Quote:
Originally Posted by Mike(Mont)
Tip #22: The signal line always extends past the target depending on signal strength by as much as 200 feet (60 M). But usually several feet. If you have a weight cancelling device attached to the rods set it just before the target is eliminated and you will be able to get a more accurate pinpoint. Or you can connect a 100K - 250K potentiometer between the rods. For a gold ring I set mine to about 40K and still give a good signal. Don't go any lower than a 100K potentiometer or you might get a weaker signal during weak conditions. 250K is better. At full resistance you get the strongest signal. Practice with a visible test target before attempting this in the field.
When you have it adjusted close to eliminating the target the rods will only close partially. This way you know you have it adjusted correctly. Only do this after you have located the signal line. It depends on locating conditions as to how you set this. If conditions are weak you might not even need it at all. Once you find the line you will need to make a few passes while adjusting so the rods partially close. Conditions are different every day so you need to adjust each time you go out. If you have too many targets you can adjust it to eliminate some of the small stuff before you find the good line.
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Another important note: The amount of weight filtering you get from the potentiometer or power module depends on how much you angle the L-rods down at the tips. I know it is tempting to hold the rods level to get a response,but you need to angle them down or you will be detecting insignificant targets and mineralization. So angle the rods down 10 - 15 degrees for best results. It will likely take much practice to achieve this. Good, smooth-working rods can help along with a light, relaxed grip.
Also note that when the rods are angled down it is easy to prevent them from moving so you have to watch out for this. Once the rods start to move you want to relax your arms and allow the rods to move, but don’t force them.
Even with weight filtering the signal can still extend 10 - 15 feet (3 - 5 m) past the target.