Steve Herschbach

The Garrett Ace 300 metal detector was introduced in 2016 and is still in production. The Ace 300 is a 8 kHz VLF metal detector aimed primarily at coin, jewelry, and relic detecting. "Garrett has placed big features into the ACE 300 - Digital Target ID, better detection abilities, a new audio system, and more - for a price that can’t be beat." Source: Garrett website Garrett Ace 300 metal detector Garrett Ace 300 control panel Digital Target ID: 0 to 99 scale offers target information 7" x 10" PROformance™ submersible searchcoil offers more coverage, depth Higher frequency (8 kHz) provides better sensitivity on low and medium-conductivity targets (i.e. gold, lead) Increased Iron Resolution: twice the iron resolution of an ACE 250, to help overcome target masking in iron-laden hunt sites Adjustable Frequency to help eliminate interference Camlocks for increased stem stability Includes Pulse-Width Modulation audio: sharper, more responsive audio Includes Electronic Pinpointing: precisely locates targets and speeds recovery Notch Discrimination: Modify discrimination patterns based on what you are seeking. Five Search Modes (plus Pinpoint) Eight (8) Sensitivity/Depth adjustments Coin Depth Indicator determines target depth Expanded Target ID legend: includes indication of U.S. coin denominations Official Garrett Ace 300 Product Page Garrett Ace 300 Owner's Manual Garrett Metal Detector Forum

The Garrett Ace 250 metal detector was introduced in 2006 and was discontinued in 2019. The Ace 250 is a 6.5 kHz VLF metal detector aimed primarily at coin, jewelry, and relic detecting. "Garrett has placed big features into the ACE 250—excellent detection depth, rugged design and ease of operation—for a price that can't be beat." Source: Garrett website Garrett Ace 250 metal detector Garrett Ace 250 control panel Electronic Pinpointing: to precisely locate target and speed recovery Accept/Reject Discrimination: to modify discrimination patterns Five Search Modes: select pre-set discrimination pattern or create your own Continuous Coin Depth Indicator: to determine target depth Battery Condition Indicator: shows battery life continually Interchangeable ACE series searchcoils: are available Expanded Target ID Legend: easy-to-read above large LCD screen Pushbutton Controls: with One-Touch operation Other features: 3-piece travel/storage, disassembles to 24"; adjustable arm cuff; quarter-inch (1/4") size headphone jack. Garrett Ace 250 Owner's Manual Garrett Metal Detector Forum

The Garrett Ace 200 metal detector was introduced in 2016 and is still in production. The Ace 200 is a 6.5 kHz VLF metal detector aimed primarily at coin, jewelry, and relic detecting. "Lightweight and Easy to Learn. Powerful, entry-level detector with One-Touch operation. Turn on and begin finding treasure!" Source: Garrett 2018 catalog Garrett Ace 200 metal detector Garrett Ace 200 control panel Digital Target ID - Numeric scale from 0 to 99; indicates a target’s conductivity for increased ability to distinguish targets from each other. Pulse Width Modulation Audio - Provides sharp, responsive target signals. Three Search Modes Coin Depth Indicator helps determines target depth. Camlocks for increased stem stability Four Sensitivity adjustments Low Battery Indicator Disassembles into three pieces for storage/travel. 6.5” x 9” PROformance searchcoil included Official Garrett Ace 200 Product Page Garrett Ace 200 Owner's Manual Garrett Metal Detector Forum

The Tesoro Lobo SuperTRAQ metal detector was introduced in 1997 and ceased production in 2018. It is a weatherproof 17.8 kHz VLF metal detector aimed primarily at gold prospecting with coin, jewelry, and relic detecting being secondary uses. "The Lobo Super TRAQ is an incredibly versatile, feature-rich machine that triumphs in small gold nugget prospecting. Spoil yourself with a detector that self-adjusts to any type of soil, even in highly mineralized locations. While the Lobo is designed to find gold, it also thrives in detecting coins, relics, and other treasures." Source: Tesoro 2013 catalog Tesoro Lobo SuperTRAQ metal detector Tesoro Lobo SuperTRAQ control panel SuperTRAQ Computerized Ground Tracking System VLF 17.8 kHz Frequency All Metal Auto Tune Mode Adjustable Threshold Silent Search Discriminate Mode Instant All Metal No-Motion Pinpointing Ultra-Smooth Operation in Extreme Mineralization MAXBoost Sensitivity Three Ground Tracking Modes: Normal Soil, Alkali, Black Sand Pole or Body Mount Lightweight Design 10" Elliptical Widescan Coil Limited Lifetime Warranty Official Tesoro Lobo SuperTRAQ Product Page Tesoro Lobo SuperTRAQ Owner's Manual Tesoro Lobo SuperTRAQ - Steve's Review Tesoro Metal Detector Forum

The White's TM 808 metal detector was introduced in 1996 and was still in production when White’s closed up shop in 2020. The TM 808 is a "two-box" metal detector that is designed for finding large objects at depth. Two box detectors are not sensitive to items much smaller than a baseball, but can detect large items like a 55 gallon drum or water main to depths exceeding ten feet. Two box detectors are a favorite of the classic "treasure hunter" but are more often used by utility companies and surveyors. The TM 808 originally included a "Cave Mode" intended to find large underground cavities. This "Cave Mode" was removed about 2010. "TM 808 is designed for locating coin caches, treasure chests and hordes of gold or silver - as well as septic tanks, tools, equipment, metal pipes and relics." Source: White's 2018 catalog White's TM 808 metal detector White's TM 808 control panel SIGNAL BALANCE CONTROL Adjusts the “Receive” signal to allow use almost anywhere- regardless of mineralization or outside interference EASY-TO-READ METER Shows signal strength RACE TRACK ANTENNA SYSTEM and state-of-the-art professional circuitry ADJUSTABLE GROUND BALANCE The only cache detector with the ability to reject ground minerals for deeper detection PUSH-BUTTON RETUNING DROP-IN C-CELL BATTERY PACK EASY TUNING & SETUP Preset settings on each control for hassle-free setup DESIGNED TO FIND septic tanks, tools and metal pipes as well as coin caches, treasure chests and hordes of gold or silver CONTROL SETTINGS labeled in English and Spanish INSTRUCTION MANUAL in English and Spanish Official White's TM 808 Product Page White's TM 808 Owner's Manual (1996 w/Cave Mode) White's TM 808 Owner's Manual (Revised 2010 w/o Cave Mode) White's Metal Detector Forum

The White's Surfmaster PI Dual Field metal detector is the latest of the Surf PI series introduced in the mid-1990's. The Surf PI Dual was released in 2008 and was still in production when White’s closed up shop in 2020. The Surfmaster PI Dual Field is a fully submersible pulse induction (PI) metal detector aimed primarily at beach and underwater detecting. The Surf PI is submersible to 100 feet and therefore suitable for SCUBA diving. Note however that the coil and headphones are hardwired for extra waterproof integrity and are not interchangeable. "Designed for difficult beach grounds, the Surfmaster Dual Field combines turn-on-and-go ease with the extreme depth and sensitivity of pulse induction detection. PI technology yields extreme depth detection for coins and jewelry – especially in salt water and mineralized ground. This detector is surf-ready and completely waterproof to a depth of 100 feet. Its 12” dual-field search coil has near neutral buoyancy, so it won’t push away from the water or try to sink. Included Piezo headphones are also waterproof. The Surfmaster Dual Field is sensitive to gold, even at maximum depth, and makes hunting easier with gain control and variable sweep speed. The adjustable pulse delay reduces noise from black sand and junk, making targets easier to pick out." Source: White's website White's Surfmaster PI Dual Field metal detector White's Surfmaster PI Dual Field control panel PULSE INDUCTION DETECTION for extreme depth on coins and jewelry, especially in saltwater and mineralized ground COMPLETELY WATERPROOF to depth of 100 feet ADJUSTABLE PULSE DELAY reduces black sand noise. Quieter on the beach, more targets 12” DUAL FIELD spider search coil. Near-neutral buoyancy SENSITIVE TO GOLD even at maximum depths GAIN CONTROL ADJUSTS for your particular beach conditions so you get every inch of PI depth QUICK TARGET RECOVERY TUNER ADJUSTS THRESHOLD tone and checks battery VARIABLE SWEEP SPEED slow to fast with no loss of depth WATERPROOF PIEZO HEADPHONES AUTOMATIC GROUND REJECTION POWER: 8 “AA” batteries included TWO-YEAR Parts and Labor Warranty Official White's Surfmaster PI Dual Field Product Page White's Surfmaster PI Dual Field Owner's Manual White's Metal Detector Forum

The White's TDI SL metal detector was introduced in 2011 and was still in production when White’s closed up shop in 2020. It is a pulse induction (PI) metal detector aimed primarily at relics, gold prospecting, and beach detecting. "The TDI SL provide serious detectorists with affordable pulse power. Initially developed to meet the demands of gold prospectors searching for extremely small and deep nuggets, the TDI has evolved into a detector that has proven itself as an effective detector for relic hunting, beach hunting and, under the right conditions, even coin hunting. Many of the surface relics and nuggets have been found out there, leaving a layer of even more valuable treasures that other detectors couldn’t reach. That’s where the TDI’s pulse technology comes in. This is one deep-seeking unit - especially in the harsh grounds - where other detectors just can’t compete." Source: White's 2018 catalog White's TDI SL metal detector White's TDI SL control panel FULL-CONTROL GROUND BALANCE - Quickly balance out the iron mineralization of hot rocks, black sand and other tough grounds ADJUSTABLE PULSE DELAY - Settings from 10 microseconds (best for finding gold nuggets) to 25 microseconds (for relic, coin and beach hunting) VARIABLE AUDIO - Select with Ground Balance “ON”. 3-WAY TARGET CONDUCTIVITY SELECTOR - Allows variable audio to hear either only low conductive targets like most gold nuggets, or high-conductive targets like silver coins and large relics, or both. Unique ability to aid in identifying trash THRESHOLD CONTROL - Accurately adjust the audio to hear the smaller, deeper signals FREQUENCY CONTROL - Adjustable for hunting near power lines, microwave or other interference GAIN CONTROL - Maximizes sensitivity and depth BATTERY L.E.D. INDICATOR LIGHT NIMH RECHARGEABLE BATTERY PACK - Up to 6 hours of hunting. Backup “AA” pack included. WATERPROOF 12” SPIDER search coil TWO-YEAR Parts and Labor Warranty Official White's TDI SL Product Page White's TDI SL Owner's Manual White's Pulsescan TDI - Steve's Review White's Metal Detector Forum

The White's Goldmaster 24K metal detector was introduced in 2018 and was still in production when White’s closed up shop in 2020. It is a 48 kHz induction balance metal detector aimed primarily at gold prospecting. A waterproof version called the GMX Sport was released in 2020. Garrett Metal Detectors purchased White's Electronics, and the 24K bears the distinction of being the only model that Garrett continued to produce, as the Garrett Goldmaster 24K. All accessories like coils are compatible on both versions. "Featuring a 50% increase in coil voltage over previous models along with an all-new XGB ground balance system, take your prospecting to new depths with the Goldmaster 24k. This machine represents a new generation of VLF detection technology, with features that both sourdough and greenhorn prospectors can appreciate. Starting with the industry-standard 48 kHz operating frequency, we’ve packed all the necessities into one package to put you on the gold. A large, backlit display shows you all the machine’s settings as well as valuable target information. The Target Graph at the top of the display shows Ferrous, Gold, and High Conductor ranges, which is mirrored with Target ID numbers ranging from 0-99. An all-new XGB ground balance system can handle mineralized ground unlike other VLF prospecting machines." Source: Goldmaster 24K brochure White's Goldmaster 24K metal detector White's Goldmaster 24K control panel For advanced users, TracLock and Ground Grab are just a tap of button away. You can assign a ground balance offset in both TracLock or XGB modes. To help prospectors that prefer drywashing, sluicing, or panning, the Goldmaster 24k features a Ground Scan mode that can show you where valuable paystreaks are in streambeds and washes. The Goldmaster 24K offers 10 levels of adjustable sensitivity, adjustable audio volume with two levels of Boost, adjustable discrimination, vSAT, adjustable threshold, non-motion pinpoint, and a Tone ID mode. But don’t let that scare you if this is your first prospecting machine – this is a turn-on-and-go machine, with advanced features you can grow into as you gain experience. SENSITIVITY – Set the sensitivity at a level that does not result in false signals from the ground. Very strong ground may result in the symbol on screen and a loud sound – this means the sensitivity is too high. GROUND BALANCE – With the default setting, the detector will use XGB to automatically ground balance. Tap to lock the ground balance to the current setting. Tapping when the ground balance is locked will update the current ground setting to what is under the coil. GROUND SCAN – Hold to put the detector into Ground Scan mode. The top bar displays the ground strength and the two digit numbers display the ground type (phase). Useful for tracing paystreaks. IRON CANCEL – Tap to silence hot rocks, trash and mineral changes in both audio modes. Hold to select the Iron Cancel setting (1 bar is default). Note that this setting may decrease the detector’s sensitivity to very small gold, but is necessary in difficult ground conditions. VOLUME and THRESHOLD – Tap to adjust the volume with the up and down buttons. Hold to adjust the threshold with the up and down buttons (“th” displays on screen). Set these to a comfortable level for your hearing and preference. AUDIO MODE – With the displayed on screen, the detector is in “BEEP” audio mode (high tone = good target, low tone = bad target). The default setting (without on screen) is a traditional All-Metal audio mode with greater sensitivity to small targets. SAT – SAT can smooth out ground inconsistencies. Hold to adjust it (“Sa” displays on screen, 2 is the default setting). PINPOINT – Hold for non-motion pinpoint mode. In difficult ground this mode may be affected by mineralization. BACKLIGHT – Tap to enable the backlight (this reduces battery life). FREQUENCY SHIFT – Hold when turning the detector on to shift frequency (useful when there is EMI). Power off to save the selection. FACTORY RESET – Hold when turning the detector on to perform a factory reset. AUDIO - Built in speaker, 1/4” headphone jack BATTERIES - 8 AA WEIGHT - 3.5 lbs COILS - 6" x 10" DD standard. Optional 6” round concentric and 4" x 6" DD coils available White's Goldmaster 24K Quick Start Guide White's Goldmaster 24K Owner's Manual White's Goldmaster 24K Color Flyer White's Goldmaster 24K Advanced Ground Tracking Explained Detailed Review Of White's New Goldmaster 24K White's Goldmaster 24K & GMT Compared Forum threads tagged "whites 24k gmx" White’s Metal Detector Forum White's Goldmaster 24K Technical Specifications* Internet Price $729 Technology Induction Balance (IB) Frequency 48 kHz Autotune Mode(s) Variable Self Adjusting Threshold (V/SAT) Ground Rejection Tracking & Fixed w/Grab function, Ground Balance Offset Soil Adjust No Discrimination Visual & Audio Ferrous ID Volume Control Yes Threshold Control Yes Tone Adjust No Audio Boost Yes Frequency Offset Yes Pinpoint Mode Yes Audio Output 1/4" headphone socket & speaker (Headphones Included) Hip Mount Shaft Mount Only Standard Coil(s) 6" x 10" DD Coil standard Optional Search Coils 6" round concentric coil Battery Rechargeable NiMH plus Eight AA Pack Included Operating Time 20 - 40 hours Weight 3.5 pounds Additional Technology XGB Ground Tracking Technology, Ground Scan mode for tracing black sand deposits, Meter backlight Notes IP54 Rain & Dust Resistant *Notes on Technical Specifications - Detailed notes about the specifications listed in this chart. Not only does the new White's Goldmaster 24K features a new ground tracking system, but the gain has been boosted with an increase of voltage to the coil. From the Advanced Guide (link below): "When our engineers set out to build the GM24k, the goal was simple: improve the user’s chance to find gold without hurting their wallets. The obvious way to achieve this goal is increased sensitivity. The GM24k features a 54% increase in coil voltage over the GMT. You will see this in increased sensitivity to small nuggets. While testing this machine in Brazil, this was shown in a tiny, 0.4 grain crystalline nugget we found encased in quartz. In some cases this much power can be counter-productive if the ground is very challenging, so use it with caution! Even at lower gain settings the GM24k is an extremely “hot” machine on small gold and specimen nuggets." The new White's Goldmaster 24K comes with both rechargeable batteries and a holder for AA batteries. The GMK comes standard with the 6" x 10" DD search coil. Currently the is one accessory coil available, a 6" round concentric coil. Both a 14" x 8" DD and 6" x 4" DD coil are possible in the future but have yet to be offered for sale as of March 2019. White's Goldmaster 24K display and controls Here is a video released August 8, 2018 that goes over the basic features and operation of the Goldmaster 24K... From this thread: GOLDMASTER 24K WHITE'S PAPER XGB - A New Way To Ground Balance The biggest challenge we face as electronic prospectors is highly mineralized ground. Simply increasing the gain on the current VLF platforms might help prospectors in very mild ground conditions, but what about more difficult areas with concentrations of black sand, maghemite, serpentine, or alkali salts? On a trip to Brazil we witnessed a combination of these conditions, with soil that ranged from red to black to purple, and exhibited a combination of ferrous and alkali properties within a 4 ft square section. We saw first-hand VLFs from each manufacturer fail to balance out the combination of minerals. Even the top-of-the-line pulse induction machines struggled in this area - machines which cost the garimpeiros (the local term for gold miners) several years’ wages. Our goal was simple: a nice even threshold in challenging ground conditions without giving up sensitivity. The theory is that the main battle most electronic prospectors fight is being able to discern a potential gold signal from ground noise. A smooth threshold would allow users to use more gain and increase their odds of finding small gold where it likes to hide - in mineralized ground. The issue with other VLF detectors on the market is that they were tracking a single ground balance point. When the ground type changes quickly, the machine gives off a false signal. For a user the result is ear fatigue, frustration, and less positive signals dug. One easy way to mask variable ground is implementing an auto-gain feature that automatically numbs the detector. This does not solve the issue, only hides it. The Goldmaster 24k’s XGB is a new automatic ground tracking system that works by tracking multiple ground points simultaneously and quickly. Where other VLF’s track one ground balance point, the Goldmaster 24k tracks several, and can determine an optimal “ground window” based on ground history and strength. This is very useful in rapidly changing ground conditions, where other VLF machines may struggle to track the mineralization changes. Combine this with the speed at which the Goldmaster 24k is able to grab ground samples, and you have a superior ground balance system for a prospector’s VLF. XGB Ground Balance versus legacy methods With any automatic process, there are some concessions. Take vehicles for example - manual gearboxes are still preferred by car enthusiasts. That’s why we felt strongly about including a TracLock® ground option. When used with the Ground Grab, a locked ground balance setting allows users to set the ground balance in an area and lock it until they need to re-ground balance. For users after the tiniest bits of gold, this option allows for the maximum sensitivity to small signals. One technique we observed from field testers was allowing the XGB to automatically track, and then after getting a solid hit or finding a patch, locking the ground balance for target location and retrieval. For many users this combination will be the best of both worlds - the strength of XGB, but only when you need or want it. The net result of an overhauled automatic ground balance system is a VLF gold nugget detector that can be used in wider variety of ground conditions with a nice stable threshold. Operating a machine with a smooth threshold allows for a user’s ears to tune into those slight variations that just might be the next nugget. Our goal is that our customers are able to have success with the Goldmaster 24k in areas that other VLF’s struggle, and at a price that allows more people to get a taste of electronic prospecting. Tom Boykin White's Project Manager Gold nuggets found with new White's Goldmaster 24K - smallest under 1/10th grain

The White's Goldmaster GMT metal detector was introduced in 2000 and was still in production when White’s closed up shop in 2020. It is a 48 khz induction balance metal detector aimed primarily at gold prospecting. "THE GMT IS WHITE’S GOLDMASTER® - used in goldfields around the world! This detector ignores the harsh ground found in gold-bearing areas to simplify prospecting and find nuggets large and small - and coins, too. The GMT® is made for gold country, with 48 KHz operating frequency - the best for gold - and a waterproof search coil that’s ready for streams and rivers. High-end features like the iron target analyzer make hunting easier. Manual controls are available for advanced users and each option includes a recommended initial setting. Also onboard: variable self-adjusting threshold, Grab Pushpad for setting ground balance instantly, automatic ground balance and “Follow the Paystreak” feature, which displays the amount of magnetic minerals in the ground." Source: 2018 White's catalog White's Goldmaster GMT metal detector White's Goldmaster GMT control panel AUTO GROUND BALANCE with Fast AutoTrac® TRACKS AND ADJUSTS while you hunt GRAB PUSHPAD GROUND BALANCE sets in an instant IRON ID Bar Graph PROBABILITY OF IRON displays in percentage IRON TARGET ANALYZER determines the probability of iron as you sweep “FOLLOW-THE-PAYSTREAK” displays the amount of magnetic minerals in the ground OPTIONAL AUDIO Iron ID “Grunt” comes at the end of the GMT’s “zip-zip” sound VARIABLE SELF-ADJUSTING THRESHOLD (VSAT) WATERPROOF ELLIPTICAL “DD” search coil 48 KHZ operating frequency - Best for gold! EIGHT “AA” Drop-in Battery System 40 HRS. OF HUNTING (Optional Nicad Rechargeable System, sold separately) TWO-YEAR Parts and Labor Warranty Official White's Goldmaster 24K Product Page White's Goldmaster GMT Owner's Manual White's Goldmaster GMT - Steve's Review White's Metal Detector Forum

The White's MX7 metal detector was introduced in 2017 and was still in production when White’s closed up shop in 2020. The MX7 is a 13.9 kHz VLF metal detector aimed primarily at coin, jewelry, relic, and gold nugget detecting. "THE RIGHT DETECTOR, AT THE RIGHT PRICE! All the features and sensitivity of the MX Sport - in a detector built for land and shallow water hunting. Just like Sport users have discovered, MX7 will give you a new opportunity to hunt those spots you’ve been before and uncover a new layer of depth. Super-sensitive to small gold targets, too. Plus, the MX7 is so light and balanced at just 3.5 lbs, you’ll be able to hunt all day,and find more." Source: White's 2018 catalog White's MX7 metal detector White's MX7 control panel WATER-RESISTANT HOUSING is perfect for land and shallow water hunting SIX ADJUSTABLE HUNT PROGRAMS. Coin and Jewelry, Beach, Relic,Prospecting, High Trash and All Metal. Plus, Pinpoint FAST RECOVERY SPEED. Pick out those good targets right alongside trash REJECT VOLUME™. Maximize depth and filter target responses by the intensity of the volume- 8 settings SALT TRACK. An option in all hunt programs, Salt Track enhances performance in wet sand, in some farm fields and in the alkali patches often found in prospecting areas TONE ID. Hunt in 1, 2, 4, 8 or 20-tone I.D. AUTO GROUND BALANCE WITH TRACKING. Grab options. Complete versatility to go from the park to the beach to the desert FREQUENCY OFFSET for hunting alongside other detectors OPERATING FREQUENCY 13.9 KHZ LIGHTWEIGHT DESIGN - JUST 3.5 LBS. ADJUSTABLE 3-PIECE ROD 8 “AA” BATTERY PACK included 9.5” CONCENTRIC WATERPROOF COIL (other Sport coils are available, sold separately) 2-YEAR PARTS & LABOR WARRANTY ADJUSTABLE ARMREST with arm strap Official White's MX7 Product Page White's MX7 Owner's Manual White's Metal Detector Forum