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Teknetics Delta Review
Posted by: Mark still in NC
Date: February 04, 2009 03:56PM
Teknetics Delta Review

Mark Ellington

*Review based on early version...subject to change!*

The Teknetics T2 has developed quite a cult-like following since its release! With good reasonIt is powerful, lightweight and innovative. It is chock full of useful features that appeal to advanced users in this wonderful hobby.

The Teknetics name has long been synonymous with performanceand that legacy is continued with the launch of the new Teknetics Delta 4000. Lead Engineer on the Delta is John Gardiner. He has had a hand in many recent metal detector releases, including the Fisher F75 and F70. He was backed up by Jorge A. Saad (see my Fisher F5 review for more on him) who wrote the core software code. The legendary Dave Johnson designed the hardware and is overall Lead Engineer for the Teknetics line of metal detectors.

The Delta will be the first of several new Metal Detectors coming to the Teknetics familythe Delta, the Gamma and the Omega. The Delta is positioned as a user friendly, yet very powerful machine!

On screen information includes:

1. Mode Setting
2. Menu Setting
3. 99 digit target ID
4. Icon target designators
5. Battery life meter
6. On-the-fly depth gauge

Appearance and Construction:

The Delta sports a visually appealing black and green color scheme with silver and black upper/lower rods. The display is large, clear and sharp with red overlay that contrasts the black LCD nicely. The Delta utilizes the same rod system seen on the F70/F75 (which is super light, but solid). The armcup/stand is a black ABS plastic with rugged closed cell foam in the arm cup.

The Handgrip is a grippy foam that covers the entire grip section of the rodit allows for more grip options and less time readjusting. The handle angle (an often overlooked feature...until you feel some pain!) seems just right, and the grip material comfortable enough for hours of hunting.

The rod locking collars are nice and tight and feel very secure while swinging awayno flex is felt. One of my favorite things about these rods is the great range of adjustability. I'm around 6' tall, and still find myself in the mid-range of available length adjustment. There seems to be plenty of room for taller and shorter hunters.

The control housing is has excellent viewing angles and is easily accessed by your thumb. I really, really like this style housingit is light but rugged, offering a nice precise battery door fit.

The Delta has an internal speaker that does an excellent job in conjuction with the built-in volume control. For headphone use, theres a 1/8th" jack AND a 1/4" jack! This, as far as I know, is a FIRST in the industry! No matter your headphone preference, you're covered! you can see in the photo, I enjoy using some lightweight Koss phones due to the internal volume control...and plenty of loudness from the circuit. However, if I want to use my old heavyweight phones, I don't even need an adaptor! Pretty durned COOL!

Power and coil:

The Teknetics Delta uses a single 9 volt battery for power! Conversations with Engineer Dave Johnson indicate one of his pet peeves is inefficient metal detector circuitrythis is very evident in his recent designs. Battery life is phenomenal given the performance observed. Expect over 20 hours from a single battery! The design evidently efficiently focuses the power where it counts.

The Delta comes with an 8 inch concentric coil. This coil feels surprisingly light, contributing to the amazing overall feather-like weight of the detector. The coil fit is very precise, allowing no coil flop that seems to happen on some machines.

Controls and Functions:

The user interface on the Tek Delta is very intuitive. There are 2 Sections on the face, with two buttons below to access each.

They are Mode and Menu

MODE lets you choose between DISCRIMINATE and ALL METALS operating modes.

MENU allows you to change functions for each MODE as chosen:

1. Sensitivity for both DISCRIMINATE and ALL METALS modes
2. DISC. LEVEL for DISCRIMINATE mode (determines you to eliminate unwanted targets)
4. VOLUME for both modes (Volume is very handy for using small lightweight headphones without a separate volume control)

Adjustments are made using the arrow buttons on the right of the face:

Hunting with the Teknetics Delta

My first thought.Man! this thing is LIGHT! The weight and balance mean you can hunt all day long! Let me put it like thisthe rest of me wears out a long time before my swinging arm does.

The Delta has no ground balance adjustment, yet it seems to handle the various soils Ive exposed it to amazingly well (all soils are different...this is for mine)Switching over to all metal mode, you can hear the circuitry quickly adjusting itself to the ground. From previous fixed ground balance detectors Ive used, I expected a substantial loss of depththat has not been the case for me. In my test garden, Ive been able to accurately identify coins down to the 8 inch range, and hear a deep silver dime I have buried 8 to 10 inches (sinkage has changed it over the years). This same deep dime screams at you when hunting in all metal mode! The ALL METALS mode has power to sparesurprising power.

Discrimination is greattotally blanking eliminated targets. Reset speed is very impressive, which will help when using discrimination and trying to find closely co-located targets. Optimal swing speed seems to be very forgivingI dont seem to lose much if any depth when slowing or speeding up. Quick transitions from one soil type to another (ie; going from chip bark to the surrounding dirt) doesnt cause any falsing, which can be the case with some preset ground balance detectors Ive used.

Using Notches in a very simple affair. Simply pick NOTCH with the MENU button and begin pressing the UP arrow button. When you get to the target you want to notch out (foil for example) pause when the blinking indicator reaches it, and it will be notched out. You can notch out anything in the icon bar all the way through ZINC. Another cool feature is to be able to notch in targets. For example, you can run discriminate all the way up to ZINC, then NOTCH in 5 cent. A handy way to handle some quick cherry picking!

All-in-all, Ive put around 40 plus hours on the Delta, and I am very impressed! I consider myself a top end detector junkieIm one of those types that always wants the high end machines. The simplicity of operation for the Delta reminded me of just how much fun the hobby of metal detecting can be when you dont have to spend a ton of time adjusting just works!..and works amazingly well. Carefree coil jockeying can go a LONG way towards stress reductionand isnt that what its really all about?

Here are a few clad, wheat and silver Delta finds

Mark in NC

Great Review...
Posted by: Andy,NM
Date: February 04, 2009 04:40PM
.....and i agree with you 100%. Especially the depth of the All Metal Mode is scary for a detector that uses only an 8 inch coil. Easy to use out of the box power with a weight of just about 2 pounds.


Thanks Andy...
Posted by: Mark still in NC
Date: February 05, 2009 10:03AM
I've had a ton of fun using the Delta. I was extremely surprised by the power in a unit at this price even competes with some of the machines that cost quite a bit more...and I've used a bunch of 'em! (too many!) What's amazing me about First Texas is the ability to rapidly evolve the machines and platforms for constant improvement... a lot of companies release stuff every couple of years or so (if that often). The Engineers at FT have managed to do what would probably be deemed impossible by most...turn out a ton of different models in a very short time... I'll bet they'll be the first to admit there were some "growing pains" in trying to do this, but I have to admire the daylights out of Dave Johnson, John Gardiner, Jorge Saad, Mark Krieger (and probably more unsung heroes). They had the guts to attempt what would normally be seen as impossible! We, the end users, are the winners. The competition motivates the other Companies to get busy...and keep innovating.

I was as big of an detector "snob" as anyone when I first read that FT was buying Fisher... I looked down my nose at Bounty Hunter brand as something "beneath" me... I like the "high dollar" stuff... 'cause, if it costs more it's gotta be better! :) However, when I heard that First Texas had hired Dave Johnson (THE man behind the CZ's and a ton of other detectors including the MXT, DFX, Lobo ST, Shadow X5 and a ton of other high performance detectors.) I thought "Woah! First Texas is SERIOUS about getting into the high end detector market!"...and I was right. The Tek T2 broke the mold for innovation... and subsequent machines have offered unique "usable" features that actually bring something to the hobby. The result of all this new stuff going on at First Texas with Dave Johnson on staff is a trickle down effect... cool new, innovative and efficient ways of building and designing things has begun working its way into the Bounty Hunter line...and the ones I've used are great! My "snobbery" is officially gone! For the buck, they just can't be beat...and they will find "stuff" with any machine on the market... My favorite all-time detector is still the F75... but I would NOT turn my nose up at any of the new Teknetics machines... so far, they are looking to be outstanding machines!

I've had the honor of getting to field test several First Texas built detectors and am very appreciative for the opportunity...however, no one asked me to post's all my opinion...and mine alone. I understand we can't all agree on things, but I've had nothing but good experiences with the Folks at First Texas...


Mark in NC

Re: Teknetics Delta Review
Posted by: cj/from/pa
Date: February 21, 2009 08:28PM
Hello, I am new to metal detecting,my wife had gotten me the delta 4000 for xmas, and everyone was poking fun at me for having that on my wish list.. so I cant disappoint them by not finding the treasures buried beneath.
I have never really used a detector before and with spring approaching I was hoping to be able to understand the different tones ,and understand if it is a false signal, with the help of this forum I would like to learn and collect as much information that I can . So if anyone is interested in giving some pointers with some experience,would love to hear from you.Thanks and happy hunting!

Posted by: BuckeyeBrad
Date: February 21, 2009 09:14PM
There's two facets to learning this hobby. The first is the obvious and most of that is covered in your owners manual. The second is the not so obvious and a lot of that has to be learned by hunting, digging about everything and then making a zillion mental notes to build on and recall from later. As you go through this second level and you really get one of those "head scratchers" or something you can't figure why it happened, bring that up to the forum and I'm sure you'll get all the help you need. Be patient, observe, and most of all have fun as you learn about a great hobby!!

Re: CJ....
Posted by: Merf
Date: February 22, 2009 11:32AM

Edited 1 time(s). Last edit at 02/22/2009 11:45AM by Merf.

Yes Merf, there's two facets to me too...
Posted by: BuckeyeBrad
Date: February 22, 2009 11:50AM
the serious and the not-so-serious. :wink: I hope you didn't edit your post on my account.

Re: Yes Merf, there's two facets to me too...
Posted by: Merf
Date: February 22, 2009 04:56PM
the serious and the not-so-serious. :wink: I hope you didn't edit your post on my account.

Yes I did----I started to make a post mimicking your goofy post on the air test thread
but after some thought I decided that clowning is a waste of time .

Re: CJ
Posted by: Steve from Iowa
Date: February 22, 2009 06:08PM
CJ, I have a Delta 4000 and I'm learning it bit by bit. What helps me is to go out with an experienced detectorist who can comment on your signals after checking with his own machine.

Re: Yes Merf, there's two facets to me too...
Posted by: BuckeyeBrad
Date: February 22, 2009 08:58PM
Jackpine and I have done that little play around with the characterizations of the movie "Grumpy Old Men" several times during the winter months over the last couple years. Probably didn't make much sense if you weren't aware of that. :bouncy: So, do you ride a V-Rod?

Re: Teknetics Delta Review
Posted by: jeeper
Date: February 22, 2009 11:00PM
I apologise but I have a question, not a review to add. I have been looking very hard at this detector, looks great and at the price my wife can handle at the moment. How is this unit with jewlery hunting in wet sand? I live inland california, we are in the middle of drought year, but the sand is still damp and apparently that is the excact condition my current detector dispises. I have no plans on entering the water, and I will probably not see sea water for several years with my detector. Thank you guys for your input. I am a newbie and this is the only forum I have found with a deticated thread for the Delta.

Re: Teknetics Delta Review
Posted by: Mark still in NC
Date: February 24, 2009 12:33PM

I haven't used the Delta at the beach, but a friend of mine has. He said it seems to hit hard on targets in the dry and damp sand. The really wet salty sand (waters edge) can be tough for a single frequency detector...for some beaches, you can begin moving the discriminator up the scale, and somewhere around "foil" it will take negate the chattering. The Delta seems to be very sensitive to jewelry. I've found a few rings since using it..and one was very small.

Hope this helps,


Mark in NC

Re: Teknetics Delta Review
Posted by: cj/from/pa
Date: March 13, 2009 04:13PM
Ok.... I have been in the backyard digging hole after hole,still confused on the target id numbers. just say it says ( zinc) and then the next time i scan it . It says dime in the same hole.. am i doing something wrong? Could someone maybe narrow list down ,like where does a gold ring or watch buzz in at and under what metal. what sounds should i ignore?
I did find a Jefferson war nickel,but it had a hole drilled thru the center of it. Is a quarter a quarter, and a dime a dime. I know this is asking some ridiculous questions but a response would be great.

Well since nobody seems willing to step forward & help you out I'm going to give it a shot.
Posted by: BarnacleBill
Date: March 15, 2009 06:42PM
Firstly I don't own the detector that you have but I have been at this hobby for about +28 years. It looks to me that you are new to the hobby and still on training wheels. No shame in that, everyone begins at the beginning.

What you are experiencing is known as falsing, and can have several causes which through experience you learn to recognize and deal with.

First off it is a possible ground balance problem. But since your detector has no control for that then reducing sensitivity is the only way to deal with falsing caused by that.

Second it is possible it is an electrical interference problem. But since it looks like your detector has no frequency offset control, then the only way to deal with it is to reduce sensitivity or move to an area without the interference.

Third is the possibility that your yard has a lot of trash/iron targets. Once again reduce sensitivity, shorten your sweep, and make smooth consistent sweeps.

Find an area with no targets, lay out some coins about 2ft apart and practice swinging the coil and getting used to how the detector reacts.


Re: Teknetics Delta Review
Posted by: Steve from Iowa
Date: March 15, 2009 09:29PM
What do you dig up when these shifts occur? My experience is that when the target jumps about in terms of its reading, it is usually iron. When I get this event, I slowly raise the coil as I swing and if the signal is still coming after the coil rises a foot off the ground, it is usually large iron. I learned to pay less attention to the visual readouts and pay more attention to the "feel" of the sound. When it is a clear sound and you get the same clear sound after swinging again at a 90 degree angle to the first swings, it is usually a good target. Try reading some forum posts which give advice on "tips" for detecting. They helped me out.