The Classics and IDX series are a lot of fun to work with. Serious improvements can be made to those machines. Stock, you’d be lucky to detect a coin sized object any deeper than 6-7” in ground. Usually more in the 4-5” range. After a range of “Mr. Bill Mods” the penetration increases dramatically becoming more in line with the (depth) performance of the MXT, maybe better at 12”+ on some coins. With ground balance the sensitivity mods are also very stable. I half expected to encounter a chattery hot mess.
Great stuff as usual Alec! Hope you're keeping fit and well mate!,,,P.S,,still not solved my 2 Crossbows yet,,but I'll persevere!!!!! I'll keep you posted. Take care,Marty.
is nice to see you are doing a vlf project, i may learn something from this. One thing that i’ve noticed, when measure the coil keep it far from metal, inductance can change in presence of it. And regarding the tester from china, that i also have, it has a difference reading (on inductors) when compare it to my LC meter. I have to find a third multimeter to see which one is more accurate. Regards
Thanks for the comment regarding the tester. I had pondered the accuracy of it as well, however as I was able to use the formula to accurately calculate the capacitance value that I needed for the correct frequency I believe that the inductance value must be relatively close. Cheers
Hello my friend. Thank you for watching. Yes you are correct they are part of the TX circuit however they are not necessary to be installed for the TX to work properly as they only are for slight frequency adjustment and in some IDX circuits they are completely removed. Once again, thank you for watching and for your comment.
Great series! Looking forward to the rest of the idx pro build. I have a couple of questions if you don't mind. When you tested your coil for 6.5khz did you use the transmit circuit of the idx or a signal generator? Also the calculators for F, C and L don't give a wire size. How did you know what wire to use to match the impedance of 1.2ohm? My classic sl transmit coil is 2.3ohms I think its the same family. If impedance is off you will suffer amplitude loss or over heat yes?
Hello my friend, As shown in this referenced video I used the TX circuit to prove the frequency of the attached coil. I used 28 AWG wire for this project if I recall correctly, most people use 30 or 32 I believe, I did not note an appreciable difference in the results. The resistance difference +or - will increase or decrease amperage accordingly.
Hello Mostafa, I think that you should subscribe my friend. Here is the IDX Pro: simplemetaldetector.com/pulse-induction-metal-detectors/idx-pi-metal-detector/idx-pro-schematic/
Hello my friend, You are better off building the TGSL. It has very good complete documentation. Here is a link:www.geotech1.com/forums/showthread.php?15710-TGSL-Complete-Details
Hello my friend, most of the answers to your questions are in this video. The coil was a DD, I don't remember the diameter. The KHZ and inductance are what you need.
Good morning,thank you for sharing,this is Mohamed from Alexandria Egypt,at 4.49 top left where it says coil ,point number 5 where it goes and what is connected to it .also .70 +1uf capacitor is it .70 volts or what is the value here and same for the Rx capacitor?, I don't have an inductance device to measure the inductance of the coil wire is there any other method?I may keep asking some questions until I finally make my own clone ,thanks alot for your patience.
You should have an LCR meter in order to check Inductance. You also should have an oscilloscope for building the metal detector project, otherwise you will not be able to check your work and make proper adjustments.
@@SurfDetector ok I understand,I can't afford buying these two now,,what about the oscilloscope diy videos that you can download Android scope master then modify your head set to an oscilloscope?
I've been learning a lot from your channel so thank you so much for your effort, sir! I hope you keep up the good effort
My friend, I am glad to hear that you have enjoyed my videos.
The Classics and IDX series are a lot of fun to work with. Serious improvements can be made to those machines. Stock, you’d be lucky to detect a coin sized object any deeper than 6-7” in ground. Usually more in the 4-5” range. After a range of “Mr. Bill Mods” the penetration increases dramatically becoming more in line with the (depth) performance of the MXT, maybe better at 12”+ on some coins. With ground balance the sensitivity mods are also very stable. I half expected to encounter a chattery hot mess.
That for the comment. Building these circuits in the DIY format is always somewhat of a challenge, but that is part of the enjoyment.
Cheers
Great stuff as usual Alec! Hope you're keeping fit and well mate!,,,P.S,,still not solved my 2 Crossbows yet,,but I'll persevere!!!!! I'll keep you posted. Take care,Marty.
Thanks Marty. I still have yet to box up my Crossbow. I need to take it to the beach at some point this summer.
Cheers
is nice to see you are doing a vlf project, i may learn something from this. One thing that i’ve noticed, when measure the coil keep it far from metal, inductance can change in presence of it. And regarding the tester from china, that i also have, it has a difference reading (on inductors) when compare it to my LC meter. I have to find a third multimeter to see which one is more accurate. Regards
Thanks for the comment regarding the tester. I had pondered the accuracy of it as well, however as I was able to use the formula to accurately calculate the capacitance value that I needed for the correct frequency I believe that the inductance value must be relatively close.
Cheers
Parabéns pelo vídeo, uma observação, R56 (100R), C33 (6,8nF) e P4 (1K) também fazem parte do circuito TX.
Hello my friend. Thank you for watching. Yes you are correct they are part of the TX circuit however they are not necessary to be installed for the TX to work properly as they only are for slight frequency adjustment and in some IDX circuits they are completely removed. Once again, thank you for watching and for your comment.
Great series! Looking forward to the rest of the idx pro build. I have a couple of questions if you don't mind. When you tested your coil for 6.5khz did you use the transmit circuit of the idx or a signal generator? Also the calculators for F, C and L don't give a wire size. How did you know what wire to use to match the impedance of 1.2ohm? My classic sl transmit coil is 2.3ohms I think its the same family. If impedance is off you will suffer amplitude loss or over heat yes?
Hello my friend,
As shown in this referenced video I used the TX circuit to prove the frequency of the attached coil. I used 28 AWG wire for this project if I recall correctly, most people use 30 or 32 I believe, I did not note an appreciable difference in the results. The resistance difference +or - will increase or decrease amperage accordingly.
Yes brother its coming on well legend
Hello Terry,
Thanks for the kind words as always my friend. I hope to see you and Mart on your next live stream.
Cheers
Do You Know about the Turbo Mod what is it about?
Tx ve Rx tek tek turu kaç tur olmalıdır kaç milim tek kullanmak gerek👋
Hello my dear friend, can you help me with what is the thickness of the transmitting and receiving wires, please? How many rolls?
thank you
You are welcome my friend. Thank you for watching.
Am follower ❤️❤️✌️✌️✌️
Please like and subscribe
شكرا جزيلا لك.
you are welcome
The diagram is not visible, can you send it as a PDF file?
Hello Mostafa,
I think that you should subscribe my friend.
Here is the IDX Pro:
simplemetaldetector.com/pulse-induction-metal-detectors/idx-pi-metal-detector/idx-pro-schematic/
Could you tall me, where can I found components of this pcb?
Hello my friend,
You are better off building the TGSL. It has very good complete documentation. Here is a link:www.geotech1.com/forums/showthread.php?15710-TGSL-Complete-Details
IDX pro metal detector coil diameter wire diameter tx rx number of turns and how many kHz should it be bro
Hello my friend, most of the answers to your questions are in this video. The coil was a DD, I don't remember the diameter. The KHZ and inductance are what you need.
Good morning,thank you for sharing,this is Mohamed from Alexandria Egypt,at 4.49 top left where it says coil ,point number 5 where it goes and what is connected to it .also .70 +1uf capacitor is it .70 volts or what is the value here and same for the Rx capacitor?, I don't have an inductance device to measure the inductance of the coil wire is there any other method?I may keep asking some questions until I finally make my own clone ,thanks alot for your patience.
You should have an LCR meter in order to check Inductance. You also should have an oscilloscope for building the metal detector project, otherwise you will not be able to check your work and make proper adjustments.
@@SurfDetector ok I understand,I can't afford buying these two now,,what about the oscilloscope diy videos that you can download Android scope master then modify your head set to an oscilloscope?
D4 is connected between 2 deferent polarities? Is this correct?
What is the value of C1 ,thanks
@@mohalmisri1230 Yes D4 is connected correctly. C1 is 1nF. You should go to the Geotech Forum and read all of the information about the IDX Pro.
can you please send me the link of the coil tester so I can purchase one for myself
Just Google LCR Meter and you will get many choices.
Can lf347 be replaced with lm324,؟؟ thanks
If you compare the data sheets you can see that they are not a good match.
saludos tengo este equipo test en el aire 35cm pero en terreno solido cae demasiado
VLF detectors always are better with the air test than in the earth.
Mantap
Thank you my friend
Hi frind how to make successful coil
There are excellent step by step guides in the Coils section of the Geotech Forum.
Sir plzzz build concentric coil.
Hello my friend. I might do a concentric coil sometime in the future but not now as I am too busy with my work.
Please put the gearber file 🙏 of your PCB Boards to order from China. Thank you 😊 💓
I am sorry my friend. I did not make the pcb with a gerber, I just bought the pcb. I do not have a gerber file for the project.
@@SurfDetector thank you so much 💖
Hi, I searched the internet calculator, but I couldn't find it
Hi, You will need to refresh my memory as to what calculator you are speaking of. This project is one from many months ago.