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"What is the BEST gold detector?" A common question. Here you can learn Preface: Gold detectors are all-metal-detectors. They respond to all metals, be it gold, copper, lead, silver, nickel, iron etc. What qualifies them as 'gold' detectors is that gold generally is found in difficult ground-mineralization, so the metal detector must have the proper controls to deal with ground conditions that can be noisy, obscuring the detector's ability to 'see' gold nuggets in the ground. In order to neutralize this ground noise the gold detectors rely on ground balancing circuits, either auto tracking or manual ground balance. The second important factor is the frequency of the circuit. VLF detectors optimize to sense gold nuggets (the average size in California is about match head or 2 to 3 grains). They tend to operate at a higher frequency than your traditional coin metal detector, about 10kHz to 72kHz. Pulse induction detectors, particularly Minelab's super detectors, multi-pulse, sensing under 3 kHz, but have been designed to see fairly small gold nuggets in addition to the larger gold nuggets. Their strongest advantage is in their ability to virtually ignore most hot rocks that will challenge a high end VLF detector and render the ground very quiet.
Top VLF Gold Detectors
Garrett Gold Scorpion, 15 kHz: MSRP $550.00 Comments: Manual Ground Balance. Garrett Gold Scorpion continues the tradition of the Garrett Ground Hog circuit, so popular in the 1980s. Its 15 kHz circuit is quite sensitive on small match head size nuggets. The Gold Scorpion is a smooth operator and comes with a 6x10" wide scan loop, which is pretty much the industry standard. Manual ground balancing is done with a 10-turn ground balance control with a fixed auto tune. The Gold Scorpion has a full range motion discriminator, as well as a non-motion TR discriminator. The Gold Scorpion has a light-weight feel and can be pole- or hip mounted. No VCO. Its dual discrimination circuits also make it an effective coin and relic detector. White's Goldmaster GMT, 48 kHz: MSRP $799.00 Tesoro Lobo SuperTraq, 17.5 kHz: MSRP $799.00 Comments: Auto tracking ground balance with 3-position mineral switch and single speed auto tune, hip or pole mount. 6x10 Wide scan search head. Full range motion discriminator. Tesoro Lobo SuperTraq was the first American detector made with a ground tracking circuit. Although it has slower sampling than White's GMT or Eureka Gold, Tesoro's smooth circuit and 3-position mineral switch can tame the ground very effectively to ensure those deeper nuggets are recovered. The all metal audio response, like on most VLF gold detectors, has VCO audio for improved target recognition. Can be used as a coin and relic detector.
Comments: Auto tracking ground balance about as fast as the GMT by Whites. Two speeds of auto tune. Comes standard with 6x10 loop, no factory accessory loops made due to the complexity of being able to select between three different frequencies; 6 kHz for deepest/largest gold nuggets, 20 kHz (the preferred frequency, with impressive sharp response on match head sized nuggets and larger), and 60 kHz for sub-grain nuggets. Most impressive is the quietness of the circuit that Minelab is so famous for, which translates into less noise to better see and hear that small elusive gold nugget. Although not advertised as having the ability to coin shoot, you can use it for that, as it has a ferrous or iron discriminator. Big Valley recommends to hunt at 6.4 kHz with tracking off. You can also have fun looking for the coveted fine jewelry and chains using 20 or even 60 kHz around the tan bark. Predecessors included the American Gold Striker (first tracking detector at 32 kHz) and Minelab 18000 GT. Other VLF Models Pulse induction detectors & super prospectors.
Garrett Infinium: MSRP $1250.00 Comments: Very similar circuit to the 2200D but has some big advantages. It is water proof to 200 feet or more and is ergonomically much lighter and easily pole or hip mounted. The circuit sounds very close to Minelab's 2200 and it appears that Charles Garrett and the engineering staff likewise took a page or two out of Eric Foster's technology. Several months ago, Mark the Locksmith, a Trans Bay customer, traded in his Detector Pro Head Hunter PI (Eric Foster Circuit) with which he found a man's gold ring holding two 1/4Ct diamonds at over 14" deep. Mark had been doing his homework and asked to borrow an Infinium demo. He decided he liked the high-low conductive tone ID and ordered one. After he received the new Infinium he remarked that this new Infinium seemed to be more stable and, after checking with my National Rep, Carl Mathias, it turned out that Garrett has quietly continued to make improvements in the development of the Infinium with very little fanfare. The Infinium has a great selection of factory mono and double D or wide scan loops at its disposal. Three years ago, the other number 1 in the power of 2 took the Infinium to Lake Tahoe and it cut through the heavy volcanic black sand with ease. There were even coins too deep to dig, at over 20". The infinium is definitely a best buy.
Comments: Back in the early 1990s Jimmy Sierra received one of the very first SD 2000s from Bruce Candy, Minelab's chief engineer. The very first one had been given to Peter Hedyler, a Ex Dutch Marine who was living and prospecting in Australia and used the Fisher Gold Bug and White's Goldmaster II. Within a short time, Peter heard a very deep but large signal in hard pack iron stone and calichi soil. Trash was unlikely. Peter couldn't put a dent in the hard soil with his pick, so he had to go back to town to rent a jack hammer. It took him most of the day to get down more than four feet, where he pulled up a 60 oz. gold nugget. The SD2000's ability to virtually neutralize any ground reactivity that's generally noisy and challenging to most VLF Detectors was the key to Peter hearing that very deep target. It wasn't too long before Bruce Candy sent one to Jimmy Sierra for evaluation. Eventually, Minelab saw the performance of the prototypes and insisted that Bruce Candy go ahead with production. These SD detectors opened up a whole new world of nuggets whose depth was previously beyond the capacity of any of the other detectors on the market at that time.
Comments: Similar to the 2200 V2 but with an improved battery system, digital controls and digital audio output, makes it the quietest of the super detectors. Preceeded by the GP Extreme, GP 3000 and GP 3500. In reports from Australia and on the forums, the guys using the GPX 4000s continue to find deeper gold nuggets in previously heavily hunted areas. FLASH: About two weeks ago, I ran into a detectorist-gold hunter using the new GPX 4000 using an outboard audio booster. The GPX 4000 responded with a clear, definite signal which is music to any prospector's ears. After several minutes of wielding his pick, he recovered a gold nugget about the size of a finger nail at approx. 14". That was impressive. You could say Minelab GPX 4000 is the current leader of gold machines...
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