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Mate the only time I would not want to hear a steady threshold was if I was using the TDI or Coin or Jewellery hunting in an Iron filled site because I would only want to here the low or high conductors, Apart from that I would always want to hear the softest of thresholds, with the volume up high and the threshold very very low, But never nulled

As for the GB you want to GB the machine and then tweak it slightly so it just starts to rise as you get the coil closer to the ground,

With the TDI SL it has what I call the smoothing effect when the GB is switched ON, The TDI Pro has this but it only does it when the GB is turned OFF, you can see that in Action with some Guys TDI Beach detecting Tips on youtube, But the TDI SL does that when the GB is switched ON so even though you off set the GB the TDI SL will settle down giving you a smooth threshold as long as you keep the coil at the same height all the time that way you can run it a bit hotter and some of the those phantom signals will be gone,

But if you off set the GB by a larger amount say from 8 to 9 some targets that are low conductors will come through as high conductors and vice versa, This is not a quick thing to learn but it is worth playing with in the back yard so you can understand and then put it to use out in the Bush or on the beach,

Hope that helps.

J.

<blockquote data-quote="Ridge Runner" data-source="post: 536730" data-attributes="member: 3775">Mate the only time I would not want to hear a steady threshold was if I was using the TDI or Coin or Jewellery hunting in an Iron filled site because I would only want to here the low or high conductors, Apart from that I would always want to hear the softest of thresholds, with the volume up high and the threshold very very low, But never nulledAs for the GB you want to GB the machine and then tweak it slightly so it just starts to rise as you get the coil closer to the ground, With the TDI SL it has what I call the smoothing effect when the GB is switched ON, The TDI Pro has this but it only does it when the GB is turned OFF, you can see that in Action with some Guys TDI Beach detecting Tips on youtube, But the TDI SL does that when the GB is switched ON so even though you off set the GB the TDI SL will settle down giving you a smooth threshold as long as you keep the coil at the same height all the time that way you can run it a bit hotter and some of the those phantom signals will be gone,But if you off set the GB by a larger amount say from 8 to 9 some targets that are low conductors will come through as high conductors and vice versa, This is not a quick thing to learn but it is worth playing with in the back yard so you can understand and then put it to use out in the Bush or on the beach,Hope that helps.J.</blockquote>

[QUOTE="Ridge Runner, post: 536730, member: 3775"] Mate the only time I would not want to hear a steady threshold was if I was using the TDI or Coin or Jewellery hunting in an Iron filled site because I would only want to here the low or high conductors, Apart from that I would always want to hear the softest of thresholds, with the volume up high and the threshold very very low, But never nulled As for the GB you want to GB the machine and then tweak it slightly so it just starts to rise as you get the coil closer to the ground, With the TDI SL it has what I call the smoothing effect when the GB is switched ON, The TDI Pro has this but it only does it when the GB is turned OFF, you can see that in Action with some Guys TDI Beach detecting Tips on youtube, But the TDI SL does that when the GB is switched ON so even though you off set the GB the TDI SL will settle down giving you a smooth threshold as long as you keep the coil at the same height all the time that way you can run it a bit hotter and some of the those phantom signals will be gone, But if you off set the GB by a larger amount say from 8 to 9 some targets that are low conductors will come through as high conductors and vice versa, This is not a quick thing to learn but it is worth playing with in the back yard so you can understand and then put it to use out in the Bush or on the beach, Hope that helps. J. [/QUOTE]

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