Radio Theory and design

I put a coil. V-cap and diode feeding the amp and found the volume to high. I added a gain control.R15 is a 2K rheostat. It could be place...

Q4 is a preamp. Q3 is a phase splitter. Q1 and Q2 are a push-push amplifier. * connecting a center tapped transformer in the output cir...

The transistor output Z is to high to feed a speaker or headphone. One way to overcome this is to raise the collector current. A higher curr...

I set  the generator to 100 uv at 75Ohms. Half the signal is being dropped in the generator.  I moved the generator and battery on scr...

This is the circuit Ic(Q2) Vbe I bias V emitter Q1 collector current Input and output Time base adjusted to show wa...

Edit: I will have to do some testing but the build doesn't function. The AF is great but the RF amp failed. I may have a bad hookup....

I used the P416 Germanium transistor for the Rf amp. Looks good now to add a detector. The green is the generator output. The blue...