Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Charts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Metal Detectors
General Metal Detector Discussion
Noisy Ground after rain
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Prospecting Australia:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="SteelPat" data-source="post: 172190" data-attributes="member: 4467"><p>I was out yesterday with the Zed in ground with a very high ironstone concentration and it was very wet. The machine was unusually noisy but it wasnt just ground noise.</p><p>The noise was still there if I raised the coil. (This incidentally is a good test to see if its ground noise or emi. Raise the coil about a meter off ground. If noise is still there its emi related).</p><p>I dont usually have this issue. I tried it at home (also on wet ground) and there was no issue.</p><p>What I have put it down to is the wet ironstone formed like a giant antenna/reflector that amplified/concentrated the EMI. It seems that the more sensitive the machine (we are talking PI machines here), the more it is an issue. </p><p>I have yet to prove this but maybe if I have a quiet day at work I will put it to the test.</p></blockquote><p></p>
[QUOTE="SteelPat, post: 172190, member: 4467"] I was out yesterday with the Zed in ground with a very high ironstone concentration and it was very wet. The machine was unusually noisy but it wasnt just ground noise. The noise was still there if I raised the coil. (This incidentally is a good test to see if its ground noise or emi. Raise the coil about a meter off ground. If noise is still there its emi related). I dont usually have this issue. I tried it at home (also on wet ground) and there was no issue. What I have put it down to is the wet ironstone formed like a giant antenna/reflector that amplified/concentrated the EMI. It seems that the more sensitive the machine (we are talking PI machines here), the more it is an issue. I have yet to prove this but maybe if I have a quiet day at work I will put it to the test. [/QUOTE]
Verification
Post reply
Metal Detectors
General Metal Detector Discussion
Noisy Ground after rain
Top