Testing and comparing

[ivconic]

I put 2 machines on test, on real fiwld, under real conditions. Location is old roman and later byzant fortress...already proven as reach with coins and stuff. So i took Sovereign GT and my CL3 + T.Shadow X3 coil with me and simultaneously work with those, experimenting...changing modes of operation...etc.etc...
Interesting enough is that both machines are very good. I do not need to tell you about GT..it is hell of machine...but.....
CL3 with X3 coil showed even better performances. At the end i found 24 coins with it, while at the same time only 8 coins with GT !!!???
Is it coincidence, luck or something else?
GT is rely good but very "slow". I need so much time to distinguish among weak signals...also must not sweep fast or else signal were lost?
Other side, CL3 is so fast so i can sweep faster and faster....no lost of signal at all.Loud, clear and very sharp!
At the end, i need 3 times less time to walk same field with CL3 and be sure that i finished it than with GT...
So satisfied with it! Main thing is in X3 coil, which showed excell performances in real conditions....
Any opinions?

[Geo]

Hi Ivica .
Can you measure the X3 coil? I believe that is very easy to construct a coil same with X3. So if you have inductance meter i wait>>>>>>>>>
Ohhh 1266...... what about. When i will finish my works (grrr i am very very busy) i will construct it, i am sure that i will do it to work perfect.
Any way my friend
Regards from Greece and Geo

[ivconic]

Not so easy!


Hi Geo!
Well, i am so satisfied with this coil; i would like to have dozen of those!
But it is so hard to get it, also expensive. Best way to make exact copy of it
is to use sanding machine and cut it in small pieces! Open it, count windings,
measure wire gauges...etc.etc..You already understand what i mean.
But, since i do have only one, for now, i dont have courage to do that.
That's why i didnt made already few copies of it...
There is another problem; i busted out again my brand new inductance meter!!!
Again! So, right now it is working but not accurate.Not calibrated well.
So i made few measurements with this one i have and here are results:
TX= approx. 5 ohms; approx. 1,2 mH,
RX= approx. 35 ohms; approx. 6,7 mH.
As you see, i posted draw with dimensions.Elegant coil, isnt it?
One thing that confusing me much is such small diammeter of RX?
I havent seen all possible existing coils on this world, but usually RX is
a bit larger than this one...?! What is the secret??? I would like to know!
RX at this coil is smaller than half of TX?
Yet it is working so good!
In original setup, used with Troy Shadow X3, this coil is extra sensible, very
hard to beat. High depth on coins, maybe one of the best ever.
Also in this setup, i am using now, with CL3, it retained excellent performaces,
maybe 10% worse than with Troy Shadow X3...
Also stabillity is very good. Not good.....best! Usually (with other coils) Classic3
ocassionally "beep"-ing on wet ground, making some false signals, from time to time...
I already get used on this behavior. But now, with this coil, Classic 3 is silent
as a fish! Neither one false signal! No matter wet ground,minerals...nothing!
Stabille and silent...perfect! Depth is also good;
Already found small roman coins(bronze,5mm-10mm) deeper than 20cm in very mineralized
ground! Excellent results! Much better than with Minelab Musketeer i had...
In air, when testing, coins are detected over 27-30cm....
There are many amateurs, making their own hand-mades,usually Classic 3. It became sort
of standard machine to "do it yourself", here in Serbia. All of them also trying to make
proper coil for it.Various coils,sizes,no.of windings, hints,tips...I heard them all
so far....Sort of crazy competition here...Heh!
Also every of them is claiming that his own coil is deepest,best...whatever.
So those people also compete in depth..."fighting" with centimeters on single coin.
I heard stories like: "...40cm on coin...50cm on coin....blah...blah.."
Also, i had chance to test few of those "best" coils so far...Ha,ha,ha,ha!!!
What a joke!? Even 10cm on coin in ground, under real conditions would be success for those
coils...!?
Those are "reacting" for real, when i sweep coin over fixed coil, in the air.Yes, there is
some kind of reaction on over 30-40cm....sort of "detection". But....!
But when tested on ground where coins are burried (test field)..no detection at all!?
Just false signals, so loud and disturbing...it is impossiblle to distunguish between
real detecton and false signal.Totally unuseable! Many reasons for that but in most cases
not properly calculated turns in tX and RX and not nulled well...
Very often used wrong wire gauge...
"Rampage" for greather depth....Without knowing fundamentals about coils.
I think that optimum we can get from 20cm coil is to detect 1cm coin at 20-24cm in the
ground.....(even this is hell of result).
It is just not possible to get more from small coil...OK, in some cases maybe
1-2cm more or less, but that's it!
I have tested so many detectors...havent see anything better than mentioned above.
More depth on coins will need much larger coil. Much larger coil will cause impossiblle
pinpointing and chance to produce false signals from time to time. Also big chance to
disturb discrimination circuitry and make it unaccurate at higher depths...So simple!
Anybody who may have doubts in my claims, may check easily. Just dig 20cm hole, put 1cm
coin in it,bury it and try to detect it. If success, than bury coin at 24-25 cm and try
again to detect it. Even this is not real condition. Real condition is to test detector
and coil outdoor, on some real terrain, undisturbed with previous digging...
Some prejudices should be cleared up, on this subject. I am just trying to contribute with
my amateur experience...
regards!

[ivconic]

...

Draw...

[Geo]

Hi Ivica .
What to say... you found the best coil. As i see Rx is near tessoro or classic coils. But Tx has very low inductance...... do you change capacitors to tune it????
For me 25 cm is the best dimension for a coil...... good depth (for small and medium objects), not heavy and easy to use. I have heard a lot for big depths .... but from my experience on air 30.... 35 cm for a coin 25mm is very good. Anker is very better but has a small problem at stones (reflected signals). In the ground 20...25 cm for the same coin is OK. All these years i hear about new models , new coils , amplifiers with low noise ........ microprossesors....... and......and..... but results are the same. The same Depth....... 20 years now all the same .
Ohhh who is the better..... CL3 or GoldenSabre??????
For me are the same detectors. CL3 has a little better sensitivity and tessoro has better discrimination.
Best Regards

[ivconic]

Correct!


Correct! I absolutelly agree with you Geo!
Regards!

[Unregistered]

What is being CL3 please?

[ivconic]

White's Calssic III

[ivconic]

White's Classic III



Damn keyboard...keep making mistakes...