Tesoro Cibola Metal Detector
Information On The Cibola Metal Detector by Tesoro
We have not have any problems with the Cibola as we had with the Vaquero, which is closely related in that neither one has a manual GB. we have been able to detect on the beach in both dry and wet sand. In dry conditions, we had the threshold and sensitivity set to their highest level, and in wet conditions, we had to turn them down to lower the interference.
The Cibola is best in older areas. Do not dismiss the dim sounds, as we have found mercury dimes 7 to 9 inches deep without any issues. On smaller objects that are deep, the pinpoint is not very effective. It seems to null when the item goes past the middle part of the coil. We mark the area and dig without using the pinpoint, and we typically find what we're looking for.
In regards to ground balance, depress the PP and adjust the threshold until you get a faint buzz about waist high. Then, drop the coil onto the ground. If the buzz is not altered, then you are fully balanced.
Cibola's Discrimination
In regard to discrimination, the detector is effective at ignoring iron. I have attached a silver coin to a nail made of iron and it was able to easily detect the coin while ignoring the nail. The more you practice with the Cibola, the easier it is to determine whether or not to dig (unlike the TID detectors which do it for you).
Many treasure hunters have noted the Cibola picks up aluminum even if the discrimination is at its highest level. If we came across a shallow object and don't hear a double beep, we will lift the coil up 8 or so inches. If we still get a powerful beep, we know that we have probably found aluminum, particularly if we are hunting in an old area.
What We've Found - at What Depth
We have executed a few tests with the coil that comes with the metal detector. Using a sensitivity of 10 and the threshold positioned at 1:00 with a faint buzz, and the discrimination set on iron with US clad coins: nickels detected at 9 inches, dimes detected at 7 1/8 inches, quarters detected at 8 inches, and fifty cent pieces detected at 9 inches.
When we turned the threshold and sensitivity all the way up, nickels detected at 12.5 inches, dimes detected at 9.75 inches, quarters detected at 11 inches, and fifty cent pieces detected at 12 inches. Gold was detected at the same depths as were the nickels. These tests were performed on a table made of wood with headphones.
The detector had a fully-charged battery. We determined the depths from the point when the detector first made a sound at the maximum depths with the settings listed above. Dig as soon as you hear the first sound.
In conclusion, the Tesoro Cibola detector, priced below $400, performed admirably.
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