Minelab GP 3000 Gold Nugget Detector
The Minelab GP 3000 detector was released in April 2003 and is no longer in production. I got one the same year and that detector sure did find gold for me! See GP 3000 & MXT Get Fortymile Gold and Minelab GP 3000 at Moore Creek, Alaska plus Moore Creek Permits & Gold at Steve's Mining Journal.
The Minelab series of pulse induction (PI) metal detectors starting with the SD 2000 are widely acknowledged as being the most powerful gold nugget prospecting detectors currently available. The GP 3000 is a variant in the series. See Steve's Guide to Differences of Minelab SD, GP, & GPX for details.
The GP 3000 was an improvement on the earlier SD 2200D and GP Extreme models, both of which I also owned. Minelab set the bar rather low with the introduction of the GP 3000. All that was touted was "NEW Low-Noise circuitry, NEW battery harness, and a NEW "Smart Point" diagnostic port". OK, new harness, nice, but no big deal. A diagnostic port? Nice for the service department but does nothing for my detecting. There is so little difference between the GP Extreme and the GP 3000 that if you download the GP 3000 Instruction Manual below you will see it is just a modified GP Extreme manual. It even refers to the unit as a GP Extreme in a couple places!
One oddity about the Minelab detectors that bears mentioning is that the Minelab coils are only water resistant. They should not be submerged. There are fully waterproof aftermarket coils available along with external speakers for those who do not want to use headphones.
For me the only real improvement was in the stability of the threshold tone, presumably from the low noise circuitry. The earlier Minelabs had a distinct "warble" in the threshold tone. A smooth threshold sound is critical to allow very faint signals from very small of very deep gold nuggets to be easily discerned. The uneven threshold in the earlier models could cause faint signals to be missed. This small but very important improvement was more than enough to make me happy I had upgraded to the GP 3000. The detector paid for itself many times over.
Download the Minelab GP 3000 Instruction Manual Here
|Internet Price||No longer available new - was MSRP $3495 later increased to $3650|
|Technology||Ground Balancing Pulse Induction (GBPI)|
|Autotune Mode(s)||Slow Motion|
|Ground Rejection||Tracking and Fixed|
|Soil Adjust||(Sensitive/Normal/Salt) Three position switch|
|Discrimination||(All Metal/Iron Disc) Two position switch|
|Volume Control||One turn control|
|Threshold Control||One turn control|
|Tone Adjust||One turn control|
|Audio Boost||(Shallow/Normal/Deep) Three position switch|
|Frequency Offset||Automatic Tune push switch|
|Audio Output||1/4" headphone socket (No speaker) Headphones supplied|
|Hip Mount||Shaft Mount Only|
|Standard Search Coil(s)||Extreme 1100 11" round (Double D)
Extreme 1800 18" round (Double D)
|Optional Search Coils||Over 100 accessory coils available|
|Battery||Rechargeable 6VDC 12A/hr sealed lead acid|
|Operating Time||14 - 15 hours|
|Weight||5.3 pounds (w/11" coil, excluding battery)|
|Additional Technology||Multi Period Sensing (MPS)
Dual Voltage Technology (DVT)
Level Adjust - one turn control
Signal Pitch - one turn control
Coil (Double D/Mono/Cancel) - 3 pos. switch
|Notes||The GP 3000 employs an external battery carried on a backpack harness and connected to the control box via a power cord. The detector is normally suspended from the harness with a bungee cord, allowing for nearly weightless operation in level ground.|
*Notes on Technical Specifications - Detailed notes about the specifications listed in this chart.