Set your audio at the 3 o'clock position. That may seem hi but at that frequency you will be able to distinguish iron targets from good ones (with a bit of practice). A lot of guys set Disc 1 to knock out foil, and then rarely use the Alt. Disc. But it depends on what you are looking for and thats what is nice about having a second Disc. Set it above Tab if you want to check if you target is a coin. For most relic hunters just want to know if its iron or not.
You will need good headphones with the Tejon, to hear the subtle audio characteristics. It does have a laguage. Good targets have a smooth repeatable signal (no mater which way you sweep the target) and the deeper ones will be very faint, but still repeatable. You must have it ground balanced slightly positive, which means you get a slight increase in volume as you lower the coil to the ground. When ground balancing, pay no attetion what it sounds like as you lift the coil off the ground, only the sound as the coil is lowered to the ground. Periodically check it, just to be sure. Its relatively easy once you have done it a few times.
Set your sensitivity as high as you can with out it being unstable (chirping). Turn it up until you hear it chirping and then back it down until its quiet. On my machine that is usually 9.5 or 10 on the dial. You can not "supertune" the Tejon, its already been internally supertuned.
Dont be surprised, you will get some targets that sound "loud" and you may think they are shallow. Its not uncommon for targets 5, 6, and 7 inches deep to give a loud signal. The Tejon is also killer on coins and buttons on edge, so take it back to your favorite "hunted out sites" and you will be pleasantly surprised. Junk and Iron targets have real "snap" to them, a real sharpness but some big iron or round iron pieces (rings, washers, etc.) will fool you. With practice though, you will know by the sound for the good targets have a real smoothness to them.
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