PIXIE 2 QRP 40M TRANSCEIVER
Here is a very nice popular qrp rig.
It is the updated / corrected W1FB version, there are many, many different takes on this radio.
For the history and idea behind this radio, please see
the KA8MAV site:
http://www.qrpp-i.com/pixie2.htm
the corrected schematic is at:
Corrected W1FB Schematic
here are some photos of the project:
the radio operates at 7.035 Mhz output 300 mW.
A great project to learn all about qrp and rf design