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GM24k Controls 

14 Garrett Metal Detectors

Gold is usually found in mineralized 

ground, and the 

GM24k

 has XGB en-

abled by default when the machine is 

powered on. This makes it easy to get 

started prospecting, as the machine 

automatically cancels out unwanted 

mineralization so you can focus on 

listening for targets.

However, there are times when you 

may want the option to LOCK the 

ground balance control, or even 

display the ground information on 

screen. The comprehensive ground 

options on the 

GM24k

 allow you to 

do both of these things quickly and 

easily, without menu-diving.

XGB

The original 

Goldmaster

® featured a revolutionary ground filter system that was quick to respond to min-

eralization changes. XGB is the automatic ground tracking method used by the 

GM24k

, and features an 

all-new method and algorithm. For users this means that they can use this detector in a wider variety of 

ground conditions with more stable operation and less ground noise. When coupled with the Iron Cancel 

and SAT settings, you have a truly versatile set of tools to combat nasty ground.

XGB is the default setting on the 

GM24k

, and is recommended for most users in most conditions. It has 

the ability to track a wide range of ground, from ferrous to alkali, and features an increased tracking speed 

over previous models without hurting sensitivity to small nuggets. The arrows above and below the LOCK 

icon indicate whether XGB is tracking up or down in values.

The algorithms used in XGB also give the 

GM24k

 an edge due to the ability to track multiple ground points 

simultaneously. In highly variable grounds this is a huge benefit, as you may encounter wide enough swings 

in ground phase to render other machines almost unusable.

Even though XGB is the suggested ground setting, advanced prospectors know that there are times when 

more control over the ground settings can equal more gold in your pouch. Details on these settings follow.

Ground strength
in GroundScan

TracLock ON

TracLock ON (tap)

Ground Scan (hold)

Ground Grab

Ground Phase
in Ground Scan

Ground Balance  

Controls

Summary of Contents for 1142650

Page 1: ...Original GM24k detector USER MANUAL...

Page 2: ...l the ground is often the biggest challenge faced in the search for gold That s why the Goldmaster 24k features a special ground tracking system called XGB Xtreme Ground Balance It works with multiple...

Page 3: ...oles in the curved S stem Turn camlock to secure 3 Fit the rubber washers between the lower stem and searchcoil ears Use only non metallic washers fiber bolt and thumb nut to secure loop to the lower...

Page 4: ...ing in one of the optional positions If necessary readjust clevis lower stem length with the spring clip buttons so that the search coil can be held near the floor without requiring stooping over 6 A...

Page 5: ...ut when the volt age remaining becomes too low for proper oper ation the battery icon will begin flashing Once the batteries get to 8 volts the machine will turn itself off to keep from over dischargi...

Page 6: ...Mode SAT Volume Threshold Iron Cancel Disc LO HI Visual Target ID Ground strength in Ground Scan mode Backlight On TracLock On Sensitivity Power On Off Backlight TracLock Ground Scan Sensitivity Adju...

Page 7: ...d follow the instructions below to start finding nuggets Turn the GM24k on by pressing the POWER button Set the VOLUME to your preference tap Speaker icon use Up and Down buttons Set the THRESHOLD to...

Page 8: ...Reduce the SENSITIVITY until the overload warn ing ceases On occasion while searching you might go over a very large or very shallow target This will result in the same type of behaviour Lifting the...

Page 9: ...searchcoil speed will maintain smooth threshold it will also allow the searchcoil to get clear off of the target with each pass insuring that the GM24k sees ground as well as target This is essential...

Page 10: ...rence but in general the best range of target sounds will be available with a high volume and low threshold At volume levels 9 and 10 you will see b1 and b2 on the display as these two levels enable c...

Page 11: ...display when adjusting SAT SAT Adjustment The Initial Setting is 1 medium appropriate for mild to moderate ground mineralization When you encounter fast changes in ground minerali zation or deeper la...

Page 12: ...gs SAT Volume Threshold Iron Cancel etc have the same effects in both audio modes This allows maximum flexibility for different users Target ID Higher number Better chance of gold Visual Target ID Bee...

Page 13: ...ncel in either Beep or Zip mode tap the Nail Icon This will engage the Iron Cancel feature at the default setting You can adjust this setting up or down by holding the Nail Icon then using the Up and...

Page 14: ...ion and less ground noise When coupled with the Iron Cancel and SAT settings you have a truly versatile set of tools to combat nasty ground XGB is the default setting on the GM24k and is recommended f...

Page 15: ...re walking over More ferrous soils tend to produce a larger ground number whereas more alkali soils will produce a smaller number Ground Grab will also display the ground phase when the GM24k is in XG...

Page 16: ...pinpointing method the Goldmaster 24k also features a non motion pinpoint mode This is engaged by holding the crosshairs button large button in the middle of the key pad With this button held down th...

Page 17: ...lightweight summer models that offer a bit more safety in snake and bear country are available on the market Higher impedance headphones 60 Ohms or greater give the most sensitivity and are better for...

Page 18: ...with other VLF detectors a nail or oblong piece of iron laying horizontally will produce a double beep A good target is considered anything that is not IRON You want to detect lead brass copper alumin...

Page 19: ...lt of the ground phase shifting rapidly under the coil The first step you should take is to increase your SAT setting by holding the Music Note button and then tapping the Up but ton to set the SAT to...

Page 20: ...nd that is why they are so hard to differentiate The XGB will track some of these out automatically Using a higher SAT setting can also decrease your GM24k s response to these positive hot rocks Using...

Page 21: ...be necessary to use the SAT feature and or reduce the SENSITIVITY control This noisy behavior will make it difficult to recognize a true target possible nugget from pieces of mineral commonly referre...

Page 22: ...arly flat thin steel such as a can lid very large pieces of iron and small solid pieces of iron like heavy washers Because this is a gold detector it was essential to design it so that it would tend t...

Page 23: ...or long remove the battery holder from the detector and remove the batteries from the holder C Store the detector indoors in an area where it will be protected from abuse Over the years White s has no...

Page 24: ...lt You should also make certain you have 1 Checked your battery charge and connections A low battery is the most common cause of detector failure 2 Contacted your dealer for help particularly if you a...

Page 25: ...Goldmaster 24k User Manual 25 QUICK START...

Page 26: ...2021 Garrett Electronics Inc PN 1557000 B 0721...

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