7 MHz DSB QRP transceiver: circuit walkthrough
 

A 4 part series describes a 6 transistor/1 IC double sideband transceiver
for 40m. Uses many common components. The 'Beach 40' starts of as 8
transistors and then gets some mods along the way.

http://www.youtube.com/watch?v=siSgeljr4HE

http://www.youtube.com/watch?v=U-HwpizjvFs

http://www.youtube.com/watch?v=c-Zte_J7O1M

http://www.youtube.com/watch?v=mLCbnL5e_VA

73, Peter VK3YE