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Nautilus
DMC I

The DMC I has two modes:  TR Variable Discriminate and VLF Ground Balance. These two modes can be monitored at the same time.  The advantage of this is that once the VLF ground balance has been adjusted for the area you are hunting, you will find that the more conductive the target, the weaker the sensitivity of that target on the ground balance side. For example, an aluminum pull-tab can be detected deeper than a quarter which is approximately the same size.  When using the TR Discriminator, the very opposite happens...the quarter can be detected deeper than the pull tap.  The Major advantage to listening to both modes at the same time is that now only can you tell whether a target is good or bad, but how good the target is.

Features:
Search modes: Non-motion Discrimination, non-motion Ground balance
Controls:  Discrimination 8 to 1 Vernier Dial, Ground Balance 8 to 1 Vernier Dial, Discrimination Sensitivity, Ground Balance Sensitivity, and Tuning.
Switches: on/off, Dual/Single tone
Audio: Discriminate = 950 HZ, Ground Reject (all metal) - 240 HZ
Operating Frequency:  14 KHZ
Power Output:  Fixed
Search Heads: 8" Standard, Optional: 6", 10" & 15".  Heads are Field interchangeable on same models.
Power Pack: Two (2) 9 volt Transistor Batteries, Optional: Rechargeable Battery System
Physical Configurations: Telescopic Handle in "S" or "U" choice, Grey Enclosure, Padded Headphones.
Weight: 4.3 to 4.5 lbs.

A Word About Nautilus Search coils
Starting from the bottom up,  Nautilus search coils are wound and constructed entirely at the Tyndall Electronic factory in Coats, North Carolina. New construction techniques and materials have made them lighter and more sensitive than ever before in the history of the company. Each search coil is fine tuned to the electronics that it will be shipped with insuring each detector that leaves the factory is optimized. SIzes for the DMC coils are available in 6, 8, 10 and 15 inch diameters. The six-inch diameter model is currently in production for high trash coins and relic hunting locations. Early prototypes tested of the 6 Inch coil were found to be excellent in areas other detectorist walk away from.

All coils have thick mounting lugs and a heavy duty cable strain relief. There are no "whimpy" cable connectors used on the DMC I. All connectors are strictly heavy-duty, nickel plated with a threaded clamp ring. Nautilus search coils and the entire quality parts inventory of Nautilus construction are engineered to keep you in the field longer. Stainless steel hardware is used throughout the DMC I construction.