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Firstly, the machine has to be Ground Balanced and this is quite tricky to achieve if you go about it in a heavy handed way. It is critical however that you get it right. Before this procedure you will need to set the Ground Mode switch into Manual and then the Gain at 1. Threshold should be at the point where the machine just goes silent. Many people advocate putting the Threshold down much lower before Ground Balancing but I always think this is just helping to disguise the fact that you don’t have it quite spot on. Also, you need to put the V3 into the all metal mode and this is done by turning the Discrimination Level and the Discrimination Depth (DL, DD) at the 0 position. You will reset these two adjustments after Ground Balancing. DL to about 4 and DD to 8.8.
The slightest turn of the Ground Coarse knob can make quite a difference so the secret is to start it in the 5 position and then scroll it very slightly to the right or left with your thumb whilst bobbing the coil. Direction of turn depends on the mineralisation level of your ground, but you may well finish up with it at around the 7 position. If your detector is objecting and the sound whilst bobbing is getting worse then maybe you have ground that requires that you need to set the knob lower than 5. You just have to experiment.
As a new user, do not be tempted to put the Gain up higher than 1. Yes Gain amplifies the signals from targets but at the same time it also amplifies ground noise and iron falsing. You
will not miss signals with the V3 and you don’t need to be listening out for whispers- it signals loudly on everything, no matter what depth! I’ve had my V3 for eighteen months and have rarely put the Gain above 2.
Set the Frequency at Max and leave it there. It only needs adjustment if you are somewhere where you encounter extreme interference such as might come from pylons or some other makes of detector. Tone can be at 6 but you can change this if you prefer.
Set the Discrimination switch to position 3 and my advice would be to leave it there. This will help you to get used to the sort of sound a nice target makes as opposed to a piece of iron.
Of course, there is always the option to choose one of the three automatic Ground Balancing positions. You will need to remember to put Ground Mode into the Auto position before carrying out the bobbing procedure and selecting which of the three positions seems best.
A couple of further points are worth remembering before you set off to search. Coke has to discriminated out if it is a problem, whereas hot rocks, if there are a great deal of them, require Ground Balancing out.
Well, as they say, a picture is worth a thousand words and there are excellent videos to be found on other forums which demonstrate the above, especially the best way of holding the Bliss whilst carrying out the Ground Balancing proceedure. If you are anything like me your mind will go blank once standing in the field, so it’s well worth jotting the settings down before you set out. If you do dig up nails or odd bits of iron- or even hot rocks bring them home and experiment in air in order to become familiar with the sound that deceived you or to see how the GB knob can be adjusted knock them out.
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Two mad dogs
Not enough time in fields :-( too far from the beach :-(
Not enough Land :-(