TESORO GOLDEN SABRE

[Max]

Hi MAX

Thanks for your reply,I retune the GBE trim pot ,when my TGS reject ferrite rod, i found that my detection deepth from 28CM short to 15cm.Very short ,what shoud i do?
I add a 3.3nf cap to RX 15nf cap,very good deepth,but the ground balance is not work. what's the problem?

Hi,
the problem is that good geb setting is difficault to achieve.
If you modify resonance at rx coil you could experience problems cause there's also phase shift you introduce this way.

I suggest you check your frequency then try to reject small ferrite stuff e.g. little rods or toroids but not totally... just it must give some cracks when very near to coil... this is enough to have geb working and save sensitivity.

Require a bit of patience... I know.

On mine I reject almost totally (small cracks) the ferrite things and have really good depth using Ivconic's coil design.

Kind regards,
Max

[tiktak]

Hi

Hi,
Max how are you?

[Max]

Hi,
Max how are you?

Hi tiktak,
I'm fine , thanks, and you ?

[tiktak]

Hi

Hi,
Very well Thank you!
Have you went prospecting lately?
I have more and more finds of coins afther every going out now.
Noting valuable but compared with so far story EXELENT!
Mostly copper/bronze.
And you?
Will keep in tooch.
p.s.i am working on RH now.Hope have same progress there too.Because need more depth.Have you any data about this device?

[Max]

Hi,
Very well Thank you!
Have you went prospecting lately?
I have more and more finds of coins afther every going out now.
Noting valuable but compared with so far story EXELENT!
Mostly copper/bronze.
And you?
Will keep in tooch.
p.s.i am working on RH now.Hope have same progress there too.Because need more depth.Have you any data about this device?

Hi,
no sorry, I haven't... and there are also misleading informations about RH, fake schematics etc around... so be sure it's really it before you mount.

About my prospecting... well... in last weeks I had always bad wheater and so I did not much just a couple of hours I think.

But I will go next week if wheater will be ok.

The depth is a problem also for me... but so far I found solution just using TGS cause it goes deep enough to find something interesting...

You know... I cannot use PIs cause of trash and bad ground response on some sites... cause there's also fired ceramics etc

TGS helps me much in these places.

Kind regards,
Max

[tiktak]

Hi

Hi,
Same with me!

[tiktak]

Hi,

Hi,
Max.
About the depth we can try DD32 or even better DD45 like last editions.But the probleme is that the coils must be calculated very well!
I think that with this deep coils the things will be much better,no metter the benefits.
Can you please calculate such coil.I will wind and test.
Thanks.
p.s.what is your opinion:I think that because my TGS like/prpfere/ copper/bronze ithems/coins/ it might miss somthing?
For this hugh DDs shouldnt we use different wire d for TX and RX for example TX 0,40 RX 0,25?
For RH I have a hunch that this is the real one.Its not my work and I cant post it here but the proper man will do this I am shore.
Did you have data about coil for RH?
Finaly I have found reasonable costing battery charger for 12V lead-acid battery.But its writen on it that its 1400 mA I think and the seller tells me that it should be conected for 12 hours!
I will soon use my 12V batt and see the differance.
For 10XnimH I still use just AC/DC adapther.And its OK!I have around 4 good hours at MAX sens.
What was your e-mail?

[zzy]

puzzle

HI MAX
Today i use a scope test all the point like you test(at page 57),i made every signal same as yours.my Tx frequency is 14.4KHz,but my deepth is very short,GBE is good.
I found that sampling at exact zero-crossing the deep is at max,but the GBE is not work.And when GBE works,it's about 90 degrees to zero-crossing,so the deep short.I wonder how do you get both deep and good GEB?
I'am puzzled!Crazy!
Is the problems in coil?

[Max]

HI MAX
Today i use a scope test all the point like you test(at page 57),i made every signal same as yours.my Tx frequency is 14.4KHz,but my deepth is very short,GBE is good.
I found that sampling at exact zero-crossing the deep is at max,but the GBE is not work.And when GBE works,it's about 90 degrees to zero-crossing,so the deep short.I wonder how do you get both deep and good GEB?
I'am puzzled!Crazy!
Is the problems in coil?

Hi,
yes is possible the problem is at coil. Did you made Ivconic's way ?

100-105 is a good recipe for it... the large DD one.

Kind regards,
Max

[zzy]

Hi,
yes is possible the problem is at coil. Did you made Ivconic's way ?

100-105 is a good recipe for it... the large DD one.

Kind regards,
Max

I have no such big housing,so i can't use Ivconic's coil.
my DD coil,23.5cm form,TX 110 turns,RX 118 turns.wire is0.25mm (0.27mm with varnish).

how do you think my coil?


i had made Ivconic's coil,but i found the resistance is more bigger than Ivconic's.other's is same as Ivconic's. Is my wire not good?

[zzy]

sampling

MAX,are you sampling at zero-crossing?

[Max]

MAX,are you sampling at zero-crossing?

Hi,
yes, at zero crossing. About your coil I think could be good for testing, but if you wanna more depth you must realize something in the 10'' range (25cm or more like the Ivconic's 27.5cm DD we are talking about).

About resistance... I found Ivconic's values about right for my wire and so about the same he wrote. Also I got exactly same frequency at TX when tight the wire on coils using tape etc.

I found just some inductance values a bit different but this maybe depends on the way Ivconic measured inductance there... anyway , inductance is not so important if you already know number of turns required to match frequency and actually match it.

So I think your wire could be smaller than 0.25mm, maybe is less. Could happen sometimes that varnish is thicker than expected and so total diameter is compatible with expected value but real diameter of bare wire is less.

When wire is less in diameter it usually responds more of tightening it... so giving a very sharp loss of frequency when tight. With right wire you get lower freq but just few respect to untightened wire.

I suggest you try the "bayer" method suggested by Ivconic to clean some wire and measure right diameter on it with a micrometer if possible.

You can also use 0.30mm wire if you have but taking care on frequency you get (must be about the same... few hundreds Hz more than 0.25... so say 14.7-15Khz).

Kind regards,
Max

[DIRCEU]

Hi,
yes is possible the problem is at coil. Did you made Ivconic's way ?

100-105 is a good recipe for it... the large DD one.

Kind regards,
Max

Hi MAX!

Do you remember how many turns have in 28DD IVCONIC's coil ???

Regards

DIRCEU

[zzy]

zero crossing?

Hi,
yes, at zero crossing. About your coil I think could be good for testing, but if you wanna more depth you must realize something in the 10'' range (25cm or more like the Ivconic's 27.5cm DD we are talking about).

About resistance... I found Ivconic's values about right for my wire and so about the same he wrote. Also I got exactly same frequency at TX when tight the wire on coils using tape etc.

I found just some inductance values a bit different but this maybe depends on the way Ivconic measured inductance there... anyway , inductance is not so important if you already know number of turns required to match frequency and actually match it.

So I think your wire could be smaller than 0.25mm, maybe is less. Could happen sometimes that varnish is thicker than expected and so total diameter is compatible with expected value but real diameter of bare wire is less.

When wire is less in diameter it usually responds more of tightening it... so giving a very sharp loss of frequency when tight. With right wire you get lower freq but just few respect to untightened wire.

I suggest you try the "bayer" method suggested by Ivconic to clean some wire and measure right diameter on it with a micrometer if possible.

You can also use 0.30mm wire if you have but taking care on frequency you get (must be about the same... few hundreds Hz more than 0.25... so say 14.7-15Khz).

Kind regards,
Max

Hi Max
You must not at zero crossing,because in that the GBE can't work,
just as you had post at page 57,the photo "F7,F8,F9,F10" show that you sample at the wave crest.so you can't get the max deepth.
Today i made some test,i found that in theory we can't get both max deepth and good ground balance.Good ground balance will lost some deepth.
an get more deepth will lost more ground balance.

[Max]

Hi MAX!

Do you remember how many turns have in 28DD IVCONIC's coil ???

Regards

DIRCEU

Hi,
TX=100
RX=105

Kind regards,
Max