[J_Player]

Originally Posted by Götz von Berlichingen

Your definition of LRL is different from mine.
Until now, i understood LRL exactly as the Wikipedia Article .
2-Box and Magnetometers would be something different... and how about a PI with extra large Coil ?
Thank you for the detailed Answer, i guess i learned something from you.

I have never defined geologists tools or 2-box detectors as LRLs. I only say they are capable of locating buried metals at long range. (This is in comparison to the range that a standard metal detector can locate metals).
And I say BFO uses known theory of operation for up to 25 feet detection distance (eddy current detection).

This is the Remote sensing forum. Not the LRL forum.
Remote Sensing forum was opened for both kinds of devices. See the sticky note at the top of this forum:

The term "remote sensing" is used to describe scientifically viable methods of detecting geophysical anomalies from a distance.
It is also used to describe the less scientific method of "long-range locating", which is engulfed in controversy.
This forum is for the open discussion of either method.

There is nothing new to learn.
The large pi coils, magnetometers, VLF survey receivers and other equipment used to actually detect known physical properties of the earth's subsurface are all included for this forum, with the hope that someone will develop modifications that make these methods more suitable for treasure hunting.

The other kind of remote sensing (LRL) is also permitted in this forum for people who want to experiment to see if they can make them suitable for treasure hunting. LRLs are exactly the same as what you read on the Wikipedia page.
I consider any device that can locate buried metals at a longer distance than a standard conventional hand-held VLF or PI metal detector to be capable of long range locating. This includes most of the geologists subsurface survey tools, 2-box, and large PI coils. These and other tools are commonly used to locate objects as well as earth composition below the surface at long range (in comparison to a hand-held metal detector). The less scientific tools that people have labeled LRL have not been proven to locate buried metal at long range, nor do I believe they are long locators until I can actually see them perform this function and convince me they can locate at long range. If you believe these LRL devices really are long range locators, you are free to believe as you choose.


Best wishes,
J_P