looking for nautilaus info?

[vaquero44]

i'm thinking of down the road trying one, would like opinions on it with the different coils and what kind of depth i could expect and any type characteristics of other machines that it runs like

[Sandman]

I used one of these for awhile and had a rough time learning it because it operates on all metal and disc at the same time and I think it had four modes. It was quite awhile ago that I played with it so I won't comment on how good it was, but it was deep.

http://www.losttreasure.com/content/...utilus-dmc11ba

[vaquero44]

yes i've read that they functioned like that, sounds neet on that type of system but quite a learning curve though but i bet once mastered there no stopping on depth

[U.K. Brian]

Very small learning curve if you just want depth and ferrous discrimination.

Some don't get on with "search loop balance" on the DMC II B. Its not that hard but if its a worry then the Ba will do that for you. Otherwise its just the standard controls of most higher end machines ie G.B., discrimination, threshold and two sensitivity knobs (one for all metal, the other for discrim.). An additional knob that almost no U.S. designs have is "transmit power". This means instead of the seven or eight volts most detectors use you can run less or more (up to 44 volts peak to peak across the transmitter).

There's switches for other options like using a non motion discriminate mode for on salt beaches and you can use auto tune on or off but there's not really much to it. Three types of discrimination. By knob, as with all discriminators, or by using the timing and volume that the signals arrive at your ears from the two audio circuits or even if the target is beyond the discrimination depths of the first two methods the triaxial concentric coils used give a better idea of deep iron than DD design's.

The drawback's are few. Will work on the beach but for rings on the wet I prefer a P.I. and there are extreme mineralisation areas where some other detectors are better, especially if fitted with a DD coil.

I have two DMC's (different coil size on each). They beat most detectors for depth and reliable ferrous I.D. Don't get the old shaft design, sort of double "S", go for the Whites rod option which gives perfect balance.

[vaquero44]

i very seldom go to the ocean, i'm a inland + fresh water hunter field and pastures and old home stead stuff, playing with a cortes at the moment, god i miss my deep tech vista rg 1000!

[George (MN)]

Info I have on my Nautilus DMC-IIB says the coils are not waterproof?! Wonder if there's away to add waterproofing?

Air tests: Using the 6" coil, I get 8" with zincs rejected, 8.5" with tabs rejected, with ground balance set to 65 for average ground. With ground balance set to zero for unmineralized FL beach sand, that increases to 10". With GB set to 100 to mimic the worst dirt on earth only 1" or so disc & 3" all metal.

If I use the 10" coil. it adds another 2 or 3 inches, at GB 65.

Planted coin test: dime down 5"+ & somewhat tilted: solid pretty strong beep. Detector very stable. When noise increased inside house, I had to turn down sens from 9 to 7, but got "depth" back by increasing transmit power. The detector is 4 lb 14 oz including 4 9V batteries. It can work many hours using the heavy duty batteries that may still be available at a few places like Walgreens?

The mixed mode can be all metal in 1 ear & disc in other, or both modes in both ears. Then there's the non-motion disc if low mineralization can be found.
If you don't need a meter, a fun detector. If the weight is a problem, one can always invest another $37.95 for a Swingy Thingy. Best wishes, George (MN)

[U.K. Brian]

There's an approved waterproof Nautilus detector called the U-571

Brian