Garrett Electronics Gtax 750
By Mark Clayton
From Page 22
January, 2000 issue of Lost Treasure

I still remember holding one of Charles Garretts first detectors in my hands so many years ago and making my very first great discovery using that old BFO style unit. Throughout the years to follow, I dont believe I have missed a single model that Charles has made, in all the treasure hunting I have done. Dont get me wrong, I have used most of the models of the manufacturers in this country, yet somehow I find myself looking back down on a Garrett detector in my hands today.

Charles Garrett started his company Garrett Electronics from his first model he made in his garage to what it is now, one of the top leaders of the industry. Garrett Metal Detectors have been recognized for its top-of-the-line features, quality and excellent performance for decades, yet they continue to surprise even me with their outstanding advancement in technology and comfort while keeping the performance and quality they are famous for.

When I received the GTAx 750 several weeks ago I immediately noticed the light weight of the unit and its easy access to the touch control panel, as well as its great balance in my hand. I couldnt wait to give the unit a-run-for-its-money so to speak.


As many of the GTAs before it, the GTAx 750 uses the S style rod and handle with grip, alone with the counter balancing battery housing under the arm cup. Note; that the grip has changed from the original GTA grip, so that it fits your hands grip much more comfortable as if it was molded just for you. Also, the battery housing with headphone jack is removable like the previous GTAs for hipmounting the battery pack. The GTAx 750 has the ability to breakdown the detector and rods, so that it will fit in my suitcase or backpack for travel. The unit also comes equipped with a 8.5 inch Crossfire II coil and can be interchanged with any of the Crossfire II coils Garrett sells.

Thats enough of the design features lets go to the heart of the unit, the control housing. Looking at the face of the control housing, youll see the unit has a digital display that Garrett calls; Graphic Target Analyzer (GTA), an LCD type readout meter. This will give the operator the information on the targets found and the detectors operation. The LCD readout gives you possible targets in addition to, the audio sound you will hear when your GTAx 750s Crossfire II coil passes over an accepted target. Above the LCD meter readout is labels of possible targets such as nickel, pulltab, penny, quarter, dollar and etc. When a target is found, the LCD readout will indicate with a cursor under the label of the provable target.

Next are the touchpads under the LCD readout that will allow the operator to program the detector to the desired type of hunting that is needed.

The GTAx 750 comes with factory preset programs that gives both the beginner and the longtime hunter a great starting place. The preset programs consist of Coins, Jewelry, Relic, Zero, Beach and Custom. It was the factorys intent to make the detector user friendly by making the preset programs available to the user with the proper unwanted targets discriminated out. To see the difference in these programs, one only has to press Menu/Scroll touchpad and the Mode of operation will display on the LCD all the programs available to the operator.

Different degrees of discrimination are pre-programmed for you by the factory for the best performance from your GTAx 750. However, there are times when some preset programs can be just a little off. Garrett knew that, so they allowed you the ability to change their preset programs to your desired settings by using the + or - pads to add or remove individual cursors within the lower cursor bar that indicates your discriminate settings. If you find that you have a favorite program youd like to keep, Garrett provides a Custom mode. This mode allows you to select your own settings and program until you wish to change it.

The MENU/SCROLL pressed the second time will bring up Sensitivity, press again for Threshold, press again for Tone, again for Audio settings and again for Battery selection (rechargeable or standard). Each one of these selections allows you to change your settings by pressing the + or - pad.

The touch pads ACCEPT/REJECT is used for a fast way for the operator to pass the coil over a target that is not desired and reject it by a touch-of-a-pad, or accept a target in the same fashion. Last Mode touch pad is to allow the operator to instantly call up the last mode of operation that was used on the detector. Lets not forget the Pinpoint touch pad which is used when held down, to pinpoint your target in the center of the coil (X marks the spot). Now lets talk about a few real hunts where this detector was put through the paces.

Field Use

The very first weekend after I received the GTAx 750 was a field trip that I had planned for four months, great test for this unit. I love relic hunting and this site was a ghost town on the banks of the Brazos River and anything could be found there from coins to artifacts. I started on the back side of the property and worked my way back to camp. In places the grass was too tall to swing a detector, so you had to pick and chose your spots to hunt.

I set my GTAx 750 on the factory preset Relic mode, my sensitivity to 85 percent, my threshold to faint audio sound and my tone to midrange, I was ready to go. Most of these type sites are trashy with bits and pieces of metal of all kinds, so was this site, so I stopped and reduced my sensitivity to 80 percent which gave me a much smoother operation out of the detector. It wasnt long until I heard my first faint deep sounding target.

The LCD display indicated the target in the rings-gold area about midrange of the display. Using the pinpoint pad, the display indicated the target to be 6 to 7 inches deep, which turned out to be a all brass 10 gauge shotgun shell, 6 inches deep. It wasnt long before I had six 10 gauge shells in my pouch. Within minutes came the weak signal I was hoping for. The top cursor on the display was jumping from penny to quarter every swing. I pinpoint the display showed the target to be 8 to 9 inches deep. After some serious digging, I was rewarded with a 1877 seated quarter in excellent shape.

By mid day I had several interesting pieces of brass, shoe buckles, pieces of mouth harps, and a sun burn. I decided that I would wait until it cooled off in the evening before I searched any more. The afternoon hunt was much of the same targets, but I did find a Confederate eagle coat button.

My next trip with the GTAx 750 was at a small town, but with a big history. Back in the 1800s it was booming with riverboat business and one of the major towns in the state, but now it is a small town with old brick streets and sidewalks. That is what led me to the site, for someone told me that the town was systematically taking the bricks up and relaying them and the sidewalks.

I fired up the GTAx 750 and started in a large area where the bricks had been removed in the street. This time I set the 750 on the factory preset Jewelry mode and left my other settings the same as before. Within minutes good targets was seeing the light of day for the first time since the early 1900s. My first good target was a 1908 V nickel in good shape, found about 5 inches deep.

Next I found a 1912 D V nickel in excellent shape 6 inches deep, a .45 caliber complete bullet smashed at one time between the bricks and a few other interesting items. I then decided to stop at a site near downtown where someone had a truckload of the dirt and concrete dumped from one of the sidewalks. I heard a faint small target signal that the detectors display says is a dime or quarter. After a little digging, out pops an 1841 seated dime in A1 shape, my day is made.

I moved from that dirt pile to a sidewalk downtown just recently broken up. The 750 found a 1944 mercury dime and a 1945 wheat cent within minutes. By this time it was mid day and 103 degrees in the sun, so I called it a day.

The following weekend I decided to give the GTAx 750 a shot at the local swimming beach. I set the mode to Beach and started out across the sand. In less than an hour, I had found a set of keys, two necklaces, a toe ring, a nose ring, a junk ring, several earrings, and one small gold nugget ear stud. In all, the 750 worked great on the freshwater beach and show excellent depth and smooth operation.


The GTAx 750 I would recommend to any hunter for its comfort, smooth operation and excellent technology. Its LCD display exceeds many of the models out there to chose from today. It would make an excellent first detector and last detector for most any type of hunting need.
Copyright © 1996-2018 LostTreasure®, Inc. All Rights Reserved.