In this post we did a translation of the review of a famous American treasure hunter on the performance of QDII.
The QDII is a great metal detector, but if used in proper conditions.
When used in a type of moist soil behaves great, breaking a lot of depth in remaining states, under these conditions I've found a nice pair of 303 bullets of World War II up to 18/20 cmq, but when you uses in some river beds of fresh water very rough, over the mountains rocky shoreline or in the volcanic detector will be difficult to use.
Under these conditions the unit will beep continuously, so that in some places, particularly mineralized is impossible to keep it running.
In these cases, the unit can still detect deep enough, but you usually have many false signals that force us to go over the plate more times to see the repeatability of the signal and possibly decide whether to dig.
My suggestion, if you want to play with this tool is to use it in the mountains at peak performance in low mineralized soils.
In conclusion, it should take note of the conditions of the land where you are going to brush before you buy this machine is perfect for areas closer to the coast, has been able to find small nails up to 16 cm depth directly under a tower of power lines, then if you brush in an area where electrical interference is expected this detector is excellent. Very recommended for
coinshooting, relics and jewelry, but if you brush in areas with a reasonable amount of iron, tin or any metal mineralization will be dug out a lot, in fact, is not having a huge discrimination.
However, the relation to value for money, say it is a good car light Robust materials and with a decent depth.
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