IDX-PRO+VDI

[Davor]

In communication with seadoggy one thing that puzzled me for some time now has resurfaced: did anyone recently test the original coil, say Blue Max, for resonances of both Tx and Rx, as something is fishy with the values at hand.
The mismatch in frequencies with values often cited here is so great that there is no impedance transformation benefit of the parallel tank in Rx.

[golfnut]

Could we get the schematic for the 2 tone board here please. S

[golfnut]

Ive not been watching the 2 tone developments..

Is one of the benefits you can open the Disc back towards ALL Metal and get the extra depth?
(As well as knowing Fe or non Fe)
S

[reiv]

mahavir, go back to #1245, all files are here in this thread, just read it from begining.

[Schatztaucher]

no problem reiv thanks for the layouts....smt....nice!!

[mahavir]

Hi reiv,
Plz help me friend...
I wants to start this project post here all files...
Thanks..

[reiv]

Sheet You are right, i upload earliers .lay file. But don`t worry there is no errors beasides this missing connection -it`s working, i`m using it. Here is all my variations of this PCB all works.

[Schatztaucher]

Sorry.. I can`t edit previous post, this is correct

hi at all,
just wanted to start with the tt board. but there is an error on the circuit board (reiv's layout). I think i can solder a bridge ....
reiv, look at the layout again. i hope that is the only error.




reiv´s original

[mahavir]

confusion about idx

Hi friends,
I have many confusing about idx-pro-vdi because of I have many files about this so , anyone made this project then post here's all final correct files...
Thanks..

[Ropcsika]

- 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 .


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

I never make concetric coil mate ,what is loop ??where i widing that loop??,and also what is your coil size?

[seadoggy]

Bury a coin and try that. It should do 5" plus. Raise the Sens/gain pot up on the PP channel S

i try that mate!,and also my detector in discrimination mode is not stable!!,in PP mode is ok

[seadoggy]

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

I never make concetric coil mate ,what is loop ??where i widing that loop??,and also what is your coil size?

[Ropcsika]

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

What is best coil for IDX-Pro??i make DD coil! RX wire 0.22 awg 260 turns whit parallel capacitor 33nF and TX wire 0.60 awg whit parallel capacitor 1uF !! But to low detect 1 euro about 18-19 cmm that is to low for IDX-Pro!!

[Ropcsika]

Hi seadoggy

Try it. 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...

What is best coil for IDX-Pro??i make DD coil! RX wire 0.22 awg 260 turns whit parallel capacitor 33nF and TX wire 0.60 awg whit parallel capacitor 1uF !! But to low detect 1 euro about 18-19 cmm that is to low for IDX-Pro!!

[golfnut]

What is best coil for IDX-Pro??i make DD coil! RX wire 0.22 awg 260 turns whit parallel capacitor 33nF and TX wire 0.60 awg whit parallel capacitor 1uF !! But to low detect 1 euro about 18-19 cmm that is to low for IDX-Pro!!

Bury a coin and try that. It should do 5" plus. Raise the Sens/gain pot up on the PP channel S