Jump to content

Recommended Posts

I have the Fisher F75 black which comes with both the standard 7in X 11in DD and the 5 inch round DD.  They also make a 3 in X 6 in DD (among others).  I like coils but don't like wasting $.  My question is simply:  "Is it likely I'll be able to see much difference (in the positive direction, that is!) if I buy the 3x6?"  I have read a couple posts on another forum reviewing the F75 3x6 coil positively, but I don't know if those people actually had the 5 inch for comparison.

BTW, I'd be happy to hear responses from those who have used 3x6 coils, whether or not they've used the Fisher.  For example, the White's MXT has both a 3x6 and a 5.3 (the latter a concentric, though).

Share this post

Link to post
Share on other sites

One of my favourite coils that is within the sizes that you have mantioned and i really enjoy using is the NEL Snake 6.5''x3.5'' i use one on my T2 and also a the UK version of the Vaquero called the Laser Trident11 Extreme,on both of these machines they perform superbly.


They cover slightly more ground that the 5'' T2 coil but target separation in my mind is slightly better,on trashy sites then the T2 with the Snake coil is my weapon of choice,then my 2nd choice for the next size up is the NEL SharpShooter 9.5''x5.5'',the Sharpshooter coil on my original green T2 has taken more gold coins ie full and quarter staters than all my other machine put together.

  • Like 1

Share this post

Link to post
Share on other sites

The Fisher F75  3x6" is an elliptical concentric, not a DD.    I don't use the small coils very often.   For small target hunting I would be more likely to use my 3x6 over my 5" DD just because it IS a concentric. 

But again I don't use them often enough to give you hard information. 



  • Thanks 1

Share this post

Link to post
Share on other sites

Hi i am using a 3x6 on my F75 dst and i love it found lots of good stuff with it on the Thames river not cheap as it comes at 105 pounds with a stem but in FA mode 65 sens and 80 GB i am having fun it pays for the machine in 3 outings after 65 sens in IRON infested site i dig more for rubbish and ID is crap 65 is the best for me ......but i guess on cleaner spot you can push it a bit .IT is perfect to search between rocks,founds a 15th century chess rooks,a 11 grams gold 18ct gold fragment a 14ct gold ring with a big diamond and many more stuff...lots of gold with it ...............so i am keeping that one




  • Like 1

Share this post

Link to post
Share on other sites

As Mike noted the Fisher 3x6 is a concentric, but there is the NEL Snake DD so you have both options. Are you using the 5" round coil a lot? There is not much difference between various small coils and since you already have the 5" that would be my go-to coil. Unless you are just looking for something to buy :smile:

  • Like 2

Share this post

Link to post
Share on other sites
4 hours ago, Steve Herschbach said:

Are you using the 5" round coil a lot?

Yes, in the heavy iron infestations.  If the iron isn't so bad I use the 5x10 concentric.  I use the 7x11 the least, but it's a good coil and the deepest.  Given its size and my style of hunting, I need to be in pretty quiet ground (meaning few nails) to be able to take advantage of the depth.  Thus it stays in the cabinet most of the time.  Now I say that probably having run all these coils at too high of a gain for the sites I'm hunting.  But from what I've read and experienced, the more iron, the smaller the coil that works best.

I'm getting a lot of good responses.  I think I'll sit tight with what I've got for a while.  I have a couple other detecting purchases on my list so I'll move those up and a tiny F75 coil down for now.  Thanks to everyone for your info and advice, but don't let me silence anyone.  I'm still listening....



Share this post

Link to post
Share on other sites

my two cents

I borrowed a 6x3 elliptical twice from a hunting buddy for extended periods of time.  I did not have the ability to check targets between the two coils.

In areas with higher grass or stubble, the lack of weight of the 6x3 but having a longer area to have to push through the stubble made it harder to have smooth sweeps for me.

When I would run the F75 in 1n process, the sweet spot of a consistent high enough number to give the monotone seemed to be narrower (front to back) with the elliptical.  I have been doing quite well in finding liberty and shield nickels this year, by focusing on numbers between the 15 and 25 range in the carpets of iron trash, once I get a consistent monotone.  Using the 5", my sweeps can be a bit off the dead center, and still give the monotone, whereas the front or back section of the 6x3 was more likely to not give the consistent tone and then numerical readings to make me dig.  Two sites in particular I hit pretty well with the 6x3 a year ago, and I have pulled 3 liberty nickels from one site and 1shield, a liberty and a couple buffalos as well, using the 5".  

Now that I am using AM almost exclusively when not in extreme trash, I might ask to borrow the coil again, but I have since purchased the 10x5 elliptical, and that in AM does a wonderful job for me.

  • Like 2

Share this post

Link to post
Share on other sites
57 minutes ago, rod-pa said:

...I have since purchased the 10x5 elliptical, and that in AM does a wonderful job for me.

Thanks for the detailed reply.  Here by "10x5 elliptical" do you mean the open concentric or the closed DD?


Share this post

Link to post
Share on other sites

Don't know about the F75 but on the Makro Gold Racer and Nokta Gold Finder comparing 5" to the 7.5x4", the elliptical has a sharper response, a clear depth improvement (although small), but bangs a bit harder on hot rocks. 

  • Like 1

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By Steve Herschbach
      No real information yet but this was just posted to the Fisher Facebook page. The Fisher F75+ is on the way!

      The Fisher F75 is the company's flagship model, and so I assume this is an update with some sort of additional features, otherwise we would be looking at a different model name. Time will tell.
    • By GB_Amateur
      I've linked to a thread I started in July.  I finally (after over 3 1/2 months, most of which were bone dry) returned to see if I could squeeze a few more old coins out of this site.  At the time of my earlier searching the parks department had fenced off a large coniferous tree to prevent the demolition crew from damaging its roots.  That had kept me out of that area as well.  Now with fence removed I decided to see if my good fortune in the rest of the recently acquired lot could be supplemented.  I was not disappointed.
      Fisher F75, gain of 50, 4H tones ('H' meaning US nickels hit on a high tone, with copper and silver), 5 inch DD coil, either de (default) mode or fa (fast) mode (both filtered discrimiation side) depending upon the amount of iron trash (nails).  Supplement that with my now favorites: White's Prostar headphones and White's TRX pinpointer.
      I was able to get in 8 1/2 hours over the weekend before the stormy weather arrived.  I didn't start under the tree but rather along the street curb, some of which I had searched once (without too much success) and some virgin.  After 2 1/2 hours with nothing more than a Zincoln to show for the effort I switched over to the unsearched area under the tree.  It didn't take long for the production to result.
      Deepest coin (Wheatie) was 5 inches; compare that with the deepest ring tab of 6 inches.  Even though I was running at a gain of 50 compared to July hunts' 70 I was finding targets at similar depth.  Most pennies were in the 3-4 inch range.   The silver dime (1945 plain -- see photo below) was only 2 inches deep.  So much for the theory that coins always sink considerably with time.  Over 50 years in the ground and only down 2 inches.  I added 14 more Wheats to the 36 I had found there in July, and my 5th silver coin (3rd Merc) from this reclaimed lot.  The sterling ring was also under the tree, likely dropped by a child many decades ago.
      With a severe storm approaching (my several hundred $ lightening indicator told me so ) I worked my way to the car, but dragged the coil along the edge of a couple sidewalks to see if anything jumped out.  With minutes to spare before the skies opened I got a strong but inconsistent ID signal.  I guessed either a nickel or a pulltab, got a low but clear signal from the TRX, and dug down about 3 inches to find...  gold!  16 grams of 14kt.  I told my wife that my best find ever won't be staying with me for long.  The owner's full name is inscribed on the inner surface so shouldn't be too hard to locate.

    • By GB_Amateur
      Both the F75 and T2 have suped up 'black' versions which have processes called 'boost' and 'cache' that their basic versions don't have.  Sometimes they used 'limited' and 'special edition' to distinguish these, but I don't think those always go hand-in-hand.  Nominally the basic F75 has a gold colored upper shaft while the T2's equivalent is green.  But has that always been the case?  I.e. if a unit has a black shaft (and of course if someone hasn't simply swapped it in for a colored one), does that unit have boost+cache processes?
      The reason I ask is for potentially buying a used one (e.g. on Ebay).  A lot of times it's easier to just figure out from a picture what a seller has than trying to get an answer out of him/her.  Often the seller doesn't know what s/he has.  I've seen on more than one occasion where a question tipped off a seller that s/he had a more valuable unit than thought, with the result being the item being pulled and later mysteriously relisted with a higher asking (or starting in the case of auction) price.
      I realize I could e-mail First Texas, but on the one hand they don't make a dime if I buy used, and the one time I wrote them with a question (about if a detector could be damaged getting close to a strong magnetic field) it took several days for a person (turned out to be a sales person) to answer, and even that was terse and, IMO, not sufficiently detailed.  Besides, often readers & posters here know as much or more on technical issues than 95% of the people who work at these companies!
    • By Steve Herschbach
      I have now put enough time on all these units to at least reach a basic conclusion in my own mind. And that is that they are far more alike than different. Trying to get clear differences to appear in actual field use in highly mineralized ground is a true exercise in hair splitting.
      A couple detectors that can be added to the title list are the Teknetics T2 and G2 models. First Texas owns Fisher and Teknetics. The T2 is the predecessor of the F75. They are not exactly the same detector (they do not share coils) but almost identical in performance. The G2 really is just a Gold Bug 2 in different clothes.
      13 kHz - Fisher F75 and Teknetics T2
      15 kHz - Nokta FORS Gold and FORS CoRe
      19 kHz - Fisher Gold Bug Pro, F19, Teknetics G2
      In actual use the frequency just about says it all. The lower frequency F75 and T2 are just a tad less sensitive to very small low conductors, like a small gold nugget. The 15 kHz FORS is almost an exact match to the Gold Bug Pro/F19/G2 for sensitivity to small low conductors and so despite the bigger frequency gap I would say the FORS models come closer to the higher 19 kHz models than the lower 13 kHz models.
      I have to say it all just boils very much down to the feature list, and again, they line up pretty well. The less expensive Gold Bug Pro and G2 have a more limited feature set than the F19. The F75 has the most options for tones and settings at the highest price on the list. The Nokta units at their new lower price are a real good value.
      For me when it came down to actual performance the Gold Bug Pro/ F19 were so close to the FORS models I let the two Fishers go and kept the Nokta. Basically just to get the automatic ground tracking which can be very useful in variable ground but also the three tone option, which is nice for coin detecting. I also like the way the Nokta units balance better with larger coils. All I can tell anyone at this point if you want a detector to use for nugget detecting and also for other purposes, the Gold Bug Pro/F19/G2/FORS Gold and FORS CoRe are so close in actual field use that it will all come down to the operator and ground variations. I think the machines are a toss up from a performance perspective and so just line up the feature list and go with whatever floats your boat. I think for sheer value at this time the Nokta FORS models are tough to beat.

      The T2 and F75 give up a slight edge on small low conductors. What this means is that all the previously mentioned models are better for smaller gold nuggets. The trade off is the T2 and F75 are better all around detectors for general purpose use, gaining in coin and other high end conductors some slight advantage simply because the machines are not quite so sparky on tiny non-ferrous trash. In moderate to low mineral ground conditions the T2 and F75 have a clear depth advantage on high conductive coins but in very mineralized ground the advantage is nearly non-existent.
      In my case at least I feel like there is a 90% overlap between my latest version F75 and the two FORS models. If I head out the door right this second to go hunt coins I am more likely to grab the F75 as I like the extra tone schemes. There is the 3H mode that gives a high tone beep on all normal coins but also takes US nickels, which usually reads as a mid tone, and puts it up in the high tone range also. This is a great cherry picking mode. The standard 4 tone mode is great for cherry picking jewelry digging the low mid tones. I like the big screen and the backlight, etc. So I am also keeping my F75.
      But if I was heading out the door chasing gold nuggets right now in a really trashy location and not wanting to use a PI, I would grab the FORS instead. It pulls low conductors like small gold nuggets out of the ground better than the F75. Not by a huge margin, but enough to matter to me.
      And that is where it will stay for now. I am waiting to get my hands on the new Makro Racer models this summer, and using the F75 and FORS plus Racer units all summer. Then proceeding to phase two of the weeding process. I am trying very hard to get my detector collection down to just a couple PI detectors and a couple VLF detectors. It is down to that stage of the game however where it just needs a lot more in field use to let things sort out for me.
      What I can leave you with for sure right now however is that these are all very good detectors that are ridiculously close in performance. You really just can't go wrong with any of them. Mid frequency VLF technology has matured to the point where it is almost impossible for anyone to really stand out from a performance standpoint. Nearly all the performance debates I see on the internet about these models boils down to differences in ground mineralization more than the machines themselves. Just find one that feels right on your arm and sounds good to your ear and get to work!
      This is very much a work in progress and so as I get a chance to use the large coils or hunt under different ground conditions if I come up with anything if interest I will add it here. There is a related thread on VDI numbers and tones at http://www.detectorprospector.com/forum/topic/526-fors-gold-f75-v3i-tone-and-vdi-tidbits/
      For detailed information on each model plus the latest prices visit Steve's Guide to Gold Nugget Detectors
    • By Steve Herschbach
      Snow on the ground so time for a little bench testing. Fisher F75 SE version 7.0A (2013) with 5" round DD coil, Nokta FORS Gold with 5" semi-round DD coil, and White's V3i with 4" x 6" DD coil.

      The table shows VDI numbers on some standard items. The little allen wrench is like a small nail - a ferrous item. The BIC ballpoint is my standard simulated small nugget. The ring is my 14K plain gold band, around 7 grams.

      The VDI range on the Nokta runs from 1 - 99 with 40 and under generally ferrous. The F75 runs from 1 - 99 with 15 and under generally ferrous. The White's V3i runs from -95 to +95 with negative numbers generally ferrous. I say generally because in all three cases gold can run well into the ferrous range. Like by 10 - 20 VDI numbers into it!

      A few big lessons. The Nokta FORS VDI 1 - 99 range is skewed with high conductors bunched on the high end of the scale with most of the scale devoted to ferrous and low conductive items. This is ideal for relic hunters and prospectors. Silver coin hunters however usually prefer the scale to devote more room on the high end to possibly get a better handle on what is silver and what is not.

      The ferrous range of the Nokta actually runs all the way down into the ferrous ground range itself which is why there are 40 numbers devoted to it. The ID Mask setting defaults to 10 and if set lower allows ground signals to sound off. Since non-ferrous starts at 40 and I arbitrarily end low conductors at zinc penny on the upper end you have 40 - 82 or a spread of 42 points for low conductors. This really is no more than an average spread due to the large ferrous range.

      What I was happy to see is the simulated nugget (BIC ballpoint) nailing at 44 as a non-ferrous target.

      Contrast this to the F75 1 - 99 range. There are only 15 points in the ferrous range with the extreme low end represented on the Nokta scale truncated roughly in the middle. However, this leaves 16 up to 62 at zinc penny for a low conductor spread of 46 or slightly better than that on the Nokta FORS and leaves room for a little better definition for high conductive coins also. There is a ten point VDI spread between a dime and a quarter versus only 3 points on the Nokta.

      What disturbs me on this particular F75 is that having tried multiple coils I am getting the same result on the simulated nugget test. It wants to nail at a solid 1 which is well under the ferrous 8 reading for the allen wrench. This is not shocking but it is not good either. I can get the ballpoint to break in at 16 occasionally but it should be there hard and solid, not rarely. I had Keith Southern test his updated F75 and it seems to do better. I need to test this again when and if I ever get an upgraded F75 but it does confirm my suspicion that at least some Fisher units are not properly aligned at this critical break point.

      The White's V3i slays both of them with White's standard spread of 190 VDI points with half that devoted to ground and ferrous. A full 95 points is devoted to non-ferrous, giving a nice spread across the whole range. The V3i is a three frequency unit and the 22.5 kHz frequency employed allows it to easily nail the ballpoint test with a solid VDI of 3. White's even allows the 22.5 kHz frequency to use a native VDI range that skews and expands the low conductive range that delivers a VDI of 10 on the ballpoint, a very nice cushion between it and a ferrous reading. you have from 1 all the way up to 55 for zinc penny slightly beating both the Nokta and F75 for VDI resolution on low conductors and still room left for very good definition in the high conductor range.

      These detectors can employ a dual tone mode that delivers a low tone on ferrous targets and a higher tone on non-ferrous targets. The break point on the Nokta and F75 is preset at the factory VDI breaks of 13 and 40. The V3i you can customize not only the VDI break point but the tones.

      The F75 dual tone mode is pretty straight forward, with the volume being weaker or louder depending on the strength of the signal. In other words, a modulated audio. The Nokta Boost or DI2 mode uses a VCO (voltage controlled oscillator) audio where both volume and tone increases with signal strength. Anyone that uses a Fisher Gold Bug is familiar with VCO audio. It is rather unique and some people like it, others do not. Again, the V3i allows the tones to be customized any way you want, with either VCO, modulated, or even unmodulated options.

      Things get more interesting in Nokta DI3 or F75 three tone options. The low tone break for ferrous is the same but a third higher tone is added. On the Nokta zinc pennies and higher or from 80 on up delivers the third high tone. On the F75 it breaks above zinc penny so those pennies fall into the middle tone low conductive range.

      Zinc penny is also where Indian head pennies and some other old coins can fall. If you hunt strictly by ear and dig high tones only you are going to pretty much dig all coins but nickels. With the F75 it is geared more towards silver hunters so zinc pennies, Indian heads and possibly other coins would get passed up as low conductors. But wait! The F75 also has a four tone option that puts that zinc range into into own fourth tone - problem fixed. You can chose a tone option that focuses more on silver only or one that breaks out that penny range. Jewelry Hunter would probably prefer the 3 tone mode and dig just mid-tones. The bottom line is the Fisher has more tone options for the coin hunters than what the FORS offers.

      Of note is that the Nokta DI2 dual tone mode uses VCO audio, but the DI3 three tone option defaults to a more normal modulated audio. DI3 favors a faster sweep speed than DI2 which benefits from going slower. A generality would be that DI2 is more powerful but DI3 better behaved.

      The V3i again is unchallenged. You can actually go so far as to independently set a separate tone for every single VDI number, and the tones can be any from 191 tone options. You can make low conductors high tone if you want. Absolutely nothing on the market compares to the V3i for audio and visual customization options.

      Well, this all seems pretty easy, right? Just get the V3i and get on with business. Sadly, these are air tests. You might ask, for instance, which detector did best for "depth" in these air tests, as if there actually is such a thing. I only pay passing attention to that but the F75 seemed to be doing very well in that regard. Here is the problem with this entire lesson and all my typing. When you put things in the ground all these nice air tests rapidly decay and fall apart.

      In very mild ground or on very shallow targets detectors can be amazing. In my ground unfortunately VDI numbers start breaking down at around 3-4 inches! What you discover is that if you get too focused on cherry picking VDI numbers good finds deplete rapidly. Almost all accessible public areas have been detected for decades. So the easy accurate VDI results have already all been cherry picked away. The best finds these days often come from digging targets that were passed up precisely because they did not give a perfect response.

      In my opinion, these days we have to cast a wider net and be willing to dig more trash to make those exceptional finds. What that means is huge numbers of VDI numbers and tones although flashy and fun often is no better than just using a simple two or three tone method and going for it. Styles differ vastly and because really this is about enjoying ourselves there is no right or wrong way to do things - as long as you are enjoying yourself. For me, something simple like the Nokta DI3 tone option for digging all high conductor possible coin signals actually works pretty well in actual practice. If I want coins except nickels just dig high tones and have fun. The F75 allows a special mode that kicks nickels into the high tone range so you can do the same thing and get the nickels also if you choose. The V3i by now you should know the story - set it up any way you want.

      Still, tests like these are very valuable to me in setting the baseline for performance in the field from which I can work to discover how much things vary and hopefully why. The theoretical goal if finding a machine that adheres as closely to bench testing results as possible in the field. Sometimes you get textbook results, but then at another location everything goes haywire. But unless you know where you are starting from you will have no idea what is going on.

      I will sum this up for now by saying that the Nokta FORS is a machine that appeals to simplicity and leans towards relic hinting and prospecting. That is not to say you can't do well coin detecting with it, it is just that it is not set up with coin detecting specifically in mind. The F75 nicely straddles the middle for all detecting purposes.

      The V3i is in theory the perfect detector but the reality is huge numbers of people have discovered more options does not always mean better detecting, and it is not unusual at all for people to abandon the V3i in favor of simpler machines. Unless you spend a vast amount of time with a V3i it is hard to feel like you have mastered the machine. The V3i appeals to my inner detector nerd but it is usually the case where in the field I prefer simpler machines myself. Still, I made the V3i part of all this just to see how it really does do if given a fair chance and at least when bench testing it is impressive to see all the bells and whistles in action.

      This is all just stuff I am finding out for myself. I have no real reason in reporting it to you other than just to be sharing some info that is taking at least a little effort to collect. It helps me digest it better trying to put it clearly in a form you can better understand. Hopefully it will help someone in their own choice in a detector. As you may be figuring out if you have not already, there are no best VLF detectors, just lots of really different VLF detectors. They all actually do a good job finding stuff but it is in how they go about it that differs so much. It is mostly a case of finding out what style and type of detector works best for you.
    • By Steve Herschbach
      Fisher just dropped the price of the F75 Ltd (also known as the Special Edition) from $1099 to $799. This is the most deluxe version of the F75 that comes with two coils, the 11" x 7" DD and 5" round DD. The F75 was an offshoot of the Teknetics T2, which although intended for coin and relic detecting, became a bestseller in Africa for gold nugget detecting. The F75 is every bit as capable and I found quite a bit of gold with mine. The Gold Bug Pro is the better choice for most people, at a lower price and with a bit more hots for gold, but for those wanting a top of the line do-it-all machine the F75 Ltd has been Fishers answer for many years now. I always appreciated the T2/F75 ergonomics, which as far as I am concerned still set the standard for what feels best on my arm. The F75 weighs more than a DEUS, but shows just how important proper balance is.

      The question of course is - why a $300 price drop? Fisher did drop the price of the base F75 some time ago to $599 and left the F75 way up there, so it may have been too much differential, hurting Ltd sales. There are the persistent rumors of new Fiser models in the pipeline, and this may be a clear the decks thing.
      I tend to think the previous price drops in the base T2 and F75 were a response to aggressively priced models from Nokta and Makro. That this price decrease comes immediately on the heels of the introduction of the Nokta Impact at $849 does not seem to be a coincidence to me. That may be the case, but inside I am hoping it is more a sign of new models to come.
      Regardless, killer price for a great detector package! I have been thinking for a couple years that with competition heating up we would start seeing prices finally come down. When I look at the T2 in particular I am amazed at how much detector we can get now for only $499. Probably the best bargain in detectors right now.
      Now if Fisher would just drop the price of the Fisher F19. I like that machine but at $699 the price is nuts now compared to the other models.