By Steve Herschbach
The whole depth with single frequency VLF detectors thing in my opinion has been nothing but a red herring for decades. I have read a thousand posts from people wanting VLF detectors with "more depth". Yet VLF detectors maxed out for usable depth by at least 1990 if not before. I have not used any single frequency VLF metal detector since 1990 that got more depth on coins than my old Compass Gold Scanner Pro.
The only real improvement we have seen and are still seeing is in the ability to find and correctly identify items that are masked by the ground itself or adjacent undesirable targets. There are an amazing number of targets in the ground at depths achievable by any decent detector made in the last 25 years, but that are being missed because they are improperly identified and ignored, or just completely masked and invisible. This is an area where the Minelab BBS and FBS detectors have excelled. They do not go deeper. They simply get more accurate discrimination at depths exceeding what most detectors achieve. Machines like the DEUS and a lot of other Euro machines are excelling not for the depth they get, but this ability to acquire and accurately identify targets at shallower depths that are missed by other detectors.
If we had a detector that could simply see through everything and accurately identify coins to 10" the ground would light up with countless missed finds. I get a chuckle out of all the deep coins I see people talk about on the forums when the best detectors made can't accurately identify a dime past 5-6 inches in my soil. Anything deeper just gets called ferrous. There is huge room for improvement in metal detectors still not by getting more depth, but by simply finding shallower targets that have been missed by other detectors made up until now.
How To Make Yourself Crazy!
U.S. Versus Euro Style Detectors
From what I can gather, higher frequency VLF detectors are more suited for smaller gold but ground mineralisation may be something to factor in. Would there be a “better” frequency for nuggets 1 gram and above in heavy ground?
I’m not too concerned if I miss sub gram nuggets if there is a better suited frequency.
The old Garrett Groundhog circuitry was legendary in this country…..I think it was around the 15 kHz mark. Is this frequency range a good starting point or do I need to consider other things such as better ground balancing capabilities or Garrett’s extra coil voltage.
My Minelab PI units will be mainstay detectors but as mentioned in another post, I have ground littered in man made iron junk and the ground mineralisation is severe. There are plenty of nuggets in the 1 gram to 5 gram range (maybe bigger) but the iron signals are as dense as 5 per square metre 🤬
Thanks for any ideas.
After the good new I realized when tested a few days ago my machine after It drowned and I've succesfully reanimated It....
Now the horrible gasket Is fighting to stay out of the housing against any kind of attempt😒.
So I'm in the middle of a headache manutention session with scarce results.
That's the Mood guys😑
Manufacturers Making Updatable Detectors Should Imo Allow Models To Accommodate Multiple Software VersionsBy Tnsharpshooter
Don’t know any other better subforum to place this.
When manufacturers design make sure platform can allow at least 2 software versions or at the very least allow what I call both newer version update (whole) and a older subset (portion of older version) to be used.
Makes testing easier if and when a newer version is designed and requires pre release testing in the field for validation. Would allow users after version release to use different versions and gain first hand feedback of the benefits or lack thereof of different versions or version subset(s). Case in point. Notice Minelab left old iron bias to be user selected when they released newer version with iron bias F2 option.
So in a nutshell this allows the detector versions ( or version subset) to be compared to the themselves in the field by the user.
Xp should have done this too. They should have designed Deus imo where at least 2 complete version allowed to be uploaded to unit.
Notice the later released Ace Apex. Garrett should have allowed on it too.
Don’t know what added production cost this would cause. Hopefully not much.