One year ago My husband and I decided to try our hand at metal detecting.We were total newbies with a steep learning curve. We purchased a used Xterra 705 for our starting machine. We downloaded and printed Randy Horton’s Xterra guide and have read it many times. It is a valuable tool for any Xterra owner. We spent the last year educating ourselves on the basics of metal detecting and getting to know our machine.
We are feeling pretty confident about the Xterra except for one issue. I am looking for advice on any errors we are committing or if we possibly have something wrong with our detector. We have contacted minelab, but they never got back to us about our issue. So here goes...
We are having an issue with TID numbers with in ground silver. We have several old silver coins we use for testing. They air test perfectly per published Xterra TID charts. When we place a coin (dime, quarter or half dollar, doesn’t matter) in a dug plug and cover, the coins register as ferrous (-8, -6 or -4) every time regardless of the coil we have installed. We have the stock 9” 7.5 kHz and the 6” 18.75 kHz Double D coils. We cannot get silver to register as anything but ferrous in the ground. The depth does not matter.
We usually run in all metal or discrim 1 on occasion. We go through a set up each time we arrive at a place to detect that includes noise canceling, threshold, sensitivity and manual ground balance, although we usually detect in auto ground balance. We use 99 tones and silver in the ground has a ferrous “thunking” sound to go along with the TID numbers.
We have reset to factory setting several times in the hope of solving this issue to no avail. We are out of ideas and possibly need service. Thank you for reading this far. Any advice or suggestions are welcome and appreciated.