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Offline Luc
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« Reply #10 on: November 13, 2009, 08:10:06 am »
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Hello all,

I put in Download VLF section on zip file with PCB .lay, schematic and part lists of Relic Hawk.

I do not test it, but it was the last modifications make on it ( see Geotech forum).


Download --->

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Regards

Luc.

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Offline Eugene52Topic starter
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« Reply #11 on: November 13, 2009, 10:27:02 am »
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Hello Luke . I followed the Relic Hawk project very closely on another Forum for several months and there were some problems . If I remember correctly . The first schematic that was posted had some errors , the TX [transmit] oscillator section and the discrimination circuit .  When they tested the prototype it worked only in the all metal mode . As I stated before the Original Relic Hawk PCB was a surface mount , the new copy was through hole . Correct me if I am wrong but I think the circuit board component layout and all the power traces should be changed or completely start over and split the schematic  for 2 separate PCB boards ......Remember "Coinseeker 2"  they are still selling  ? ...I read it does not even come close to the depth and performance of the Relic Hawk . Others are welcome to comment here and Thank-you Luc for posting all the Relic Hawk information . Maybe now with everyones "Expertise" we can finish the Project ?
HH...........Eugene

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Offline Nc-Dirty-digger
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« Reply #12 on: November 15, 2009, 09:19:03 pm »
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i took a shot in the dark and emailed minelab and told them i had a relic hawk and new they would'nt work on it anymore.i wanted to know if they could send me a copy of the schematics and a parts list so i could work on it.well i know i dont have to tell anyone but they replied that they share some of the same things with todays detectors and there for could not give me any info. but hey they could just as easy gave me the info

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« Reply #13 on: December 12, 2009, 03:38:58 am »
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Hi - I'm a new user here. And I posted a short introduction in the forums.

This is not an impossible task (cloning the Relic Hawk - I'm not familiar with this detector). I am, however, quite familiar with surface mount technology.

If people want to finish this project (or any other for that matter) it's just a question of resources. If I could get my hands on a sacrificial machine (to take apart) an accurate schematic is entirely possible (though time consuming). However, they seem to be quite rare and sought after, and a bit pricey. But if there was a group of users on this board that wanted to get something working, perhaps we could all pitch in (become investors) and buy one. I could work off a completely broken machine also. That could go for any of the old favorite machines. I'm short on time until January/Febuary, but I just wanted to toss that out there.
Egads. Being a new user, I guess I have to make a few more posts before I am able to download the relic hawk schematics posted above. I somebody could email me the file I would appreciate it.

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« Reply #14 on: January 08, 2010, 12:19:12 pm »
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up to now I think this is the best web site on the world  thanks,,

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« Reply #15 on: April 27, 2010, 10:36:48 am »
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Try our Russian site MD4u.RU !!! Smiley

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« Reply #16 on: August 14, 2010, 04:26:15 pm »
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Hi - I'm also a new user here and I try to find out how to begin with VLF detectors.  I have experience in design and modification of circuits, drawing,layout and making bcp`s. Measuring equipment is on hand. My target ist to find iron tubes in aprox. 1,5 m depth. Any suggestion?
Regards Erhard
sorry, I forgot that "iron tubes" is a water tube of about 2 inches.

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Offline Eugene52Topic starter
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« Reply #17 on: August 14, 2010, 05:14:46 pm »
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Quote:Posted by ebat
Hi - I'm also a new user here and I try to find out how to begin with VLF detectors.  I have experience in design and modification of circuits, drawing,layout and making bcp`s. Measuring equipment is on hand. My target ist to find iron tubes in aprox. 1,5 m depth. Any suggestion?
Regards Erhard
sorry, I forgot that "iron tubes" is a water tube of about 2 inches.


Hello Erhard . The Relic hawk VLF metal detector might be the project to study !!!  Look on the Forum Download area and the Tech-Talk are to find the files or I can e-mail you some files in a few days .
The Relic Hawk posted on this Forum had 2 problems . 1st was TX oscillator circuit was not correct and the second problem was RX phase relationship with the discrimination circuit . And I think the worst problem may have been caused by the PCB circuit board that was worked on , it was a "through hole" design . The original Relic Hawk Metal Detector was a SMD suface mount designed Metal Detector !!  I think there may have been some signal "suck-out" or signal canceling on the re-done through hole pcb version !!! 

It would be great if you have time to check the Relic Hawk schematic and pcb board that was done in 2008 . It is now discontinued and the Minelab Musketeer took its place running at 5 khz also .

Best Regards...........Eugene

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« Reply #18 on: August 15, 2010, 05:10:05 pm »
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Hello Eugene. O.K. I look for the Relic hawk VLF metal detector. In the Geotech forums I found some files about this detector and I think they discussed the same problem, TX oscillator and discrimination circuit. I am interested in your files and latest statements.
Best Regards
Erhard

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Offline Eugene52Topic starter
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« Reply #19 on: August 15, 2010, 05:18:47 pm »
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Quote:Posted by ebat
Hello Eugene. O.K. I look for the Relic hawk VLF metal detector. In the Geotech forums I found some files about this detector and I think they discussed the same problem, TX oscillator and discrimination circuit. I am interested in your files and latest statements.
Best Regards
Erhard


Glad you are interested in this project also . I will post some more files if they are needed . Another thing to remember is a lot of the Relic Hawk design ideas were carried over to the Musketeer model . If we can find a good Musketeer schematic and study the circuit similarities [look for the unknown transistor numbers ] we might be able to complete the Relic Hawk . We will talk more on this great machine later , When time permits .

Best Regards............Eugene

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« Last Edit: August 15, 2010, 05:21:38 pm by Eugene52 »
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