IDX-PRO+VDI

[reiv]

I didn`t ask You! ,sorry. He has fully right to lost his patience, when most of people is soe lazy don`t want to read 50pages of this thread -better put another post like: "what is the value of threshold, or what about D3, VR3" 101time..

[ashefr10]

I quite agree with you, but not that lazy, there are also novices, and even reading the 50 pages it is always good to ask rather than do anything.

[ashefr10]

I wanted to know why the two 1N4148 diodes, the variable resistor VR3 had disappeared and it was replaced by a thread, and if it was wise to put a 2M2 instead of 1M nothing more

[reiv]

Read post #1248 there is a answer for your question.

[ashefr10]

hello, for stability if you toujour the same problem, read the post 1252 edouardo R25 therefore advised to remove your resistance adjusted and put a 4k7 resistor between terminals 6 and 7 of the LM393 (IC4)

Edurado could you just replay for my question in #1249
After this Yours update:
C23 - 3n9 -> 3n3
R24 - 1M -> 2M2
R25 - depends of U4 (my value about 800Ohm)
D2, D3 - out
VR3 - out, only R43 1k8 -> 2k2
I have worst masking, and my idx is a little unstable- is it normal or I have some sort of problem?

[onuba]

I can put two tones pbc transistor BC549

[ashefr10]

ideal for this porjet would make one motherboard combining the multi-tone and vdi

[onuba]

I can replace the BC547 for c549b n idx pro

[kabier]

hi Dfbowers can you please post the parameters for the 10 inch concentric
thanks

[Ropcsika]

hi Dfbowers can you please post the parameters for the 10 inch concentric
thanks

Hi Kabier.
This is my concentric coil parameters:

- tx winding diameter 240mm ! tx 0.72mm, -29 winding 1,6 ohm, 0,523 mH

- rx winding diameter 120mm! rx 0.2mm,- 370 winding 80,2 ohm, 35,2 mH
Data for the concentric

- feedback loop , diameter 113mm ,10-12 winding 0,6 ohm, 0,019 mH
wire 0.72mm .

[kabier]

hi Ropcsika thank you and so the feedback loop inside the rx winding
thanks

[Ropcsika]

hi Ropcsika thank you and so the feedback loop inside the rx winding
thanks

Yes, inside the rx.

See:

A képet a Képfeltöltés.hu tárolja. http://www.kepfeltoltes.hu

[onuba]

It works perfectly and to the first jajajaj ,2 tones does not work tendre envestigar Or pondre vdi better

Thank you very much eduardo helping and to give me advices

[ricalbertvig]

anyone can tell me what is the actual depth in a ground test ... I have seen air tests, but loses ground VLF detector depth,,, what would be the real ground? .... anyone looking for a treasure in the air .... I'm interested to know what the land .. sorry for my English

[mtd1326]

Welcome. I'm Polish and I'm sorry for my English. I wanted to ask about the VDI
If action VDI is so weak and like a wine program. does anyone knows how to poparwić or write a new one? and I wonder why there is no external quartz with PIC16F88. But I do not know. I only saw other projects and their performance. Vdi works a lot better (range). I myself have captured IDX VDI and a very nice range. VDI Only those ....