Hi blowfly, Happy Boxing Day! Supertuning....hmmm. Threshold's purpose is to give the machine a reference point for tuning the detector to balance it to the ground (or something like that). If you have a machine which can hunt in all-metal, and you are using it to hunt in all metal, then it is important to have the threshold control delicately set so that you haven't tuned out very faint signals (too soft), or that the threshold sound does not mask very faint signals (too loud). However, once you have ground balanced your machine (if it has manual ground balance, like the Vaquero, unlike the Cibola) if you decide to use the machine in Discrimination mode, you can adjust the threshold (either way), but such adjustment will not always be in your best interest. Thurning the threshold right up (supertuning) can give you better responses to targets, but it you are hunting in mineralised ground and haven't balanced your detector perfectly, or the mineralisation has changed slightly since you last balanced the detector, then I imagine the supertuning could lead to undesired results (such as false signals). With a machine like theCibola which has pre-set ground balance, I think that supertuning could be a bit of a hit & miss affair; with a machine like the Vaquero (or in my case, Eldorado Umax) I think it is more important to have the machine properly groundbalanced and the threshold set at a faint hum (ie. high enough not to miss those faint signals) than to worry about supertuning a possibly giving the detector a setting which could possibly make it react to the ground adversely. It's good to try new things, so you could give it a go and so how the Vaquero performs, but I dont see the need to use it with my Eldorado. All the best, Sapper.
