Radio Theory and design

I have read a couple of articles on junction forming that tend to contradict each other. The Bell System Journey helped clear it up a little...

A couple post back I gave some AF amps using TL431 regulator. This one should work with a 78L05. I'm posting it here before I lose it....

These files are from Bell Lab Journal, Hobby magazines and the Defense document Center. They give a couple of methods to make a transistor...

This one is a cut and paste from the datasheet. The other two are modified versions.

I have tried some different mounting methods. Each has it advantage and disadvantage. 3 of the 4 transistors show transistor action. I thin...

The Chief Designer had made the prototype and it worked to well. He said it was a rats nest of jumpers but worked well. He would listen to i...