Serbian "Most Wanted"

[ivconic]

The actual depth of this type of detectors in the ground about 15 sm.Is this because working with three signals, hear is one.Ground make invisible problems. Depth in air is not actual. Good variant for beach search. The best variant is with two signals.|Magnum or R-C motion filter|. Sorry for bad Englisch!
My congratulation to Ivconic.

Oh no!
I had founds up to 80cm in soil with SMW so far.
Nice fat silver and bronze coins can detect at 40cm in soil.
Bad bronze coins usually at 10-20cm.
Iron spears and arrows even up to 60cm, depends on size.
SMW is very deep, maybe one of the deepest i saw so far.
Only drawback is not so good and accurate discrimination at deeper irons.
Cheers!

[emoxristov]

Yes it is a nice metal detector but no two tones tests for diskriminatsiya.Ot I made sure that I was strong aparat.Na I love IGSL currently doing and will get the theme images.

[scs]

Comparison of two types of signal motion amplifiers.

[Davor]

Try Tesoro WITHOUT C4
It is responsible for the odd delays and shortening the pulses in response of Tesoro motion amplifiers, and actually has no function that you'll ever miss. Without the C4 it works dead-on, just as it is supposed to.
Magnum has no compression, and I don't like it at all.

[scs]

Magnum heard signals with no delay.Tesoro make three signals. They hear second.This leads to gaps in the ground.

[scs]

Metal indication time diagram.

[Davor]

Very true, but you did not try to extract C4 and see what happens with Tesoro after that

[emoxristov]

Ivconic can you send me a correct version of the board 555. I do it because I see my moshten.Tryabva metal detector for ferrous metals only if you can recommend me another option and I'm grateful.

[Davor]

Achieving Fe discrimination is easy - you just reverse the pins 5 and 6 of a comparator to set discrimination phase for Fe.

[ivconic]

Ivconic can you send me a correct version of the board 555. I do it because I see my moshten.Tryabva metal detector for ferrous metals only if you can recommend me another option and I'm grateful.

Yes.
Here it is:

[emoxristov]

Thanks a lot can you upload the following scheme for BC547 will EBC. Antenna and data.

[ivconic]

Thanks a lot can you upload the following scheme for BC547 will EBC. Antenna and data.

Emoxristov you should read this thread from a start, already is explained well.
BC547,BC327 pin assignment is always CBE.
Coil ("antenna") can be Tx=1mH, Rx=15mH. Tx cap is ~ 470+47nF (parallel).
Also Fisher coil can be used, 2.2-2.4mH for Tx and 9.6-11mH for Rx. Tx cap is ~220nF.

[emoxristov]

Thank simply LAY file you sent me below is seen how they put tranzistorite.Shte temata.Blagodarya read again for the help.

[emoxristov]

Ivconic , Really transistors are located at the bottom of the board.

[ivconic]

Was it a question? Not sure that i understand well!?
BD135 and BD136, ECB pin assignment.