://www.electronics2000.co.uk/calc/