two box metal detector discrimination

[sheekh]

HI VERY BODY I am asking if there is possibility to make tow box metal detector with discrimination
if not what are reasons - it good thing TO discus.
REGARDS
SHEEK

[kt315]

two box has low depth. in DISC mode two box has yet below depth.
it does not have a possibility to increase TX power.

[Carl-NC]

A 2-box is just an IB system, so the general answer is 'yes' you could add disc to it. However, a 2-box cannot be swung like a regular detector so if you were to implement targeting filters they would have to be pretty slow. The other option is an old-fashioned TR-disc mode. In either case, you will need to already know how to design IB metal detectors to succeed with something like this.

[Skippy]

You would probably have more success modifying a conventional detector to operate as a two-box, rather than making everything yourself.
I did seriously consider doing this to my Fisher F75, which has a very good non-motion mode ( like a permanent pin-point), but with target ID still active. In the end, I thought it would probably be better to just make a very large conventional DD coil. [ but so far I haven't made either of these projects a reality .......]

Another possible detector to consider for this modification is one of C-Scope's non-motion discriminators, like the CS1220XD , though they have made other less advanced models that are similar.

[sheekh]

thanks Carl , kt ,& skippy
regarding these tow boxes it can be design to discriminat but in special way
this idea came to me after some information from kt to increase Vp-p SO i do some trials from my home made tm808 and I notic the preformance for the dievce increase so much better by 25%
in terms of depth and sensitivity just fo 10 vP-P EXTRA .
I do test for cash around 200 ml liter of coins in plastic container but I not that the device can see this at 50 cm but in different reaction (the ammeter goes to end minus and the hmm disappears in manual mod) any explanation for this reaction since the device not able to detect this before increasing the Vp-p.
another question it s possible to make the discrimination with toroiddal coil antenna ??? or we need to use normal wire coils??

[sheekh]

welcome Skippy
yes , this is what I am thinking to take special module and modify it , but that it depends on how much the applicability for the circuit to do the discrimination with out losing depth - I think all type of IB DETECTOR with discrimination can do but we will lose the depth . so as KT suggest to get highest Vp-p this the starting point second point we need to reduce the noise to the minimum to keep every thing under control .
thired choic to have aother transmitter with high power with the same frequency so we will have one frequencies with different amplitude and I don't KNOW WHAT WE WILL GET AT THIS CASE
regards
sheekh

[kt315]

I do test for cash around 200 ml liter of coins in plastic container but I not that the device can see this at 50 cm but in different reaction (the ammeter goes to end minus and the hmm disappears in manual mod) any explanation for this reaction since the device not able to detect this before increasing the Vp-p.
---
because a detector 'sees' one coin from all, not as you wait a reaction on all coins together. Fuko current is acted in every coin
independetly and not unite. american people call the current EDDY CURRENT.
you see the cash test for two box is not working. thats too big delusion of every newbie thinking to use two box for the cash seeking.

[sheekh]

WELCOME KT AND MANY THANKS for your availability all times
EDDY CURRENT FOR ONE COIN make the ammeter goes from 10 to minus - EXCUSE ME I DONT THINK BUT ALL COINS FORM ITS OWN EDDY CURRENT , BUT SUM OF ALL EDDY CURRENT EFFECT IN DIFFERENT REACTION way with different angels (this my opinion) , by the way i test with one coin its not detected - AT THE SAME TIME WITH 300 ML ALUMINIUM COAL CAN DETECTED AT 1 METER may be the direction here one way -
so in both cases the filed disturb between tx and rx for both case
give different direction when its detected
but why this happening I didn't get the answer.




I have anther explanation but i need to make this test with cave mod to see the effect then i will return to you
many thanks kt

[kt315]

i see your full understanding of the physics processes. it seems your knowledge in electronics is ~ zero.
a problem of your country that you do not have tech universities, in my opinion.

try to understand Carl's Cache Test and conclusions https://www.geotech1.com/forums/show...831-Cache-Test

[sheekh]

I am not sure about that , I i finish my university before 40 years my son, all our life we need to learn new things
one word :may county is the best county in the whole word .
cash test i read that there is some facts in this test and may hidden facts not explained .

[kt315]

Carl detectors collection

[kt315]

how old are you if i'm a son? i'm 57 old. do not say me you are 77.

[sheekh]

sorry kt , in our language "my son" we say it for lovely people and near to heart .

[kt315]

let me know your county, native and age. i do not see you feeled your forum profile.

[sheekh]

cash test not related exactly to the type of metal detector you use -
in physics they determine the age for any old material regarding by some tests "Radioactive half-life" this done for metal or organic material
in chemistry with the presence of oxygen and water and time every thing happening there formation of organo metalic compouned the heighest material can conduct electricity becuse of its formation of double bonds between the atoms which form the base of supper conductor material which use in most of our electronics
so h-bonding cross linking active .. MAKE THE CASH AS ONE UNIT with its own filed specially WHEN THE CONS TOUCHING EACH OTHER
with this formation THE cash DETECTION more easy .
so some people name it Hallow and the others phenomena ...etc.