ac2sl:
I am trying to build something that can pick up EMF in a room but detect when something like a walkie talkie button gets pressed.Before I had the circuit in the enclosure it would pick up on the EMF and because the color of the LED was based on the difference between inputs anytime I pressed the walkie talkie button then color would alert me.
I will try to draft up a circuit schematic but it's basically based on this..
I eventually want to get to the point where I read off the antenna and make a static snow image on an lcd or maybe even tv screen to get idea how the fundamentals of tv work.
Your original structure was a SHIELD protecting your sensor from the mains EMF. Now it is exposed to to all emf. If you want to differentiate one EMF signal from all the others, you need to add a TUNED CIRCUIT to your sensor probe so it can reject all by the signal you want. That is how a radio works. I have no idea what you mean by the fundamentals of TV. Do you mean the old analog TV or the current digital TV?
Paul