GTAxâ¢ 550 - Garrett

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interference and irregular ground mineralizationmay sometimes require reduced sensitivity whichusually results in less detection depth.Do not worry about losing "deep" targets whenyou reduce this setting. You will not lose any depthsince you will always be operating as deeply as soilconditions permit.Attempting to operate above a sensitivity level thatpermits a quiet and stable audio threshold mayactually cause you to miss deep targets you wouldhave found had you not "pushed" the detector.5. ACCEPT / REJECT - Permits acceptance orrejection of specific target segments shown on theLower Scale to establish discrimination notches.6. SET AUDIO - Permits using the + and -touchpads to regulate the audio threshold. Whenthe audio touchpad is pressed, the display screenwill appear, use the (+) and (-) touchpads to adjustthe threshold of sound that is constantly being18
produced by the GTAx 550 as it scans. Multipletouches and releases are necessary to increase ordecrease threshold by one Upper Scale segmentat a time.You can search silently or at any level of constantsound. It is recommended that you always operatethe instrument at a minimum level of sound. You canhear the audio increase sharply whenever a targetis encountered.Also, you will be able to hear even the faint signalsthat sometimes occur on tiny targets or deeplyburied coins. When headphones are used, it willusually be necessary to decrease the threshold levelsince sound is more audible through headphones.After you have made audio adjustments, pressAUDIO to re-enter your previous operating mode.The GTAx 550 is equipped with Garrett's exclusiveBelltone Coin Alert that produces a distinctiveringing tone when a target of high conductivity,usually a coin, is discovered.19
Page 3 and 4: target acceptance / rejection, prec
Page 5 and 6: Making Adjustments 29Mode A (Zero D
Page 8: GTAx 550 ASSEMBLYNo tools are requi
Page 14 and 15: weighs less than 2 pounds. Yet, all
Page 16 and 17: 2. PINPOINT (Coin Depth) - Activate
Page 20 and 21: - AND + - Use these touchpads to ad
Page 22 and 23: Target IdentificationTarget identif
Page 24 and 25: You can also watch the Upper Scale
Page 26 and 27: The Upper Scale of the graphic disp
Page 28 and 29: Junk TargetsYour GTAx 550, in its f
Page 30 and 31: Relic hunters, prospectors and othe
Page 32 and 33: Setting Discrimination (SelectingNo
Page 34 and 35: Note: Each time the detector is tur
Page 36 and 37: BENCH TESTSBench Tests enable you t
Page 38 and 39: TEST PLOT CONSTRUCTIONAs you operat
Page 40 and 41: BATTERIESThe GTAx 550 is equipped w
Page 42 and 43: 5. Press out the old batteries from
Page 44 and 45: The 9"x12" PROformance—Use to inc
Page 46 and 47: SPECIALIZED HUNTINGFor literature t
Page 48 and 49: Since the 550 is a motion detector,
Page 50 and 51: You have carefully packed the detec
Page 52 and 53: Charles Garrett's Ghost Town Treasu
Page 54 and 55: MAIL-IN ORDER FORMAdd $2.00 for fir
Page 56 and 57: control, display and panel.• Conv
Page 58 and 59: • I will observe the Golden Rule,
Page 60: 1881 W. State StreetGarland, Texas

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GTAxâ¢ 550 - Garrett