VLF MD (by Sascho - Varna)

[maikl]

Barracuda is easy to build, detect 1 euro to 30 cm deep in the ground, slightly better than the Surf PI.
What do you expect to find at 30 cm depth? Necklace and earrings will not be able.

[xycy]

Why 'will not be able'? What is hindering it?
What about russian circuit 'PI beta01'? Have somebody built it? It looks nice.

[xycy]

Is anybody made Slow M. detector? What are the results of it?

[xycy]

Can somebody give more details about the TX coil of Slow M? What about 'comp' coil, how to build it?

[maikl]

Is anybody made Slow M. detector? What are the results of it?

For now, no one, only Sasa.
If you had decided to build a, easier for your DD coil. Sasa advice:


DD coil 260 mm diameter-7.2Khz frequency
L1=L2=110turns.
C7=220n
C9=100n|frequency|
C11=1MF
C4=33n
C5=33n|resonanse|


For more details contact Sasho's. You may be given a scheme with better resolution, where they will be visible to all elements...

[xycy]

How can I contact Sasho? Have you his email?

[maikl]

Sasa is presently here in the forum under the nickname scs
http://www.geotech1.com/forums/priva...o=newpm&u=9051

[peterr88]

thanks for your data ,

[zixelll]

Hello my friend, pcb circuit lets you take advantage of thanks to all

[emoxristov]

Does anyone have a picture of the connection of the diodes and transistors

[emoxristov]

Which will you help me with transistors. Thanks in advance

[salih]

the Way connected transistors

[emoxristov]

I weave them BC 177 ion but very hot

[salih]

I weave them BC 177 ion but very hot

Make sure you put the pin Tr 2x 2n2907 in the right place ECB BCE

[scs]

Exchange in oscillator transistor base-minus resistor 68k to 100k.Not transistor problems.