LRLs are based on a pseudoscientific concept. The principles are untenable and unfalsifiable (or at least difficult to disprove) and rely solely on anecdotes as evidence. LRLs do nothing for the advancement of metal detecting technology. All the evidence is subjective, and their claims do not stand up under close scrutiny.
So why do some people persist in an irrational belief in such quackery as "ionic detection" and "dowsing", to mention two of the most popular subjects on this forum? The answer appears to be purely psychological, and consists of a combination of
selective memory and
self delusion.
For Hung, the Mineoro has become "so last year", and he's now moved on to greater things. i.e. a modified Ranger Examiner.
Although exactly how a cheap calculator glued to the top of a plastic case, and mounted on a swivel handle is supposed to detect anything is completely unclear. Goodness knows what the "modification" actually comprises. Maybe the calculator has been remounted with epoxy glue for greater stability. Who knows? This device is nothing more than a dowsing rod that has been dressed up with some nonsense electronics in order to trap the unwary. Buyer beware!
Have you also noticed how these "expeditions" are never undertaken using only LRL "technology"? There is always a trusty "conventional" metal detector there to save the day. The expedition usually begins with some careful research to get the treasure hunters in the right ball park. The LRLs are then used to subjectively confirm that this is the right location, and (of course) they all give consistent results.
Next the real metal detector is used to locate the treasure, and finally the LRLs get the credit.
Such is life...