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Metal Detectors
Minelab
Minelab GPX4500 tips, settings, questions
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<blockquote data-quote="mbasko" data-source="post: 247648" data-attributes="member: 4485"><p>Lee is right & on re-reading your post/s it does seem a little unclear if you are sure whether it's ground noise or EMI? You need to know so you can tune or balance it out effectively.</p><p></p><p></p><p>I would auto tune first & go from there. These machines are designed to pick the best channel for you & IMO using suggested settings may not work in different areas let alone the same area all the time. </p><p>Also if you select Motion: "Slow" (or very slow) and Audio Type: "Quiet" then Search Mode: "Deep" on your front-end cap unless you have changed the "Deep" search mode to your own preferences it will revert back to the factory presets of Motion "Very slow", Audio type "Deep" & a preset gain of 9.</p><p>This is why it's recommended to:</p><p>1. Select an appropriate Search Mode</p><p>2. Select the desired Audio Type</p><p>3. Adjust Rx Gain until the threshold starts to break up</p><p>4. Adjust Stabilizer to smooth out the threshold.</p><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="mbasko, post: 247648, member: 4485"] Lee is right & on re-reading your post/s it does seem a little unclear if you are sure whether it's ground noise or EMI? You need to know so you can tune or balance it out effectively. I would auto tune first & go from there. These machines are designed to pick the best channel for you & IMO using suggested settings may not work in different areas let alone the same area all the time. Also if you select Motion: "Slow" (or very slow) and Audio Type: "Quiet" then Search Mode: "Deep" on your front-end cap unless you have changed the "Deep" search mode to your own preferences it will revert back to the factory presets of Motion "Very slow", Audio type "Deep" & a preset gain of 9. This is why it's recommended to: 1. Select an appropriate Search Mode 2. Select the desired Audio Type 3. Adjust Rx Gain until the threshold starts to break up 4. Adjust Stabilizer to smooth out the threshold. :) [/QUOTE]
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Metal Detectors
Minelab
Minelab GPX4500 tips, settings, questions
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