RELIC HAWK

[Geo]

Oh one more thing; this may help a bit:
i am not sure about original ic's . Surelly not about all in original RH.
But i am sure about some of them; 4024,4053,27M2,TL074,4066,LM339 and LM393.
Which one is where on schematic? I am not sure.No doubts about 4066,4024 and 4053, but op amps....? Not sure. Oh yes; NE5534 is for sure front end! This i am absolute positive!
If this helped...fine, if not....sorry.

Ohhhh very good.
If you have anything else i am here to listen it
Regards

Btw.... TL074 must be the OpAm at oscillator and at the Power suply..... (a,b,c)

[tiktak]

Hi,

TIKTAK , GREAT WORK !!!!!!!!!!!!!!

Hi,
I have used Ivconics pictures of RH and old sprintlayout.


Geo, I think that amtech2005 is right here!The PCB must be the same as original or there will be problemes.I have tryed also to prepare PCB but its too big so far.But I am shore that there will be space when the parts are puted right way.The probleme is that we dont have ICs,resistors,transistors labeled and also we are not shore that even this is original schematic,so I stick to PCB pictures from Ivconic.

What is this big red part A?Voltage regulator?

Thanks

[ivconic]

Hehehe
Hi Ivica. No problem about to build a simplier detector.
But what would you like....... for small objects.... (small coins), for medium or for big objects (treasures)........
I had the same opinion with you but i have not the answer
Regards

I prefer (S)mall objects feature. It is deep enough even for larger objects at grater depths.

[ivconic]

You are not so old so your eyes are OK. My eyes are noy so good so i like the through hole pcb.....
A good pcb will have large dimentions, so i said that i will try to make it a sandwitch with 2 pcbs. I don't afraid...... i believe that i will construct a very good detector. It is time to try it.......

Oh no! I also don't like smt. Through hole is best choice for sure.
Regards!

[tiktak]

Hi,

Hi,
Geo.
I dont now will this help you but just get to here and waned to share.
I see diferances in Ivconics pictures and this schematic.Look 4053 and you will see.
27M2 dual op amp can be replaced.Still some missing.Did you noticed the test points they are on schematic also?

[Geo]

I prefer (S)mall objects feature. It is deep enough even for larger objects at grater depths.

Hi. I prefer (S)mall and (L)arge objects, so i must construct a full version
As i said before long time the problem is not the difficulty of the detector but the Free Time
Regards

[Geo]

Hi TikTak.
Prototype pcb is perfect, but i can't do it. It is SMD technology and i can't work with smd. If i make a pcb with through hole components and exactly as the prototype pcb then it will be very very large. So i believe tht 2 small pcbs 10x10cn or 10x12cm will be ok.
Yesterday I began to draw the schematic to the Protel. First problem is the 2 OA near the LM336 for the power supply. I used a TL074 for a.b.c OA and leave the D unused. I did not check all the components from Ivconic pcb but i believe that we can replace all.
Anyway..... the time will show

[ivconic]

I am not awared of TX transistor? On original RH pcb it is smt without label.
I guess many replacements will do. But, maybe is important to put exact one?

[Geo]

As TikTak wrote a big mistake is around the 4053. I believe that the russian schematic that Eygene post here, is the right. I design the Protel schematic and pcb based on this schematic
Regards

[tiktak]

Hi

Hi,
Geo.
Is it ready?Please post it so we can look for mistakes.
The Russion is right around 4053 but bulgarian look like full schematic.So the truth is somewhere in the midle.
Anyway I have only few components missing on Ivconics coinseeker PCB.So I will test it.And can begin building yours PCB.
Thanks

[tiktak]

Hi,

This are the replacements for BSR51:BC618,2SC4696,BC877,BCX38,C4696

[Max]

Oh one more thing; this may help a bit:
i am not sure about original ic's . Surelly not about all in original RH.
But i am sure about some of them; 4024,4053,27M2,TL074,4066,LM339 and LM393.
Which one is where on schematic? I am not sure.No doubts about 4066,4024 and 4053, but op amps....? Not sure. Oh yes; NE5534 is for sure front end! This i am absolute positive!
If this helped...fine, if not....sorry.

Hi,
the 27M2 is probably at middle integrators : I tested them on BandidoII and got nice results. NE553x is sure at front-end like you explained cause of the lower noise figure that improve SNR, though it's a bit expensive as consumption vs other op. amps.

The TL074 must be somewhere before comparators 339/393.

I'm looking too at it... not that I have much time to spend at now... but I'm interested too in RH.

Kind regards,
Max

[Max]

Hi,
I have used Ivconics pictures of RH and old sprintlayout.


Geo, I think that amtech2005 is right here!The PCB must be the same as original or there will be problemes.I have tryed also to prepare PCB but its too big so far.But I am shore that there will be space when the parts are puted right way.The probleme is that we dont have ICs,resistors,transistors labeled and also we are not shore that even this is original schematic,so I stick to PCB pictures from Ivconic.

What is this big red part A?Voltage regulator?

Thanks

Hi,
Eugene is right about cross-talks problems if not smt... but if you want really the project liftoff we MUST use through hole old way.... cause this is the way many people here can build clones easy and fast and then we could focus on optimizing design and solve mistakes or re-made PCB for SMT strategy later.

If you haven't at least 4-5 members here playing with it I think you'll never get it work with fragments of informations we have ... much more is required.

We need understand it very well and get it up-and-running before try SMT: SMT is nice once you know a schematic is full right and work already.

Once you get it work old way you could focus on SMT to reduce size and noise in the circuit but trying SMT as start will be painful with RH when try to make it work!

Choosing SMT as starting point will probably route to failure in such a complex and incomplete/undocumented project.

Just my thoughts...

Kind regards,
Max

[Max]

Oh one more thing; this may help a bit:
i am not sure about original ic's . Surelly not about all in original RH.
But i am sure about some of them; 4024,4053,27M2,TL074,4066,LM339 and LM393.
Which one is where on schematic? I am not sure.No doubts about 4066,4024 and 4053, but op amps....? Not sure. Oh yes; NE5534 is for sure front end! This i am absolute positive!
If this helped...fine, if not....sorry.

Like this....?


Kind regards,
Max

[Max]

Hi,
I think it's this way...

I avoided putting supply rails cause it's already messy schematic... probably someone would redrawn sooner or later... but pins make sense to me this way.

What do you think ?

Kind regards,
Max