Nautilus DMC II schematic request

[kt315]

any info would be greatly appreciated. PCB photos, IC's list etc.

YOURS in this matter, people. Max, please also reply if you are so crazy activated up in last time what you have on a subject.

[dfbowers]

any info would be greatly appreciated. PCB photos, IC's list etc.

YOURS in this matter, people. Max, please also reply if you are so crazy activated up in last time what you have on a subject.

Here U go.. I do not know the source of the schematic or how accurate it is.

Don

[Qiaozhi]

Here U go.. I do not know the source of the schematic or how accurate it is.

Don

I have this one as well.

[kt315]

thank you very much, colleaguis
I did think there is something specific in power suply... because 4 * 9 V batts... but now see they stay in parallel.

best regards

[dfbowers]

thank you very much, colleaguis
I did think there is something specific in power suply... because 4 * 9 V batts... but now see they stay in parallel.

best regards

Yes.. At least the DMCiib can run on only 2 batteries.

[kt315]

wert9 gives photos of the PCB.
http://photo.qip.ru/users/interwert9...346/172025972/

[satdaveuk]

I here these suposed to be very good detectors any of you here own or made one one?
Like the layout, maybe a good fucture project, is it motion type?

[Skippy]

I've never had the opportunity to use a Nautilus. Looking at the circuit, it appears the disc audio is at a much higher pitch than the all-metal audio. Four times the frequency, two octaves higher? Is this correct? Does this help distinguish the two 'information channels' more easily?

[dfbowers]

I've never had the opportunity to use a Nautilus. Looking at the circuit, it appears the disc audio is at a much higher pitch than the all-metal audio. Four times the frequency, two octaves higher? Is this correct? Does this help distinguish the two 'information channels' more easily?

Ground reject Discrimination = 950 HZ,
Non-Motion Discriminate and Non-Motion Ground Balance = 240 HZ

I have not used the DMC11 but probably runs like the DMC11b without tx power boost and coil balance.

The unique feature about these detectors is that the all metal channel will be much louder and sound before the disc channel if it's iron or a low conductor.

The disc channel will sound louder and about the same time as the all metal channel if it's a high conductor like copper.

The two channels have much more information in them when you hear them together.
It's just what you need for relic hunting. Too bad Nautilus has not kept up with technology and come out with a SMT circuit and a lighter box!

Don

[satdaveuk]

Ground reject Discrimination = 950 HZ,
Non-Motion Discriminate and Non-Motion Ground Balance = 240 HZ

I have not used the DMC11 but probably runs like the DMC11b without tx power boost and coil balance.

The unique feature about these detectors is that the all metal channel will be much louder and sound before the disc channel if it's iron or a low conductor.

The disc channel will sound louder and about the same time as the all metal channel if it's a high conductor like copper.

The two channels have much more information in them when you hear them together.
It's just what you need for relic hunting. Too bad Nautilus has not kept up with technology and come out with a SMT circuit and a lighter box!

Don

Hi Don and Skippy
So how did you rate the model you have used, was it good as or better than the TGSL far as depth etc, I only ask because ive here all good and no negative up to now and the circuit looks very do able, spares seem the normal unless ive missed something, if the machine is as good as ive read then its worth graphing a PCB board.

All the best

[dfbowers]

Hi Don and Skippy
So how did you rate the model you have used, was it good as or better than the TGSL far as depth etc, I only ask because ive here all good and no negative up to now and the circuit looks very do able, spares seem the normal unless ive missed something, if the machine is as good as ive read then its worth graphing a PCB board.

All the best

In my opinion, the Nautilus is old technology, heavy, difficult to learn to use, and may be a little over-rated. With that said, it generally doesn't leave much behind for the next guy to find! It's still my first pick if I'm going into a grassy field to hunt for deep relics. Also, I'm sure that I have not mastered all it's capabilities.

As for the TGSL, I get probably 90% the depth of the Nautilus in the ground. But the TGSL I built is super light and I can find more relics faster just because of that. I have a site at the end of the street that is usually just a dirt farm field and I always pick the TGSL. The TGSL does a great job of picking up small brass military buttons, especially with a 9" DD coil. Also, as many already know, the TGSL's best feature is discrimination.

Don

[satdaveuk]

In my opinion, the Nautilus is old technology, heavy, difficult to learn to use, and may be a little over-rated. With that said, it generally doesn't leave much behind for the next guy to find! It's still my first pick if I'm going into a grassy field to hunt for deep relics. Also, I'm sure that I have not mastered all it's capabilities.

As for the TGSL, I get probably 90% the depth of the Nautilus in the ground. But the TGSL I built is super light and I can find more relics faster just because of that. I have a site at the end of the street that is usually just a dirt farm field and I always pick the TGSL. The TGSL does a great job of picking up small brass military buttons, especially with a 9" DD coil. Also, as many already know, the TGSL's best feature is discrimination.

Don

Thats a good fair comment Don its a bit like me comparing my whites 1v which carrys a bad name but for the life of me dont know why to say my quattro which is twice as heavy ive had more good fines with the 1v than with the quattro although its deeper mainly with silver i can cover alot more ground with the iv because its so much lighter, so I understand your meaning
Talking of TGSL next time out thats what im taking, its just last couple of years all my sparetime which is little has been spent on building projects or doing the house up, so making a point of taking a couple of days off next week and see whats to be found.
Regards

[Skippy]

Thanks for the explanation, Don. I've thought about tinkering with one of my machines to add the second audio channel, but now I have seen the Nautilus cct, I have a better idea of what would be needed. Mixed-mode is still a rare feature, I recall that the Rutus Jupiter has it, but there's very little written about that machine yet. Regards.