Jump to content

Small Target Comparison Test


Recommended Posts

I took my Whites TDI SL with both the stock 7.5" dual field coil and the 8"x6" NUgget Finder coil, as well as my Minelab GM 1000 out and tried them on some small 1.7 grain and 7.4 grain pieces of lead i use for testing. The minelab found both easily and at over 2" on the small one. The Whites wouldn't pick up either one with either coil. I am liking the Monster more and more. But was wondering? Should the Whites do better than it did?

Link to comment
Share on other sites


No surprises there.The TDI like many PI detectors is weak on tiny gold that a hot VLF will hit. On the flip side a hot VLF will hit hot rocks and struggle on ground a TDI will handle with ease.

The SDC 2300 can meet or exceed many VLFs in the small gold department, especially in bad ground, but it costs three times what a TDI SL does.

Link to comment
Share on other sites

Thanks Steve.

 Yea, i knew the Monster was hot on the small stuff but i really thought the TDI SL would at least hit on the 7.4 gr. piece. Ohh well, it will be fine for larger deeper stuff that the Monster don't hit on.

Link to comment
Share on other sites

Rod

What you have is the early model of the Sadie coil. I had one I let go with a 4500 but done some testing on my SPP before it went. It had more sensitivity than the smallest folded eight that I’m thinking about selling. I have yet had the opportunity to use in the field.

Chuck

Link to comment
Share on other sites

Thanks for the replies guys. I appreciate them.

  • Like 1
Link to comment
Share on other sites

For small gold,  you cant go wrong with a  2300. 

Handles mineralization like a champ and nice depth . And the less mineralized the ground, the more depth you will see. 

Great detector in both ground conditions.

This was some sdc bedrock gold missed by my 5000 running an 8x6 coil.

As Steve said , it  basically meets a vlf in the small gold department.

placer.jpg

  • Like 4
Link to comment
Share on other sites

Nice Gold Wes. Yep, the SDC would be nice to have too.

  • Like 1
Link to comment
Share on other sites

Kiwi, Myself and a bunch of the guys I hunt with  switched to the 2300 for small gold. I will tell you a lot of gold was missed by the gpx series. Why, I dont know, but probably something to do with a fast decay rate of the electric field in certain shapes of nuggets. I know the balance and feel of the detector is really goofy and not the most pleasant to swing, but the electronics pick up where the 5000 left off.  Sorry to hear you had a bad experience with your  2300.  Ive used minelabs since the 3k, including the 7k, and will say the 2300 holds its ground as a top gun. Anyway I always enjoy reading your posts, just my opinions here.

 

  • Like 2
Link to comment
Share on other sites

My experience with the Sadie 8x6 coil on the GPX 5000 is that in general, you were very lucky to get anything less than .2grams even when touching it.  But ... the Sadie had phenomenal depth on everything larger in size.  It really amazed me in this respect.  So it definitely still has a place.

Link to comment
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 Bohemia Miner
      I just watched this Whites Video with Josh Bohmker.  He found a way to take a couple of D-rings similar to those on the old Goldmasters and chest mounted the SL.
      Very cool!

    • By chiil
      I came across a french prospecting website where some interesting mods had been done to their White's TDI SLs.... for instance:
      1. Removal of resistor R86 within the gain circuit - providing a boost to the gain control.  They believe this was to make it stable, for less complaints.  Removal of this resistor provided additional gain reserve.  They had some good results with their testing.
      2. Placing thick o-rings under some of the pot knobs.  Helps to add some friction and avoid dials turning themselves accidentally, especially with the above modification.
      3.  With a single +16V battery pack, there was feedback that depth seemed to increase on the TDI SL.  However, this came at a cost of over-driving the 16V rated power capacitors as well as other circuits on the board.  Potentially shortening their life, by running them full time.  The moderator seems to have been able to add another battery pack in series (6V) with the 12V pack, and use a toggle switch to drive the voltage above 18V temporarily.  This "boost mode" was done as a method of improving a faint signal on-the-fly.  Just a flick of a switch, double-check that faint signal, and then back off.
      Ultimately, it seems they were discussing driving the coil with it's own 18V external battery and using the standard 12V battery pack to drive the rest of the board (logic).  Basically driving the pulses in the coil without going through the voltage regulator, via a large MOSFET.  Unsure if they actually were able to do this mod.
       
      Anyways, just thought they were some interesting ideas those french detectorists were messing with.
    • By chiil
      Hello everyone!  I'm new to the forum and have been an on-again, off-again DFX user for the last ten years (family, kids, work, life, yada yada yada).  I picked up a used TDI SL special edition.  Figured since we moved to Colorado back in 2014 - why not?  I had always wanted one and this one came with a few coils and a Li-Ion converted pack.
      I wanted to ask - I went out to the backyard to give it a run through.  Found a few nails scattered through the yard.  However, I noticed I could not use any type of ground balance, as the machine would start to 'pulse' in my ear and sometimes increase in intensity like a feedback loop.  If I completely turned off ground balance, it wasn't an issue.  I came to find out that the closer I was to my service panel, it would increase.  This would make sense since the power lines most likely pass underground through my backyard.
      My question is: are there any concerns with damaging the front-end receiver on the TDI SL?  It was rather alarming when I flipped on ground balance.
      Thanks in advance!
      Gabe
    • By chiil
      Curious if Sun Ray or another 3rd party vendor made an inline probe for the TDI? 
      Thanks in advance!
      Gabe
    • By oneguy
      Phrunt...  My 6 is headed my way on the big brown truck and the heat will have me sidelined for at least a week.  So with the 6 showing up during the heat wave I'll be sitting out I've decided to shorten up the Monster like you did and retire it temporally as a PP'er for the 6.  Question is this....does all the wire wrapping that close to the 5" coil cause you any problems or make the Monster react any different?  Thanks!!!!
    • By RickUK
      Would like some help please on a specific coil for my TDI Pro,i have the option of buying this brand new Coiltek 6'' Mono coil which was of course specifically designed for the GPX range of detector,the GPX Mono coils do work very well on my TDI Pro as i own and use most of them on the TDI.
      Has anyone specifically used this small 6'' Mono coil i am looking at using it most of the time because i am using smaller coils more and more due to the problems that i am hving with a broken wrist that i had from a bike accident decades ago,does anyone have any thoughts on this combination please.
×
×
  • Create New...