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Metal Detectors
Minelab
GPX Series Operating Frequency
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<blockquote data-quote="user 12139" data-source="post: 490176" data-attributes="member: 12139"><p>good stuff AuMan, I did the resonance test again, turns out I was a little wrong in my post above. Using a VNA I measured my NF 15" Evo and a ML 11" mono, both came in just under ~1000Khz (the test was done inside, at such low frequencies the wavelength is huge so I'd expect more accurate results testing outside).</p><p></p><p>If I measured two identical coils, and one came in say 250khz lower than the other, from a performance standpoint what would you expect to change? Could you provide feedback to this question please for both PI's and VLF's.</p><p></p><p>I do have some papers relating to fast coils and the design of, I need to read it properly!</p><p></p><p>Thanks again AuMan for coming back on this post, I have a better understanding now thanks to you. Cheers</p><p></p><p> </p><p>AL.</p></blockquote><p></p>
[QUOTE="user 12139, post: 490176, member: 12139"] good stuff AuMan, I did the resonance test again, turns out I was a little wrong in my post above. Using a VNA I measured my NF 15" Evo and a ML 11" mono, both came in just under ~1000Khz (the test was done inside, at such low frequencies the wavelength is huge so I'd expect more accurate results testing outside). If I measured two identical coils, and one came in say 250khz lower than the other, from a performance standpoint what would you expect to change? Could you provide feedback to this question please for both PI's and VLF's. I do have some papers relating to fast coils and the design of, I need to read it properly! Thanks again AuMan for coming back on this post, I have a better understanding now thanks to you. Cheers AL. [/QUOTE]
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Metal Detectors
Minelab
GPX Series Operating Frequency
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