The term <EM><STRONG>Power Balancing</STRONG></EM> is one I have used for many years to explain how you can set the GB of many detectors using the <FONT COLOR="#ff0000">Discriminate</FONT> mode.
Naturally, this is not going to apply to any model that has a factory preset GB for the Disc. mode. It will apply to those models featuring circuitry whereby the manual GB adjustmnt of the All Metal mode also provides the reference for the Discriminate mode.
Sometimes you might find yourself hunting a site where, for whatever reason, you have a problem setting the GB in All Metal. <span style="background-color:#ffff00;">To "Power Balance" do the following:</span>
► Try to locate a spot of ground where there isn't any interfering metal target.
► Make sure you have a proper slight audio threshold setting in All Metal.
► Set the Sensitivity as high as possible w/o chatter and interference.
► Select the Discriminate mode.
► Hold the search coil about 6"-8" above the ground to start.
► Bob the coil towards-and-away from the ground, quickly lowering the coil from the 6"-8" height down to about