An Accidental radio?

JimB said:

Try googling "rf amplifier" I got over 7 million hits.

JimB

Click to expand...

I google "amplifier" and I get NONE hits.

JimB said:

Try googling "rf amplifier" I got over 7 million hits.

JimB

Click to expand...

I think tat you need a tuner to detect a range of freqencies and then a freqency-controlled-voltage curcuit.

ps whats a foster-seeley detector?

EDIT I googled foster seeley and found it. I thout of it before I knew its a foster seley and I thought its just too simple to work but IM USING IT!

catcat said:

I google "amplifier" and I get NONE hits.

Click to expand...

WHAT!

You are pulling my wires!

See the attachment.

JimB

catcat said:

I think tat you need a tuner to detect a range of freqencies and then a freqency-controlled-voltage curcuit.

ps whats a foster-seeley detector?

EDIT I googled foster seeley and found it. I thout of it before I knew its a foster seley and I thought its just too simple to work but IM USING IT!

Click to expand...

Hello,
Before you start FM, you should have "heavy" studies on AM, transistors, diodes, amplifiers, rf...

Every radio has a detector.
What is a detector?
Detector is what "extracts" the audio frequency from the modulated radio-frequency waves.
To detect AM is quite simple, because it's amplitude modulated and the frequency is always the same.
FM is more complicated, the amplitude is aways the same, but the frequency always changes according to the AF modulation.