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ground notch video does it affect depth?

C

calabash digger

Guest
on this target it does. [video]https://youtu.be/E7iohImtNso[/video]
 
I've never used ground notch but I find this to be very interesting! I'll try to keep this tidbit of info in mind. Thanks for finding this out for us! You do great work...keep it up!

Charles :usaflag: :usaf:
 
Interesting . . . . . have used it since V3.X was released and in doing in-ground, pre-dig comparisons there is no impact on depth . . .less noise yes but no depth loss.

Andy
 
It didnt do it with all deep targets in my test,I had similar results on a 12 inch silver quarter with version 3 legacy coil and it cut back the signal. Seems to be the ones that are really right at the edge of detection depth. BTW both targets it did this on were silver quarters.
 
TNSHARPSHOOTER conducted a test today and posted them on another forum after he saw my video and came away with same results. I asked could I copy and paste his findings or could he come here and comment on the results he saw.
 
Folks, (Tnsharpshooter)
Calabash 'a video test has merit.
I did test using 9" coil and got similar results.

But using 11" coil, seems ground notch setting has very little effect if any on the deeper nickel I tested.

I used 2 different Deus units ( components) both with V4 loaded.

My take is if you are using Deus with 9" coil,,,,stay away from using ground notch.

This issue here may need more study.
Could I be wrong ? Maybe
But I know what I heard and didn't hear.

I don't have either of the HF coils to test this here.
Just the older 9 and 11 incher.
 
Could this difference noted between the coils, be version 4 driven?

I don't know, I am not about to load 3.2 back into any of my units.
 
Just got in testing an LF and a round HF coil on a V4.X unit and did not see what Calabash did.

One factor that is not being brought into the equation is the ground. Since my daughter lives in the area Calabash does, the ground there is very mild and sandy. Mineralization is not a factor as it is in many other areas. In that case, GROUND NOTCH will not be gaining you much and it seems it might cost fringe signals. Ground here is moderately mineralized - 4 boxes or so on the right hand bar - and using it quiets the unit down. I removed some of the GROUND NOTCH so that it covered where the GB was which was in the 84 - 85 range and did not see any detection loss even on fringe targets.

I plan on going out when it is not as hot as it is now with a V3.2 and a V4.X unit and check the LF coil on both as well as the two HF coils to see if there an impact.

Good example of trying settings in your test garden on the type of targets you are looking for . . . if ground is a factor on what it does, then that is clearly not a "one setting fits all"

Andy
 
My ground where I Tested is medium mineralized, about half scale in index meter.

Deep nickel with ground notch 85-90,,a scratch, ground notch 84-90, nickel tone GONE.
With ground notch not applied a very good signal, tx power 2, freq 18, sens 90, reactivity 2.5, silencer -1, ground balance dialed to actual ground phase, disc O full tones, disc 6 three tones--9" LF coil.
.
 
Will be interesting to see how it plays out in different soils around the country.
 
why do people run ground notch? is it just to quiet the detector a bit?

thanks...
 
thanks,

just for discussions sake say if the ground is reading on most sites between 80 & 90 where would one run the ground notch ?

thanks again...
 
I copied tnsharpshooters test results for arguments sake it is a freshly buried coin but I'm not gonna chance missing a 300 year old piece of silver because of some chirping but hey that's just me. I talked with another fellow who knows the deus very well and he took it to his test garden and did some testing and he said my findings were correct too HERE are tnsharpshooters results.

More testing of ground notch setting,
I drove 5 miles to a clean cut hay field.
Boy it was hot!
External speakers used on all tests.
Took 2 Deus units one wearing 11" LF coil,mother other 9" LF coil.

The test compromise of a freshly buried 10" deep clad some.
Keep in mind, this freshly buried here could skew actual results seen in the wild.
But they are what they are.

First up was 11" outfitted Deus.
I could acquire a diggable signal using reactivity levels 1, 2, and 2.5.
I didn't try any lower settings did try level 3.
Silencer was left at -1.
Bobbing coil here was 4 ticks in The index meter mineral wise.
A pumping ground balance yielded 74, and this is where I kept it.
Sens was at 93.
Audio report 5
Tx power stayed at 2 for all tests using both detectors.

What did I witness.
Even using 18khZ yielded a dig me signal.
Applying ground notch affected quality of signal.
When I would get to 80, signal all but gone.
Level of 85-90, a user had better be on their game to decipher.

Tried freqs 8kh and 12khz.
Using 12khz reactivity 1 silencer -1 sens 93, turned audio report up to 7.
IMO this was the best reportable signal (remember only used to power level 2).

So Imswept this dime a bunch a listening.
Then started applying ground notch.
Again signal,would become increasingly compromised.
Signal quality would,deteriorate and signal (tone) duration would become shorter.
Again approaching levels 80 ground notch, signal gone. Would never know dime was there period.

Now to the 9" inch.
Basically the same as above, but reactivity 2.0 or 1 a necessity to acquire signal.

Now, it begs a question here.
When we talk about depth, how does signal quality and duration play here.
I could make a case the ground notch didn't affect as much if we are talking about any signal really.
But if we are talking about a better quality signal, a more diggable signal when sweeping in the wild, then it is safe to say, don't apply ground notch when looking for deeper targets.

Now, is it possible a deep target could be located using ground notch vs without,,due to maybe Deus running quieter, a little less sparky?
I say yes.
Using ground notch takes all of some of the smoothness out of the signal,hence user may think iron or nail when heard.

But IMO based on my test,,,in my area soil wise, and assuming there is weight assigned here ( remember this was deemed freshly buried) target, I Won't be using any ground notch in the future.
I in the past haven't anyway.

Now if a person is detecting in areas where there are it seems more hot rocks, maybe ground notch will help.
I don't think my areas pose this problem for me
 
did another video on ground notch using a gold earing will have it up tonight or tomorrow.
 
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