@ Seden
Hi Randy, this is a good point but you need to find real working discoveries in the field of "para-physics" or cross sciences. The work of Russian engineers indeed could be intersting, but there also is alot of very doubtful information available.
You can read books like:
Warfare with PSI (PSI Agents) (Parapsychological forces)
Montauk Project
Philadelphia Project
Visitors from the Future
Subtle Energy (John Davidson)
or stuff about anti-gravitation, scalar-waves, particle physics or quantum physics. I was fascinated by all this stuff already as I was a teenager, I read so much about strange and unexplainable phenomena, mystic, the occult, mediums, spook, asian wonder-monks, strange or unknown energy-forces up to unbelievable psychic powers.
Per instance clocks very often start to stand still, if someone dies in the same room or nearby, sometimes even many miles or kilometers away, at exactly the same time (sometimes before, as some kind of warning). I read books about levitation, pyramid power and about the secret lifes of plants which seem to be able to feel if a person nearby intends to destroy the plant (Tompkins & Bird, Secret Life Of Plants). Those attached some very sensitive instrument to a plant (EEG or ECG) and could see that it react directly when they just thought to destroy the plant.
So perhaps we should attach such stuff to plants or trees and ask them for the treasure locations!
But there is alot superstitious and unproven crap in the wide field of psychic powers or "soul forces". We all know Uri Geller and his spoon-bending shows. Was it for real or was it just a huge circus? At least he refused to let test his abilities under scientific conditions, but on the other hand his shows were for many many years on the TV, worldwide.
Seen from the laws of physics the more distant is the find and the weaker is the contrast factor (caused by depth, high mineralized soil or just very weak available surrounding EM-fields), the harder the detection from a distance will be.
btw. I have 2 interesting ideas that could work but of course alot of engineering and improvement work must be done:
1. higher voltage
2. larger EM-field spectrum
1. is simple to explain:
Wire works like a resistor, it consumes energy and transfers it into temperature (by the electric current the metal electrons are forced to move and this movement creates "heat")
Metal dectectors with high voltage, at battery- and coil-level, have better depth. This is a proven fact. The main reason why most metal-detectors are using only up to 12v at the electronic parts side is the fear of "high voltage technology". If we are able to create a detector that works with 100v inside the box and with 50.000v at the coil-level we can create much higher directional magnetical pulses who are able to reach much larger distances. Per instance with directional parallel ferrite coil antennas or with cylindrical-air-loops.
It is also a question of the used frequency and modulation, because the eddy-currents of the detected metal have a similar skin-effect as it is with high-voltage where the electrons flow just over the surface if the frequency is high enough.
2. also is simple, but more complicated and I don't know if it works:
We know that you can use long waves but also a frequency up to 300 MHz for "ground radar". The world is full of all those waves. So the idea is that some "multi-band-EM-field" detector, some sort of full-frequency-range-receiver, combines and adds all those waves so there is a very strong and therefore contrastful energy-field available as reference-value. Now, if the detector comes near to a buried metal object, the summed up energy field of the frequency from Long-Wave to 100MHz etc. shows clearly strong changes of field-strenght or polarization or even special curves which are typical for special kind of metals or finds. It's stupid to use one little weak frequency like 77.5 kHz in Europe as the source for the whole EM-field-change-analyses if you can have much higher field-strenght for much more sensitive EM-field-evaluation.
Per instance the combined EM-field force of the summed up and added short-wave-senders would be 20x times stronger than the 77.5kHz time pulse and the short waves from 2-15MHz will penetrate the ground quite good, too. Many countries have very strong FM-programs from ca. 85 to 110 Mhz. The frequency-modulation could be a problem and the relative short wavelenght in relation to the field-strenght, too, but I can imagine that also with the whole energy of all the transmitters from this band an useful level of groundpenetrating energy-strenght could be available.
Finally a real working long range detection method if the ground is not stony and too tight or hard:
Take a very long and thin steel rod and poke it into the ground!!!
If the rod is 10meters and you poke into desert sand you may indeed detect buried stuff that is 10m away!
Actually this technique is no joke, it was used in the 19th century for real to locate buried stuff! Just the rods or iron-poles or lances just were 2meter or 6 ft long. But today with some hitec materials like very lightweight and extreme tough carbon-fiber poles some real deep buried things can be reached, per instance in deserts, swamps or snowfields. Similar poles are also in use to find buried person under avalanches. Perhaps if a very thin but powerful ferrite-rod coil is attached to the tip, connected by a long wire inside the staff, even metal in the vicinity of the pole would be detectable.
A very good long range detection-method also is....
A large coil attached to a car, SUV or mounted on a little roller!
That way within a few minutes you can detect the stuff that is miles away and everything inbetween - if you're on the right track....
Personally I think the real fascinating and realistic "long range detection" will be those with 2 huge coils! I'm using already some very deep coils, but those are just 1m "small", but at some locations like in Egypt or in arabic deserts with sunken cities in the sand a really large coil, consisting of 2 coils of 2m diameter, in "oo" combination, could provide absolute amazing depth results!
Imagine how you drive with some dune-buggy around the desert, with a huge 3.5m large coil rolling behind you. Absolutly faultless!
Its the best you do this at a rich arabic country like Saudi Arabia etc. where the sheikhs can help you with excavators or a company of dig-workers.
But so far the only thing that sheikhs have to do with LRL is by not working LRL-devices from OKM or Mineoro or other "magic-box-producers". Perhaps most of the LRL-crap goes there, because they have so much money for new "toys", so they don't care if it costs 1000s of bucks, those are millionaires or even billionaires, anyway. And Germany or Brazil is too far away to send some "money-back-bringers" there, after they found out that this stuff doesn't work.
The best LRL-detection still is by eye-sight - and the best prevention against not working LRLs, too - if you can read this forum.... !