Hi Seden,
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Originally Posted by Seden
J-Player,first of all I'm surprised at you not reading carefully my post. As I mentioned to Elie, I'm trying to find a rationale of how Andreas LRL works with his Tesla Coil antennas.
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Actually I did read the posts about Andrea's LRL that were presented with photos by Esteban. I figured you made a mistake, as there is no Tesla coil in Andrea's LRL. The circuitry which was posted shows a radio transmitter sending power to an antenna at 800 khz, and receiver that filters the antenna signal before detecting, then buffers and amplifies the signal and sends it to a field intensity meter and an audio circuit. But there is no circuitry or apparatus that could be connected to a Tesla coil in any way. I have no clue why Estaban made a comment about Tesla coils in that thread, but it was certainly unrelated to Andrea's LRL. There are also missing parts of the circuitry according to Andreas which include a preamp stage for the antenna, a dummy load circuit, and detail drawings of the antenna. None of these missing drawings includes any components of a Tesla coil.
The device Esteban displayed as Andreas project is a transmitter and receiver, similar to other LRL devices like the Vernell Electronics VR5000 and others. In the case of Andreas LRL, he is not willing to divulge details of how to build it and tune it, or any other details of the principle of operation. Therefore we can only conclude it is an 800 khz radio transmitter and reciever that works in some mysterious way to locate treasures. We know approximately the same information about the Vernell Electronics LRL devices.
The concept of broadcasting white noise and observing the changes in spectrum that is picked up with a receiver is a similar idea to broadcasting a fixed frequency and sensing signal strength in different locations. The white noise advantage is you have more frequencies broadcast, and are limited only by the receiver in what you can pick up. A major disadvantage is you don't have the ability to tune to a known frequency and continually follow an uninterrupted signal to see where its strength becomes stronger or weaker. You are depending on random occurrences of a given frequency. If I wanted to investigate what frequencies could be picked up more prominantly in the presence of a buried target, I would prefer to have good control of the broadcast frequency. That is, I would prefer to use a transmitter whose frequency could be adjusted over a range while tuning a receiver to follow the transmitted frequency. It may take several transmitters to cover a band such as the UHF band, But still I would prefer this method, not only because of the better control of transmitter frequency, but also because of the possibilities of observing things such as phase angle changes, fluctuations in frequency as well as amplitude, finding harmonics that appear only with certain frequencies, and because of the ease of dealing with known radio technology.
This is not to say that there is some valuable information to be derived from observing broadband noise changes in the presence of a buried target. I may be overlooking important aspects of a white noise signal, but my thinking is that the end result would be to find some specific frequencies that behave differently than neighboring frequencies. And I think if this is the result that you will find, it should be much easier to discover using standard radio transmitter/receiver methods rather than white noise spectrum analyzing.
As far as using a very high voltage for long range sensing, the most useful application of a Tesla coil that comes to mind is building up an artificial electric field which is many times stronger than the natural atmospheric field. A properly designed network of Tesla coils could convert an unsearchable acreage to prime hunting condition for those who want to use static and ionic sensors. Certain atmospheric conditions must exist in order for this scheme to work, but they would work in 80% of the earth's land masses when weather conditions permitted. Also the design, configuration and operation of these coils must be done in a way that does not introduce new interference into the field to be searched. In theory, such a network of high voltage coils and auxiliary apparatus would effectively counteract many of the "atmospheric interference" outages that prevent LRLs from working.
But to use a Tesla coil as a component of a hand-held LRL is a different story. There may be a few home brew Tesla coil based LRLs in existence, but I found little information on them. There is one post in this forum which shows a rare Tesla coil LRL for sale here:
http://thunting.com/geotech/forums/s...ighlight=tesla
For Elie, if you are really disturbed about our LRL conversation referencing an unrelated patent on a Tesla coil, consider that radio transmitters and receivers are not related to any LRL patents that I know of, yet this forum is full of conversations and schematics showing radio transmitter and receiver methods. There are also posts in this forum about who won the soccer championships, not exactly related to long range locating. If you truly believe we shouldn't be able to talk about long range locating using a Tesla coil, you can click the little red triangle at the top of the post and plead for Carl to remove our posts. Or perhaps you can reveal some other unknown purpose why you came here? Certainly not to contribute anything of value to the topic of sensing white noise from a Tesla coil?