Jump to content

Recommended Posts


Very nice setup and it is in your back yard...👍...You can really learn a lot about a detector doing testing and playing with the settings in a test garden ...... Good Luck!

I've had a swing arm (air) test bed for many years. Although not as nice as yours I've learned so much about my machines and target responses. My favorite testing has been head phones and how to get the most out of them, audio wise.

  • Like 4
  • Thanks 1
Link to post
Share on other sites

   Great idea for a compact home test garden! All I have now is a compact portable setup I made to take to the beach! But that can be tough with some beachgoers wanting to know what you are doing!!👍👍

  • Like 3
  • Thanks 1
Link to post
Share on other sites

Looks like a nice set-up and i will have to try it myself for sure. I can use a good system like that to prepare for a good hunt.

Since I don't live near your beach can you please send me some of the sand and water.

 

  • Like 2
  • Haha 4
  • Thanks 1
Link to post
Share on other sites

Yes nice set up I have a similar test garden with 4 boxes filled with different ground thicknesses.  The targets are simply set down under the middle of the boxes. The first boxes are filled with inland mild ground and the 4th filled with sand and salt water. I use these boxes since 4 or 5 years now and they are VERY helpful to test different settings of a machine. Of course field tests are the most important but you learn a lot of things with these kind of test gardens...

On the pics below I was testing the Garrett Apex ..

DSC02627.JPG

DSC02626.JPG

  • Like 7
  • Thanks 2
Link to post
Share on other sites
7 hours ago, Valens Legacy said:

Looks like a nice set-up and i will have to try it myself for sure. I can use a good system like that to prepare for a good hunt.

Since I don't live near your beach can you please send me some of the sand and water.

 

Lots of old swim spots on the rivers in Illinois from what I hear. I'm not sure if your near Tom Hiluxyota but I really enjoy his river hunt video's. 

  • Like 1
Link to post
Share on other sites

On the gold fields depth is greatly reduced. To show beginners how easy it is to miss a target we would punch a hole in the ground and place some lead at different depths and sizes. The area was about 10 foot by 10 foot and would tell them to try and find any targets but not dig them up. Most people found one or two targets after we told them that they had not found all of them, they found three or four more. When we told them there was a dozen targets and showed them were they were, they could get most of them. As the target varied in size and depth some missed the tiny bits and others missed the real deep larger ones. Anyway the point is that you can learn a lot from a well setup test bed, as most of them found gold soon after. 

  • Like 3
Link to post
Share on other sites
16 hours ago, Joe Beechnut OBN said:

I'm not sure if your near Tom Hiluxyota

I'm sorry but I don't know him, as for rivers and creeks around here, there are very few of them.

I have been trying to find some old swimming ponds, not settling ponds, to give it a try, but they are hard to find.

I have hit a few of the city parks that have beaches and still have found only a few coins, but one of these days I know I am going to find a ring.

  • Like 1
Link to post
Share on other sites
On 4/12/2021 at 10:52 PM, ColonelDan said:

99% of my detecting is done on central Florida beaches. Since it’s impossible to establish a well stocked test garden at a public beach, I sorta brought the beach home with me and developed my own private beach garden!

 

I cut slots in two large empty chlorine tablet buckets at various depths as shown from 2 -16 inches. I then filled one with New Smyrna Beach sand and the other with soil...for the few times I land hunt around here.

image.jpeg.b6a939274fa202b0ba200aa9b5e64dc8.jpegimage.jpeg.6288b339c00714b701ce34fcdcfa6e70.jpeg

 

I embedded numerous examples of ferrous and non ferrous targets into paint stirring sticks. I also have several blank sticks I use for gold and silver jewelry as well as artifacts that I don’t want permanently attached to a stick.

image.jpeg.7986808b277a20528583608e1c57434c.jpeg

 

I then insert the target(s) in the slots, each at its desired depth, and start scanning.

 

image.jpeg.291280afbf0713c35196734f30981acf.jpeg

This allows me to rapidly change the targets, depth and relative position of each.  I can now test for sensitivity at depth as well as separation of ferrous and non-ferrous targets in a variety of scenarios using actual beach sand where I do my detecting.
 

If I want to test in wet salt sand, I just soak the bucket sand with authentic sea water that I also brought home from New Smyrna Beach...and the Atlantic Ocean never even missed it.  😉

 

Works for me.....

 ColonelDan ....you did very well ,,, such tests of detectors and coils will move you quickly in the acquired knowledge of the detection capabilities of their detectors as well as various coils very forward ...

This is mainly because you have created a certain standard in the test room, which you can then repeat 10 times for verification to accurately verify the results obtained.

  Thus, from randomly good settings of the detector or a suitable coil after repeated testing .... very stable detection results are obtained, which you can really rely on in field detection ...👍:smile:

IMG_3220.JPG

IMG_20200412_152430.jpg

  • Like 2
  • Thanks 1
Link to post
Share on other sites

Just one important thing when setting such bed tests ; ensure that there are NO iron bits remaining in the ground that will be used for testing.  Otherwise the results will be falsed. The ground must absolutely be iron free ..

 A detector in the all metal mode can be used for extracting the iron bits before filling the box/bucket ..

 

  • Like 1
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Similar Content

    • By GB_Amateur
      This is a topic relevant to every(?) form of detecting -- ground coverage.  I'll list several questions concerns I've had but any replies of course aren't limited to these, nor do they need to address  any of them.  Just tossing out some ideas to prompt further discussion.
      1) What methods and efforts do you apply to ensure full ground coverage in the cases where that is one of your goals?
      2) Is your sweep a straight line path or an arc?
      3) How long is your sweep?
      4) How much do you overlap consecutive sweeps in the direction you walk?
      5) How much do you overlap side-to-side swings when following parallel paths (e.g. when walking two side-by-side swaths in the same direction how much does the left end of one path overlap the right end of the next path or vice-versa)?
      6) Have you ever measured your coverage?  How well do detectors with GPS (e.g. Minelab GPZ-7000 and Minelab CTX-3030) monitor ground coverage to this detail?  Have you used other devices to measure ground coverage.  E.g. I can imagine a drone with camera could provide useful data.  Are there smartphones app that would help quantify coverage?
       
    • By nebulanoodle
      Just dreaming...
      What'dya think? Minelab technology going on the next moon mission?
      X6 must be space-worthy.
    • By AUgetter
      If this question has been addressed elsewhere, I apologize in advance and hope someone can give me a link for it.  I have noticed that other companies besides Minelab are coming out with PI detectors for less than $3K.  How do these detectors compare to the best Minelab detectors for Gold and also relic hunting?
    • By JCR
      On the Anfibio Multi (and I think Kruzer & others) there is a definite step in sensitivity between 39&40 Gain and again between 69&70 Gain. Is this a change in the Internal Threshold? In a way this would be the inverse of the way the F75 adjusts sensitivity according to Mike Hillis.  Regardless, it is a very good set up in difficult sites. Most NM users know about the difference in response speed between 89 & 90 Gain on 3DI. This is different. I had read about these steps in a forum post that quoted Alper of NM. I can't seem to find that post now that I want to re read it.
    • By jasong
      https://patents.google.com/patent/WO2021016649A1/en?assignee=minelab&scholar&oq=minelab&sort=new
      This is the most out of this world Minelab detector patent I've ever read. There is so much here, some very sci-fi like, I don't even know where to start. My takeaway is they seem to be positioning themselves for a drone based detector eventually (main details in this patent could be easily transferred to a drone based platform - IMU, GPS, magnetometer, heads up display, FPV, remote control, robotic/vehicle mount, etc) . That is 100% a guess. But in the meantime, there is some interesting, novel items in the pipeline that we might actually see on a machine in closer future?
      No clue if this is a coin machine or gold machine or if it's something they are actually working on right now or just trying to get control patents on such things for the future which may or may not arrive. One thing is for certain, Minelab is BUSY in the engineering department. A few of the highlights:
      Heads up display over glasses/head mounted display (aka augmented reality). Settings, target visualization, shading of detected/not detected areas (I asked for this specifically 5 or 6 years ago here, awesome to see it in a patent now). Plus a camera showing the coil (why would you need that if not operating remotely as from a drone?) The detector has a camera, IMU (accelerometer) and magnetometer to determine position with accuracy. The IMU tracks the position of the coil in real time in relation to both the ground and the target, and combined with the camera video feed will provide a "visual" of the target in the ground through the glasses/head display, as in form of a heat map which increases accuracy with each pass of a coil over the target. A GPS tracks the machine position to properly map the IMU/coil visual target data on the ground and let's a user see the mapping as they detect. This data is recorded for future historical use and can be shared.  Centimeter accuracy with the visual target heat mapping. Potential operators/users include entities other than humans such as "robots" and "an AI (artificial intelligence) using a metal detector" and this line: "The metal detector may be handheld, mounted on a robotic arm of a vehicle or a robot."  Wireless connectivity to computers and phones, transfer of files containing settings configurations from instructors or expert users Remote control of the metal detector through apps on laptops or phones Ability to upload maps, including detecting data, historic human activity, buildings, or other items that seem to indicate custom mapping capability Internet connectivity, potential control through the internet (again, why if not for a drone type device?) "Teamspeak" to other detecting members in the area wirelessly Visual/spatial discrimination Accurate depth measurement Synthesized audio mode, eliminating noise completely and allowing the detector to "recreate" a synthetic audio stream based on data from prior swings Delayed audio processing (enhanced audio) mode or real time audio mode, ability to seperate multiple close targets, reason for this I venture a guess why below ---> This patent actually seems to be describing a completely new method of RX in a detector. Which is actually similar in some ways to the wacky idea I had years ago of reducing EMI/ground noise by emulating a radio telescope array. But in this case they appear to be describing a fairly ingenuous method of doing something similar with only one coil by monitoring RX of the same target at different points in the swing (with the IMU tracking these points) and combining all those RX signals. In this way (and this is my guess, the patent doesn't explain this), you can form a sort of comparator, gradiometer, or interferometer to seperate the wheat from the chaff, so to speak. If that's what they are doing, then I find it to be brilliant. If not, then I just gave them one hell of an idea to patent for the future. 
      That probably sounds like jibberish to non-engineers. But I want people to understand the brilliance in simple terms. Consider this: EMI is random. At any given point in your swing you'll get noise here, but not there. So if you compare two points in the same swing, you will hear noise one point but not the other point because the "zap" already ended. But you might hear a good target at both points in the swing since it's not random like EMI, it's always there in the ground. So, you can effectively eliminate EMI by comparing what signal is not there at two very close points in the swing, and keep the target since it's always there.
      Similarly, with ground, the ground changes as the alluvium changes since soil is inhomogeneous. But a target is still the target. So, a similar method can be applied to the ground.
      In theory, you could use ideas like this to essentially get rid of the Difficult type timings and keep your gains boosted high, and deal with EMI/ground in this way instead which does not require reducing sensitivity. A totally new, novel approach to RX in a metal detector. The audio processing is very slightly delayed because they are using that time to compare measurements at a few different coil positions before letting the audio processor signal that there is a target present. That's my guess. If that isn't what they are doing, then someone else should patent that and thank me for it later when Minelab buys it. Either way, they have something totally new in the RX department here. And the future of detecting looks bright and interesting to me still.
    • By WhiteRabbit
      Hello, now here’s an opener that might just get me banned on my first post!
      Bear with me, my intentions are pure :)
      Does anyone know if it would be possible to jam an MD signal? The reason I ask is to combat the evident problem we have in the UK with “nighthawks”, illegal detectorists.
      Over here, any landowner can grant permission for detecting on their land (with caveats, known historic sites are protected by law). What often happens is that such a permission is granted and a detectorist innocently sets about his / her business. Someone less scrupulous spots this person and assumes there may be something important there, so shows up at night with a couple of friends and the landowner awakens to a field / lawn full of holes, then bans metal detecting.
      Historic sites are also looted.
      Just an off the wall question, how tricky would it be to build a device to block this on a piece of land? Anyone any ideas?
×
×
  • Create New...