Hello,
I found this great book by Frank W. Harris, KØIYE who basically donated it to Hams. It is a treatise on homebrewing QRP rigs.
http://www.wa0itp.com/crystalsetsssb.html (http://www.wa0itp.com/crystalsetsssb.html)
Gil.
Wow, that's quite a book! Thanks for posting that Gil. To have a chance of understanding how the complicated stuff works, you need the fundamentals (simple stuff) and that book has a lot of that in it. I just added it to my library.