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  • Originally posted by Esteban View Post
    A magnetic and electric field is another thing.
    What are you telling me???????????????????????????????????????????????

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    • Originally posted by Fred View Post
      Hi Esteban
      So what you are saying is that this effect is nothing more than Earth capacitance effect?
      Occurs on the workbench. But if the capacitive effect acts in this way on the workbench, I select the part (down) with shows capacitance effect near the soil when I use as metal detector.

      For example, I rebuild the coil type O-O. 17 cm diam. each. But transmitter is different turns: 13-6-4-13 turns for transmitter wire 0.18 mm.

      Receiver: 30+30 turns 0.28 mm.

      You note here reduction of capacitance effect with gross wire in rec.

      But here, you don't use omega coil, just O-O.
      Attached Files

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      • Originally posted by Clondike Clad View Post
        What are you telling me???????????????????????????????????????????????
        If the magnetic and electric field near good conductive metals buried for long time is detectable at some distance, so you can consider as a kind of "emission".

        Comment


        • Originally posted by Esteban View Post
          Occurs on the workbench. But if the capacitive effect acts in this way on the workbench, I select the part (down) with shows capacitance effect near the soil when I use as metal detector.

          For example, I rebuild the coil type O-O. 17 cm diam. each. But transmitter is different turns: 13-6-4-13 turns for transmitter wire 0.18 mm.

          Receiver: 30+30 turns 0.28 mm.

          You note here reduction of capacitance effect with gross wire in rec.

          But here, you don't use omega coil, just O-O.
          This looks like the windings required for a GD-48, but what do you mean by "gross wire in rec"?
          Please explain.

          Comment


          • Originally posted by Qiaozhi View Post
            This looks like the windings required for a GD-48, but what do you mean by "gross wire in rec"?
            Please explain.
            GD-48 uses thickness wire in tr. coil and thin wire in rec. coil. For example, a coil with 30 cm diam. in general uses wire 0.45 mm and rec. coil 0.22 mm. Here is contrary: the rec. coil uses thickness wire (0.28 mm) and the tr. coil is made with 0.18 mm wire.

            With this model capacitance effect is reduced.


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            • Esteban, tell me if i am bothering you,

              But what capacitance effect is that? How can you explain that by just turning the coil upside down 6 meters above ground i notice a difference ?
              Also, if you get close to a wall (with soil behind) there is no effect from the wall.
              You can be in a hole, even i a metallic container this effect this still there.

              WHAT IS THIS ??
              Regards,
              Fred.

              Comment


              • Originally posted by Fred View Post
                Esteban, tell me if i am bothering you,

                But what capacitance effect is that? How can you explain that by just turning the coil upside down 6 meters above ground i notice a difference ?
                Also, if you get close to a wall (with soil behind) there is no effect from the wall.
                You can be in a hole, even i a metallic container this effect this still there.

                WHAT IS THIS ??
                Regards,
                Fred.
                Why not... Some bombs explode above ground 6-7 feets, other 120 feets, based on capacitive effect, in water or ground. This reacts at 50-100 feets (27 m to 54 m). Antenna is the nose of the fuse of the aviation bomb. Was published in electronic circuits book by J. Markus. There are more circuits like this...
                Attached Files

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                • Originally posted by Esteban View Post
                  Why not... Some bombs explode above ground 6-7 feets, other 120 feets, based on capacitive effect, in water or ground. This reacts at 50-100 feets (27 m to 54 m). Antenna is the nose of the fuse of the aviation bomb. Was published in electronic circuits book by J. Markus. There are more circuits like this...
                  Thank you Esteban, that is interesting and i will try to find more about those systems.
                  Regards,
                  Fred.

                  Comment


                  • Originally posted by Fred View Post
                    Thank you Esteban, that is interesting and i will try to find more about those systems.
                    Regards,
                    Fred.
                    All I have like this is based on tubes... Let me know if you want these.

                    Comment


                    • Originally posted by Esteban View Post
                      All I have like this is based on tubes... Let me know if you want these.
                      Ok Esteban, thanks, i would like to know at what maximum height such a system could work.
                      But i will search,if i cannot find i will ask you.
                      Regards,
                      Fred.

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