Jump to content

Fisher Impulse AQ Discrimination Explanation


Recommended Posts

Steve , back on your diagram page 6 ( the modified version of a Minelab Equinox chart for the AQ), there is something which is not clear to me with this chart :

In summary , this shows shows the PI detection scale like this, from left to right :

1. Small ferrous /     2. AQ detecting range /   3. Iron nails , screws  /  4. large ferrous

I do not understand why there is an "iron gap" between 1.small ferrous  and  3. iron nails, screws.

Why no ferrous in this 2. AQ detection range?

There should be some ferrous of intermediate sizes between 1.small ferrous and 3.iron nails,. And no void as it is indicated in the chart. And at end I think that the AQ will accept some ferrous , just my opinion … 

thanks for your answer , Alain

Link to comment
Share on other sites


Hi Alain,

I went ahead and deleted the post and the chart. I put several disclaimers in the post that the chart was for conceptual purposes and was not intended to create an absolutely detailed, accurate, and definitive target response chart. I was assuming some degree of interpretation/interpolation by the viewer. Part of the problem is it is being taken out of the context of everything I have posted on the subject in the last ten days. I explained previously in this thread ahead of the chart that ferrous covers the entire range so I obviously agree with your conclusion since I have explained that exact thing so people would know it to be the case. I included both ends of the ferrous range in the chart and did actually include a portion of the bottle cap range that you must have missed. Long story short since the chart is being taken as definitive instead of conceptual despite the disclaimers, leaving it up is misleading or confusing people, and so deleting it it is probably for the best. I halfway knew when I posted it this was going to happen.

  • Like 3
Link to comment
Share on other sites

15 minutes ago, Steve Herschbach said:

I went ahead and deleted the post and the chart.

too late that my screen saver on my PC and the screen is huuuuuuuge :fisher:

 

RR

  • Haha 1
  • Oh my! 1
Link to comment
Share on other sites

Ok Steve but I think that your initial idea is good , such a detailed chart is very interesting because it is very simple to understand so I think that fisher labs should provide one in the AQ user manual , so that people know exactly what the AQ can do ( or not do ) . This will avoid a lot of misunderstandings and frustations . Also from what I read here the AQ is a new generation machine that works differently from the previous ones and everything must be very well explained. 

BTW unfortunately for me , it looks like the AQ is not adapted for moderated mineralization ground prospecting  ( I am a coin shooter, inland  ) , so I will have to wait the future Fisher RELIC machine , I hope it will come soon because the VLF machines do not evolve any more in terms of depth performance since several years and I need some extra depth    :-) ... 

Thanks for everything , Alain

 

  • Like 1
Link to comment
Share on other sites

I agree Alain about a chart, and I have a good start on one, but without actually having a detector it's only educated guesswork on my part based on what Alexandre and LE.JAG have posted so far. The one I posted was just a quick and dirty illustration. Hopefully they or Fisher will do something official before release, otherwise you can be sure people will eventually construct some at a later date.

I was hoping for one detector that would do both land and sea, something I liked about my ATX. To be honest I think Fisher will have a hard time making a detector more powerful than a GPX 4500 or GPX 5000 let alone a GPZ 7000, and few people who already own those are willing to give up any power, even if the detector is lighter and costs less. Minelab means gold prospecting to a lot of people so Fisher has a tough road ahead there, and they have let Minelab have lots of advance notice what to expect.... I doubt the engineers down under are asleep at the wheel. The AQ model however has only a couple detectors, the Garrett ATX and Beachhunter TDI, that are truly equivalent product. For me at least, having none of the three at the moment, the choice is pretty clear. I am fed up with 7 lb detectors that have $500 coils, and the Impulse, using the TDI as a starting point, simply has to be better, or Fisher has wasted a lot of time and money. I sent Dave Johnson a TDI (big box version) years ago and Carl worked at White's so they know what they need to beat to succeed.

fisher-impulse-aq-vs-garrett-atx-vs-whites-tdi.jpg
Fisher Impulse AQ vs Garrett ATX vs White's TDI Beachhunter

  • Like 4
Link to comment
Share on other sites

This discussion has been great, but just like the Equinox original threads, when you run out of new information, it gets a little repetitive. I'm hoping it will not be the same long wait that Minelab had. After reading everything about the machine, I am torn on, if it can do better than my GPX? If there are not enough deep rings available, than I would probably run it so it can pick up the widest range of targets (hopefully as high as silver too). I understand that I will be digging large and small iron, and also I understand that I will never get that small thin gold, (like chains and stamped charms) because of the locked salt setting. But I'm starting to worry that I will be digging a ton of deep pull tabs and very little gold. The deepest decent sized gold ring (14K) I have found with the GPX was around 12-14". A small woman's 10K ring was a wobbly reading at around 12" Can it do better than that, is what I am wondering now.

 

Link to comment
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 Luis
      We have been told on several occasions that it was impossible to export the Aqua limited outside of the United States and now on the official page of Fisher I find this publication.  How is this possible?
       
    • By tvr
      Was in Myrtle Beach for most of a week. Got the AQ well into the chop on this trip. I stayed in cuts between sand bars and the beach so the waves were not terrible and I was able to stay on my feet. Ran all metal all the time. It ran mostly quiet with ATS on 7, Sensitivity on 4, delay on 10. If I ran delay less than 10, each step lower got a good bit more noisy. ATS lower than 7 did not make for good hunting either. Still left lots of adjustment should I venture beyond the sand bar. Had the big coil on, did not take the 8 inch on this trip. The waves did make for an effort controlling the coil, but made it through without mishap. Did not go out detecting on Thursday when Elsa went through. Elsa seemed to mostly push some sand up on the beach in the area we were staying; that made the bottoms of the cuts softer than they were early in the week. That said, On Friday in a soft bottomed cut, had a fairly faint but repeatable signal that after four scoops became very loud and I got it on the fifth scoop. Nice little 2.3 gram 14K gold pendant.  


    • By cudamark
      Sorry, I can't seem to find my previous thread on this subject. To recap, my AQ wouldn't power up, so, it was sent in to Fisher for repair. They claimed that it was the battery. I had my doubts, as I had tried a second battery with the same results. Anyway, they claimed it was only the battery and sent it back to me with a new one. On a side note, I had just sent the electronics back to them, and kept all the rods, cuff, and charger to save on shipping costs. Well, it seems they want EVERYTHING sent back when they do a repair. That's a first for me. They even told me that you shouldn't remove the arm cuff at all! It's something that they have to do, and not something the customer is capable of as it might damage the cable inside the rod.  Good grief, what a design. Anyway, when I got it back, I noticed that the cable from the battery to the pod had been changed. Hmmm, I wonder if that was really the problem and not the battery. Otherwise, why change it? Oh, you think they might have sent a new and improved one? Think again. I didn't think they could make that design any worse, but, they managed. It's even longer that the original, and wimpier IMO. And what is the problem with using 90 degree connectors to reduce the risk of cable damage? Well, it works now, so, I guess I can't complain too much, in fact, the new battery is a lot better than the original. The last hunt, I got over 3 1/2 hours on it and still had a green light! That's definitely an improvement. Now, if I can just find something good that my other detectors couldn't find!
    • By PPP
      Hi guys!
      I watched the treasuretalk on youtube for couple of days ago and Myer's metal detecting confirmed he is going to bring in AQ final edition in the shop next month in july! just wanted to ask others if it is true and anybody heared anything about it,Thanks!
    • By tvr
      Walked down to the local watering hole; brackish water bay tributary, pretty well cleared out over the years but a bit trashy with bits of iron. Ran delay 7, sensitivity 7, threshold 4, volume 8, ATS 6.5, reject 6; mostly all metal but some tones and mute to check targets.
      Initial reaction is that it is a little easier to hear the edge modulation with the 8 inch than with the big coil. I walked away from several targets that were very pronounced double tones then had a more subtle edge that I told myself to walk away … but dig to verify. That was the little fish hook. The odd shaped washer, to the right of the fish hook, fooled me; it sounded pretty good in all metal and in tones. The rest of it is all non-ferrous. Some of the small targets fell through the scoop several times before I finally capture them and got them in the pouch. This set up finds fairly small targets well. Tones seem to be more pronounced to me with this coil than with the big coil with some similar settings, yet I think I still hear iron better in all metal than in tones ... maybe some setting tweeks would change that around but I'm pretty happy in all metal.
      I did have an interference issue. A boat about 100 feet from me fired up and the AQ talked and talked. Stepped through the frequencies and no help there. I was shallow enough the detector head was above water so I went deep where the detector electronics were well under water and, surprise to me, that did not help either. Dropping the sensitivity down to 2 made it usable. Once he lowered the boat lift, backed off and motored away I could turn the sensitivity back up and hunt with a very quiet AQ.
      Did have a great blue heron land on the beach and walk into the water. Got about 30 feet away from me so I stayed still and watched it turn its head looking for minnows, catch and eat them. After a few minutes it walked around the beach corner towards the boat lift then flew about 2 hundred yards down the water.
      A good afternoon in the water.

    • By Mikeguard01
      Didn't get out this past week since I was under the weather.
      Started out with the detector being really unstable. Water got into the coil connector. Blew the water out of the connector and tightened the back-shell and everything was good to go. I also have noticed when I'm in shallow water she's a little noisy and a lot of falsing (water way below the connector). She's pretty stable when completely covered. I do run my machine hot in all metal.
      One old beach I hunt always has sand piled in to the one side. No sand movement in this area other than more accumulation. For years I said there has to be targets just out of detection range. Well not for the AQ. I did find a few targets in this area. I had to work slow since these targets were pretty close to the depth limit and I was running hot. A few pieces of crusty Silver and a nice 10K ring dated 1946.
      HH
      Mike





×
×
  • Create New...