RELIC HAWK

[Qiaozhi]

Hello

http://web.archive.org/web/20070222222751/www.pulsediscriminator.com/index_files/PD3200DiscEng.htm

is it explaning Max discrimination problem?

Regards
Erol

No ... because the link concerns discrimination in pulse induction detectors with mono coils, whereas the Relic Hawk is a VLF-IB.

[asenkron]

merhaba

acil bilgileri bekliyorum.

[asenkron]

HELLO

U11 CD4053 PİN NO SCHEMATIC NO - PROBLEM baglantıların pin karsılıgı yok semada.
U13 CD4024 1 PİN CLOK f kode -f kode U2 LM393 burdan alınması dogrumudur tx osc den alınması gerekmezmı.
kulaklık cıkışı için 15mh bobın cocu yerde bulunmaz burayı makul sekılde duzenlesek.
pcb basladım acil cevap.turkce bılen ingilizceye tercume etsın .simdıden tesekkurler.

[erolunall]

Hello

http://web.archive.org/web/20070222222751/www.pulsediscriminator.com/index_files/PD3200DiscEng.htm

is it explaning Max discrimination problem?

Regards
Erol

[Ultimate_Haze]

Its have been listed already but here it is:
Relic Hawk Parts List:

Resistors:
2k2 =1
15k =1
470R=1
100R=2
4k7 =4
27k =6
47k =10
6k8 =2
4m7 =1
18k =3
820k =1
330R =4
33k =1
360k =4
10M =5
1M2 =1
2M2 =1
22k =5
1M6 =1
620K =1
100k =11
68k =2
10k =2
91k =1
470k =1
47R =1
CAPACITORS:
220 nf =5
6.8 nf =1
100 nf =32
10 nf =4
470 nf =4
1 nf =6
2.2 nf =2
1 uf =3
ELECTROLYTIC:
4.7 uf 16v =1
470 uf 16v =3
2.2 uf 16v =1
PCB/TRIM-POT:
10k =1
100k =1
POTENTIOMETER:
10k =2
100k =1
DIODES:
1n4148 =7
1n4007 =1
SPECIALTY:
LM336 2.5 volts
TRANSISTORS:
BC557 =2
BC547 =1
BC517 =1
INTEGRATED CIRCUITS / "ICS" :
CD4024 =1
CD4053 =1
CD4066 =3
TS27M2 =3
TS27M4 =1
LM339 =1
LM393 =2
NE5534 =1
Inductors:
15 millihenry =1
1 millihenry =1

Thanks.
Please upload here when ready.

[Max]

Hello

I asked my friend Asenkron to Draw new PCB for RH at http://www.geotech1.com/forums/showt...=14025&page=27

He is ready to draw but some questions.

Shematic is True? İt is simülated on LTspace
Power suply lines İs not Clear
There are a part which both side 2X2600uF Codansatörs , writing power. What is this part? all Op-amp names list and input voltages for Op-Amp. Last question There are some + - and +2.5 -2.5
is this same for all schematic

Asenkron said He needs this information to draw a good PCB
if Someone explane this questions. He will draw a new PCB for Relik Hawk in two day. He is waiting İnformations.

Best Wishes
Erol

Hi,
can't give a sure answer at now... but can say that probably the schematic is 99% accurate; minor stuff could be related e.g. to the identification of some parts like the famous unknown transistor used at oscillator.

When I made it... using Fred's pcb I had to spot little mistakes... and correct them, then circuit worked as expected, the md detected at very nice distance so it's even sensitive as we expected.

Just I had a worse problem with disc: far iron detection... means some pieces of iron were detected at far (more than 25cm) but discriminated (thus give no signal) when near the coil!

But you must consider that I had no real , original RH coil from ML... I made myself... tuned myself... and maybe, probably made some mistake at phase shift between tx and rx coil... cause only problem is at disc of FAR iron. All the rest works by the book, so we said that device was cloned 95%.

Indeed I still don't know why I had that far iron detection (I guess I made bad coil or not good enough, wrong phase on it).

Other problems were already solved.

I cannot resume RH project cause need extra instrumentation and lab up and running and I haven't at now... that sure will require much time months probably, so would be nice if you guys will make a new pcb and will have success with it before that.

Kind regards,
Max

[erolunall]

Hello Fred

if you can write Op-amp (IC) names and Voltages on IC beetwen +- when Dedektor Working Will be helpfull.

Best Wishes
Erol

[Fred]

Hi Erol,

I don´t understand all your questions, bu i will answer what i can:
-Max version of schematic is the most accurate,it works but with some minor problems, maybe due to the bad PCB layout.
-it is not 2600uF it is 26 pieces of 100nF capacitors, for decoupling below u1 to u13.It is not a part, just to show decoupling must be done below each IC, with 2 caps (13ic´s X 2caps=26).
- yes +/- 2v5 is common for the whole circuit.

I think has been partly simulated on ltspice.
Regards,
Fred.

[erolunall]

Hello

I asked my friend Asenkron to Draw new PCB for RH at http://www.geotech1.com/forums/showt...=14025&page=27

He is ready to draw but some questions.

Shematic is True? İt is simülated on LTspace
Power suply lines İs not Clear
There are a part which both side 2X2600uF Codansatörs , writing power. What is this part? all Op-amp names list and input voltages for Op-Amp. Last question There are some + - and +2.5 -2.5
is this same for all schematic

Asenkron said He needs this information to draw a good PCB
if Someone explane this questions. He will draw a new PCB for Relik Hawk in two day. He is waiting İnformations.

Best Wishes
Erol

[Max]

Recently i got Minelab Musketeer Colt with 18cm TS800 DD coil.
I had same model few years ago. This time i had unbeleivelable luck; guy from USA advertised it on ebay as brand new, never used. Actually never unpacked from original package!!! Device stayed in shop window as exhibit all those years , unpacked !!! So guy recently decided to move shop and therefore was pushed to sell all the exhibits from there. Can you imagine my thrill! Colt...old model.."cult" model in original shape, brand new, never used, shiny and polished!!! Wow!
A good friend from Slovenia bought it for me and it took almost 3 months, with much help from another good friend to import it here to my place.
Finally all the anticipation repayed. It is here.
I dont have word to explain joy working again with it on the field. Yes...we have now Advantage - exactly the same machine with some presets more on front panel...but, Colt is Colt. With that retro look and that retro feeling...nothing can substitute it ever!
Also i have 36cm,39cm and 45cm Excelerator coils for it.
Spring ... time for prospecting, so i am planning to spend whole season with it outdoor. Later...maybe in October i am planning to open it and finally redraw whole schematic. Also to decipher all the doubts here about it. That will give us (once for all) most proper and most accurate schematic for this subject (same thing as Relic Hawk, just without SML modes)....
Until than...

Hi,
read it just now! Wow, that's exciting info!
Congratulations!

I have also in mind of clear all dubts about it... but still too many issues here to take a serious plan on RH board and circuit!

I think will be a nice thread in next autumn/winter.... till then... hope you'll find alot with that thing... Have a nice hunt season !

Kind regards,
Max

[Ultimate_Haze]

Porkluvr,
Is Tektronix 2232 100 MHz DIGITAL STORAGE OSCILLOSCOPE good enough?
I will have it in a fiew days.So everything will be diferent.
Also get two brand new probes.
Now that its old but it were greate deal,so I will have to live with this.

[Ultimate_Haze]

Congratulations,
That's realy good news.
I havent chance to test XS or Colt but seen RH in action and its real trill.
Personaly I doubt that even latest MLs will go deeper on such hard soil.
About the audio all true.Man have to see for himself.Hard to explain but great target indication with some sort of bang when good.Can be frustraited buy some large irons bot most detectors cant even see such deep targets.
Wish you luck on your happy vacation in forests.

[ivconic]

What really makes this machine very special (Colt,XS and Advantage) is its audio - audio response. On skim look audio is very poor, single freq. and very simple. Ha,ha,ha...; this is only on skim look. After spending some time with it, operator will realize fantastic audio which carrys much informations about target. That is what i always wanted to gain with my favourite project - TGSL.
One more thing; coil sizes. I tested all mentioned coils with it. Larger coils do cover larger areas on soil and of course do go a bit deeper. But smallest 18cm TS800 coil is just fantastic to suit most of prospecting demands. It is going very deep also. It is real challenge to make such small coil and maintain good performances and excellent depths.
How they done it?
Also this will put more light on one, also very interesting question; depths and coil size relations at IB's...

[nakky]

Ivconic,I can't wait. Grt Nakky.

[ivconic]

Recently i got Minelab Musketeer Colt with 18cm TS800 DD coil.
I had same model few years ago. This time i had unbeleivelable luck; guy from USA advertised it on ebay as brand new, never used. Actually never unpacked from original package!!! Device stayed in shop window as exhibit all those years , unpacked !!! So guy recently decided to move shop and therefore was pushed to sell all the exhibits from there. Can you imagine my thrill! Colt...old model.."cult" model in original shape, brand new, never used, shiny and polished!!! Wow!
A good friend from Slovenia bought it for me and it took almost 3 months, with much help from another good friend to import it here to my place.
Finally all the anticipation repayed. It is here.
I dont have word to explain joy working again with it on the field. Yes...we have now Advantage - exactly the same machine with some presets more on front panel...but, Colt is Colt. With that retro look and that retro feeling...nothing can substitute it ever!
Also i have 36cm,39cm and 45cm Excelerator coils for it.
Spring ... time for prospecting, so i am planning to spend whole season with it outdoor. Later...maybe in October i am planning to open it and finally redraw whole schematic. Also to decipher all the doubts here about it. That will give us (once for all) most proper and most accurate schematic for this subject (same thing as Relic Hawk, just without SML modes)....
Until than...