Mark Gillespie

Spoke to soon.  Doesn't seem to be working.

It must have been a very bad crash or they had a cyber attack of some sort.

http://forums.whiteselectronics.com/

I remember back in the day when I received a phone call from Gene Scullion (owner of Badger Metal Detectors) before he went to work for 1st Texas.  He was so excited to inform me that Fisher had released a detector (F75) that was a total game changer.  Mark, you must have one, it will change everything, it will open up your old sites to new finds.  I trusted him completely and ordered a new Fisher F75 and he was 100% correct in his statement.  Prior to this purchase I had either owned or borrowed the very best VLF machines on Earth.  I immediately took the machine to these hunted sites and revealed a huge amount of good targets that the other machine could not respond to.  I know there are many loyal hunters that will stick to 1st Texas no matter what, but I change to the machine that will outperform in the real world.  Since the F75 LTD I have found 2 machines that have excelled in my area, but I still have the Fisher F75 LTD for a backup.?

Just saying.

Imagine where 1st Texas would be, if they'd not latched on to the Manta and the developer in France.  They were in bad need of something new.  Rather, still desperate for something to set them on top again. 

Just saying.

On ‎4‎/‎15‎/‎2019 at 6:53 AM, steveg said:

THANKS, Skate!  Appreciate the info.

And a 2/3 on that ring?  That makes NO sense to me!  A pull tab of similar shape/size would ring up much higher than that!

Steve

I've found gold rings that read very low and in every case there was a slight break the ring.  Applying pressure to the ring while sweeping in front of the coil brought the numbers back to where they should be.

Some obvious and not so obvious.  Take a little time and pull slightly on the ring to see if it has an unseen break.

Without spending huge amounts of money, I've yet to find a single pair of wireless ear buds or head phones that will perform as well as the stock headphones that come with the EQ800.  On some of these units the lag time is totally unacceptable, way to slow, not useable.

4 hours ago, Steve Herschbach said:

From my perspective and others it’s been more like a ten year wait. Nobody feels like it’s been two years. That’s internal information that really does not matter. And after people have waited all this time for a new flagship this still is not it. This is a niche product in a niche market. I did not hear everyone wanting a new beach detector. People want an answer to the Equinox from First Texas. So while this is an interesting product for a few people I don’t think it changes anything in the big picture really. Most First Texas fans won’t care about this detector and are still going to be waiting.

It’s too bad Alexandre won’t post anywhere but Dankowski. The forum has its fans but it barely gets enough traffic anymore to even generate an Alexa ranking. That’s what happens to all forums that let the trolls run loose. People leave. I watch but I will never participate again while trolls like shoveler are allowed to abuse other forum members with impunity.

I usually get to the coast once a year.  Last year I took the Equinox and had a great time.  Found 4 ear ring post, no rings or silver coins but that was not the detectors fault (the beach had been built up from the storm the prior year.  Year before, I took the TDI SL wrapped in a large zip lock bag and found more stuff, silver and rings to boot.  I truly love a PI at the saltwater beach, but I could never afford such a costly machine to hunt 4-5 days out of a year.

By, what I understand this is mostly a beach hunter. 

Seems like the big competitor for the Pulse is

The deep salt capabilities may be hard to beat.

They are well built machines.  I really liked mine.  The audio is super nice.

I've bought from Brian, he's very good to deal with. 

Jim, there's a lot of useful information in your test document.  It's opened up a lot of thoughts for me and my machines.  Thanks for taking the time.

Very interesting information.  Thanks.?

10 hours ago, Jim in Idaho said:

I did a whole series of tests, on the TDI SL, and 16.8v battery. at the request of Reg S. He had particular rules about how the tests would be performed. In a nutshell, the results were a definite improvement in both depth, and sensitivity to small items. But the improvement only came with the larger coil. The smaller coils tested included the MJ 5 x 9,  and the 7,5"DF. Neither showed much improvement over the 12v battery. Reg and I discussed this, and did not come to a conclusion on the reasons. My thought was that the smaller coils are saturated at 12v, and the extra voltage doesn't allow any more current into the generated magnetic field. On the 12"DF, however the improvement was about 20% as I recall. With the 12"DF, my SL can see a 1 grain nugget at 3" in an air test. It can also see a nickel at 16.5". Best depth was with the target moving vertically toward the coil. That was one of Reg's rules for the testing. I had posted all the test results, but don't remember where. This was about 3 years ago.

Jim

Very interesting post.  Thanks for the extra insights as to your testing.  The statement "Best depth was with the target moving vertically toward the coil. That was one of Reg's rules for the testing" is exactly the same technique I used.   I can't explain why I did my test that way instead of sweeping the coin across the coil horizontally.  There is a very noticeable different voltage if I use a fresh set of alkaline batteries.  Good to see you noticed a improvements of about 20% while using the large coil. 

Wow, I've been collecting Jefferson nickels since 1970 and I didn't know about the Henning nickel.

4 hours ago, GB_Amateur said:

Is this what you're looking for?

 

Thanks, I have one rechargeable battery that has gone bad.  Taking my time and cutting the glue loose I can see the case has the capability of holding different kind of batteries with some modifications.  I"m looking into both the Panasonic and Westinghouse batteries.

It might be of interest, the voltage of a freshly charged battery pack is only 11.5 v that is lower than using new AA batteries in the optional battery pack by quite a bit.

Good example of the TDI Pro version.  There might be something wrong with my SL version, but I can't obtain the depth of the PRO version.

That is my own observation using the standard 12" dual field coil with a steady threshold hum.

I can squeeze more out of the machines if I can tame the EMI but sometimes that can't be done.

Careful reading of some of Carl's writings the original TDI and the SL version use the same board and components.  Same circuit regulation and possible outputs.  He admitted the original TDI was quite a bit more sensitive in terms of depth over the SL version.  The main exception is the amount of current applied to the coil TX circuit.  All things staying the same, the TDI might air test (no EMI) a target at 16" verses the SL version (no EMI) 12".  This difference amounts to 25%, which is more than enough, to pursue improved battery voltage related improvements.

Wow, Mike, awesome ring.  I'm sure you found it in a high traffic area.  The F75 LTD is a goo machine too.

Is there anywhere on this site that has the research or post made from Reg Sniff pertaining to
TDI depth in relation to battery voltage?  I remember somewhere that stated the reason the original TDI had greater depth capabilities was the increased voltage of the batteries not necessarily the model number.  It also had information in relations to voltage limits/performance issues.

Just thought I'd ask.

1 hour ago, GB_Amateur said:

One thing I've noticed (but it seems to be controversial here) is that when I ran my 12" mono on the TDI SPP (nominally an SL) without ground balance it detected considerably deeper (in an air test) than with GB on.

Here is a very good in-ground study done a couple years ago in Australia (probably mineralized ground):

https://www.prospectingaustralia.com.au/forum/viewtopic.php?id=21209

Don't miss the second page which has tests with the larger coils.

Yes, you are correct, GB off is deeper and that is the option I take at the beach.

The 12" dual field is by far the deepest coil I've used on my TDI but the heaviest too.  Amazingly the Super Pulse 350 and the 7 1/2 Dual field have about the same depth capabilities.  If you don't mind digging deep holes at the beach the 12" is super. 

But more importantly is hunting areas where the sand is not more than 12" over top of the hard shell pan areas of the beach. 

Look for areas where the sand has washed out small gullies. 

If you're hunting in the very wet sand area where you actually start sinking while standing still, that might not be the best area especially if the hard pan area is 2' down (the heavy gold items will sink until they hit something to rest on).  There is a lot to be said about these two areas.

Hope to take my TDI back to the beach this year.  Gold, here I come.

On 3/8/2019 at 6:26 AM, FWest said:

I just purchased a TDI SL special edition. The unit came with the Miner John  8x12". It seems to do OK at the beach but leaves me wondering if another coil could do better.  Not overly concerned about finding all the tiny bits. Also I find the walking pace when using the 12" mono, for complete coverage, is a challenge for me on the beach.

 

Have you done any air test with this coil?

I know  a lot might say that an air test gives a false impression, but it is a very good starting point for depth capabilities.  I will say, I've found most TDI coils all get about the same air distance with the exception of the 12" dual field.

Awesome pieces of history.