How would I couple the output of an amplifier from an oscillator to an antenna?

H

hilo890

New Member

• Jun 1, 2011

• #1

I am using a 1 MHz crystal in a colpitts oscillator circuit. I have no idea how to couple the output into an antenna though.

 

crutschow

Well-Known Member

Most Helpful Member

• Jun 1, 2011

• #2

Why do you want to do that? It's likely illegal.

 

Sceadwian

Banned

• Jun 1, 2011

• #3

Definitely illegal, and you could easily find this information on Google if you wanted to.

 

H

hilo890

New Member

• Jun 1, 2011

• #4

I was planning on using an antenna that would only broadcast it about 5-20 feet or so. And I have searched Google for an hour, mulling the exact search phrase over and over, and I cannot find anything at all that answers the question exactly. That's why I came to forum.

 

T

trash

Member

• Jun 8, 2011

• #5

I'd use solder

Ok, capacitively couple it. 1nF should do it from the emitter or collector, source or drain which isn't common.
Inductively coupling, 4 or 5 turns around the ferrite, one side to earth, the other to the wire.