Radio Theory and design

It was to sensitive and need some high frequency attenuation. I connected an antenna and could adjust the pot to a point I would hear ra...

This project is to use MOSFET and JFET amps. It works so well in sim I will have to assemble one. First the circuit. R11 is the volume co...

Let's look at the load vs output.  10 ohm. 20 ohm. 30 ohm. 40 ohm.  10 ohm 20 ohm 30 ohm 40 ohm Now a lo...

I stepped R to see the effect the load value had on power output. With a higher load Z the output is nW. The 50 ohm load receive...

I made an amp with a transformer on the output which works well but I thought I would build one without the transformer too. The problem is ...

If you have followed my blog you will realize I like circuits that are easy on the battery. So I may sacrifice a little performance to conse...

This is the basic idea. I have made a couple on a breadboard and they perform well. I think I could use 2 for preamps on my scope and mak...