NOTE: this chart is comprised of TID readings from air-testing hundreds of coins with three different detectors, using the stock coils. Air tests are not necessarily representative of the TID numbers you will encounter in the field. Ground conditions, adjacent targets, angle that the coin is laying, sweep speed and other factors can (and will) affect your results. However, this information should provide a good basis for getting you started.
Remember, when you set specific target properties to be rejected, the detector still detects them. As such, you will be able to see each target's image in the SmartScreen. However, when rejected, the CTX 3030 will not provide an audio response on those targets. Instead, the audio will null out (target blanking) the Threshold. That is just one of the reasons we recommend setting your Threshold to a "barely audible" level. Also note that the TID numbers for BIG SILVER coins will vary with the Separation Settings. So when you build a new Search Mode, don't reject targets based solely on the TID numbers of one particular Separation mode. e.g. 12 FE line.
In discussing this with Minelab, we were provided the following explanation...
Ferrous-Coin Target Separation ID variation for silver dollars
Highly conductive targets, such as US silver dollars, can give different target ID
Remember, when you set specific target properties to be rejected, the detector still detects them. As such, you will be able to see each target's image in the SmartScreen. However, when rejected, the CTX 3030 will not provide an audio response on those targets. Instead, the audio will null out (target blanking) the Threshold. That is just one of the reasons we recommend setting your Threshold to a "barely audible" level. Also note that the TID numbers for BIG SILVER coins will vary with the Separation Settings. So when you build a new Search Mode, don't reject targets based solely on the TID numbers of one particular Separation mode. e.g. 12 FE line.
In discussing this with Minelab, we were provided the following explanation...
Ferrous-Coin Target Separation ID variation for silver dollars
Highly conductive targets, such as US silver dollars, can give different target ID