flakmagnet Posted January 24, 2017 Share Posted January 24, 2017 I get GPZ signal responses on targets (gold or like-sounding pieces of lead etc), that are both high-low and low-high using the same settings. Can anyone educate me as to why both signals produce gold - even though the signals differ on similar size targets (mostly small), at the same relative depth? Thanks! 1 Link to comment Share on other sites More sharing options...
Steve Herschbach Posted January 24, 2017 Share Posted January 24, 2017 The tones are merely an artifact of the ground balancing system. Depending on where the ground balance ends up at, possibly in conjunction with other settings, you will get either a hi-lo or lo-hi tone. In general hi-lo means small target and/or low conductive (short time constant) and lo-hi means large target and/or high conductive (long time constant). Whether a target is lead or gold or whatever is not part of the equation per se except as relates to metal conductivity. Since the ground balance point changes depending where you are responses can change. Different ground modes will also change responses. Similar responses can be had with any ground balancing PI detector. A person, with enough time in a given area, may learn that certain tones correlate with certain targets. Dangerous territory but it can be done. For instance, small gold normally goes hi-lo. Large iron junk normally goes lo-hi. This can help in areas where large nuggets are not likely. But a large gold nugget and even some smaller, round, solid nuggets will go lo-hi, hence the danger. When in doubt - dig it out! 3 Link to comment Share on other sites More sharing options...
fredmason Posted January 24, 2017 Share Posted January 24, 2017 I am always in doubt so I always dig it out! fred 1 Link to comment Share on other sites More sharing options...
klunker Posted January 24, 2017 Share Posted January 24, 2017 I can tell, with over 90% accuracy, weather a target is a nugget or trash. I just declare every target to be trash. If I get tired of digging trash than I simply go detecting where there is no trash. 3 Link to comment Share on other sites More sharing options...
fredmason Posted January 24, 2017 Share Posted January 24, 2017 Low expectations do increase the happy factor when the trash turns to gold...you are a wise ....man. fred 2 Link to comment Share on other sites More sharing options...
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