finderskeepers
Hero Member
- Jul 26, 2012
- 546
- 261
- Detector(s) used
- Boxes on sticks, that go beep
- Primary Interest:
- Metal Detecting
Coils...how the heck do they work.
What I think I know...concentric coil is actually 2 coils, a send & a receive. Signal is sent (in a spherical direction) from coil, part of which penetrates the ground. Receive coil...does it "know " that a signal has been sent and is listening for a response OR is it in a constant listen only mode, relaying any signal heard , back to the machine?? I guess I'm also having trouble wrapping my head around the "directional" aspect here. I tend to think of the signal in that way that throwing a stone in the pond creates waves that head outward from the source and then wondering how the receive coil hears these waves that are heading away from it?
What I think I know...concentric coil is actually 2 coils, a send & a receive. Signal is sent (in a spherical direction) from coil, part of which penetrates the ground. Receive coil...does it "know " that a signal has been sent and is listening for a response OR is it in a constant listen only mode, relaying any signal heard , back to the machine?? I guess I'm also having trouble wrapping my head around the "directional" aspect here. I tend to think of the signal in that way that throwing a stone in the pond creates waves that head outward from the source and then wondering how the receive coil hears these waves that are heading away from it?
Amazon Forum Fav 👍
Last edited by a moderator: