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Finally I was able to get to a beach after their season ended. I used the AQ in all metal and mute modes. I could not use the tone mode since I was way too close to the Acela high speed train. Most of the trains that run that rail don't affect my pulse machines too much, but when the Acela hits the rails, it's a no go for any machine. The AQ handled it a bit better than my GPX does. But you still have to hear the interference and at times you just can't hunt. I hunted for 5 1/2 hours with the AQ (2 3/4 hrs per each battery). The low tide was exceptionally "high" at +0.9. This did not allow me to get much wet sand, so most of the hunt is in dry sand and any wet sand I could find. This is just the first part of the hunt involving the AQ. I hunted another 3 1/2 hours with the GPX not shown here. I have a lot to learn, so I am digging every target. I am getting better at knowing hair pins, as I could call most of them before I dug them. Bottle caps are a different story, as the only idea they might be bottle caps was the extremely strong and wider signal. But I think a gold ring a 2" would sound the same? I should be able to get out again soon and hit a very good low tide, so I will have better information on how I do in the iron and wet sand. I did manage to get a small silver ring, some bling jewelry and a lot of exercise! Settings were Carolina's settings. Thanks man! I ran at 7.5us most of the time. I still like how the AQ responds and feels generally. Only real drawback is swapping out a battery making sure no sand gets into the connections. For those that have way more experience on the AQ than I do, have you found the depth on dry sand to be equal or less than wet sand?

Small gold ring from Last Friday using the AQ....Got 2 more gold Saturday but they were at a different beach and the excalibur. I'll post them later this week. Hit a bump in the road Sunday night, had to take a family member to the hospital ..she was in for few days and came home today... Thank God..all went very well. I was out twice last week with the shorty battery and it is now packed up and ready to go a few rounds with my friend Carolina...Give him a week with it and see what he has to say...I want his confirmation on the run time of 5 hours and 30 minutes and see if I need to make any adjustments...before I sell a few. Got rid of the m-8 headphone fitting and the battery is fitted with a M-12 8 pin CTX head phone fitting..(Very Common) and replaced the M-8 4 pin on the battery with a 90 degree molded cable that goes right to the end of the white shaft 4 pin power/headphone plug...So we got it down to One M-8 fitting..which the 90 degree is a Bulgin molded SS fitting..so it does not stick out like the stock...

I was wondering if there any more AQ being made i put my name on a list and was wondering where they are in production last I herd they where at 8 i think i hope they produce the machine for the people on there list and take care of them

Last four spins with AQ. Mostly tone mode since I am looking for recent drops. All knee to ankle deep. Volume 8, sensitivity 5, ATS 8.5, reject 4. delay 9. A few targets in all metal were same settings except ATS was 6. Cant stop the bobbie pins. No double ping. Chains are junk. Some junk rings but most gold. Class ring has no name. Good luck everybody. On a side note, I can’t thank Rick and Eva enough for all their help. Top of the line crew they are! I should add, all the coins come in as a iron grunt. I like the anticipation of a 18k 15 gram coming up in my scoop!!! There is very little iron where I am hunting and size and shape tell a lot.

https://www.facebook.com/groups/Fisher.IMPULSE.AQ.Metal.detector Extracted and translated from there: What to plan for before buying the future Impulse AQ from Fisher: an appointment with his banker.(In the process a small gift for Madam, to pass the pill) a subscription to the gym, because if you are not used to digging holes of 40 cm or more, it will be useful. (Not to mention the filling, just as physical sometimes) to be done in good conditions, a suitable digging tool, sifting shovel, sand scoop, call it what you want, it must be part of the adventure. (Stain Steel preferred) be well shod, the afternoons will be long, hard to stop when it bites. an XXL garbage bag, because there will be some (PI obliges), and it would not be correct to leave them there, but you already know that, don't you. perhaps the most important, patience, hours of observation in search of a good spot, to come and go on the sand, but not only, between the rocks, under the pebbles. .. Yes, it won't be looking for you, it will find it, but only if you are in the right place. a good front light, a car charger, something to warm up, and room in the trunk for you and your detection buddies. And yes, all of this is to add to your wildest golden dreams, good night everyone. Didier.

***Please note that the videos are maybe not completely upload*** This is to demonstrate the normal behaviour of the AQ when its coil is swinging under sea water. Note that the average salinity of sea water around the world (with a few higher or lower exceptions) is between 34 to 36 ppt Ref: https://en.wikipedia.org/wiki/List_of_bodies_of_water_by_salinity Here the IMPULSE AQ LIMITED IN SURF PART 1 --> 7us pulse delay SALINITY 36 grs per liter (PSU) This is the link to a video taken during such tests. There was no reaction of the AQ while balancing the coil under the water (50cm deep) There was a fast recalibration made by the system at coil entering and leaving the water surface The test have been conducted in the surf of a beach facing the English Channel as a confimation , (Average Salinity = 34-36 ppt) This is the link to a video taken during such tests. Here the IMPULSE AQ LIMITED IN SURF PART 2 --> 8us & 9µs pulse delay SALINITY 36 grs per liter (PSU) Here bad and good swing difference with 1 inch variation

There are lots of notes on this thread about changes that are being made in the next version of the Impulse AQ. Key items: Battery system replaced entirely with four drop in 18650 rechargeable Li-Ion batteries Depth rating to be increased Lower rod made longer to accommodate taller users Headphone connection being relocated to back of pod An 8” accessory coil is in the works Refer to the thread above for details.

You hear all the ime from different sources that Minelab is releasing a PI beach machine next year.If that is true then it is best for Fisher to release the AQ as soon as possible before Minelab.With the popularity and high quality machines Minelab introduces,it's become then another step back for Fisher selling AQ.What do you think guys?

According to the Fisher Impulse AQ facebook site,there is 99% done with the machine.After some reports from AQ limited owners,you see peoblem with battery,cable connectors,noisy coil in the salt water,high temp on the control box,short shaft,,,,,,,,,,and I assume these all problems sums up the remaining of 1% left??how can it be? Has anyone any guess when the final unit is available to buy worldwide?

Before I stuck gold. Today was the day I was finally able to get out after getting the AQ back from FT. This was my fourth time getting out and a total of 12hrs before I could get the monkey off my back. It was an early morning low tide hunt but well worth it. I hunted all metal for a while and then tones. I was going from the wet till about knee deep. The AQ was noisy (during each swing) in both settings, running 7-8uS. Even adjusting ATS, swing speed and keeping the coil leveled didn’t help much. I ran sensitivity from 4-6 trying to keep it quiet. I hope to get out again tomorrow to a different beach and see how it performs. I got two silver rings, one junk and an unmarked small gold ring with real diamond chips. Good luck out there and happy hunting.

I have been following this machine for a couple of years now and seem to be getting some good information on the "Limited" machines from the current owners, however some of the information is somewhat vague. Joe Beachnut has given good info and videos of his hunting and I'm grateful for those videos, however he is in the bay. I have seen one owner's post that has had problems with stability with the machine in saltwater. There was also one reply saying there were two machines elsewhere with the same stability issues in the water. So, how many users/owners are using the AQ in the saltwater and have stability issues OR is this an issue with only those few machines? Is it a salinity problem? I know this machine will be great on the wet sand but in the summer, I'm in the water nearly 100% due to the heat....I need a machine I can use in the water! Cliff

Dug every signal no matter if I thought it was good or bad. Tone mode. Quarter's grunt, dimes a mid tone, pennies mid tone, nickels high tone, hair pins high tone and some double tone. Sparkler high tone, clippers high wide tone, piece steel? high tone, double tone, brass screw high tone, medallion high tone. Two targets to deep in the wash to retrieve. His words, It's going to be awhile before I set this one down. "I think" we have another AQ Lover...😍

Posting for a "AQ" owner who would like to remain anonymous for now. Hunts on the East coast of the USA. Saltwater.......First time out with his new machine. Got a 14k today. Ran smooth except in front of one area that has a lot of emi. Keep the coil under water there not bad at all. I could run 7 u's no problem but preferred 9. Battery lasted 3 hrs 5 mins. All metal and Tones mods used.7 nickels 8 pennies 2 ear rings 1 Bobbie pin 1 swivel 1 paper clip 1/2 spoon some brass 1 14k 1 tiny tiny brass piece of fish hook 7 u's two full scoops deep so I say 10 to 12 inches. 3 caps fooled me. I can't answer questions on this hunt but just goes to show his experience with the beach's he hunts and with a Pi shows.

Same here! I was pleasantly surprised to see this thread, Jim Pugh's thread and Clive's first gold thread and wondering why I had not seen them before.

Does not like heavy surf must be calm or your in for a long ride Images Happy Trails jimpugh

Figuratively speaking that is. Gold for sure, but, if I had actually struck it, it would probably split in two. Only 1.6 grams of 14K, but, I'll take it. Still not in love with this machine. Pin pointing is still vague, bottle caps sound great and seem like they're the size of a hubcap, and hairpins are driving me crazy! I just can't coax a double blip out of them, and can only get a reject tone with a max setting. I'm actually having a much easier time finding coins with it. The most disappointing thing so far is the lack of deep good targets. The main reason I got it was to find deep gold in difficult ground. I've been digging all targets and have yet to find anything good that my other machines wouldn't have found. This mornings gold ring is an example. In the 6-8" range, any of my other machines would have found it. Since I'm digging any repeatable target, I would have thought that I would have found some deep coins too. Nope, not a one. Nothing over a foot deep except iron targets that I just as soon not find. Oh, and this last hunt only lasted about 2 hours and 15 minutes before the battery died. Pitiful...... It had been a few days since it had been fully charged. Maybe I should have topped it off? Hard to believe it would lose that much life just sitting for a few days. If I don't start to click with this thing soon, it's going to be a closet queen, or E-bay fodder!

I am curious as what response it would give a different depths and if the chain is laid out straight.

Hoping I got on the list for an AQ Limited as I inquired with Rick. If not I can wait for the final production. Perhaps some of you PI guys can chime in. Obviously the Impulse depths on gold rings is fantastic and like many here can envision the potential. I do not know how the FCC regulates detectors, but was wondering about the early Whites TDI Pro. I'm told by someone very knowledgeable the TDI Pro hits gold rings 20 inches easy. Whatever the depth it's impressive. I do not know why Whites stopped TDI Pro production- perhaps design Rights? Then Whites produced the SL and later the TDI BeachHunter, neither of which have the power of the TDI Pro. My friend says not even close. I currently have a TDI BH. So why did the raw power of the TDI Pro go away? Did FCC regulation require watering down? Or again to do with design Rights? I'm asking because does the AQ Limited being so powerful meet FCC regulations? Might actual production units be a bit less powerful? I suppose not, but perhaps I should cross my fingers I make the Limited list? There was a time I wanted a TDI Pro for deep gold rings and couldn't get one and ended up with the less powerful/still fun TDI BH.

Click or double click any photos in this article for high resolution versions. I bought this 4 x 26650 battery holder on eBay after quite a bit of Google work. They are a surprisingly rare item. It comes with sleeves that can use 4 x 18650 batteries also. It ran me $29.65 delivered including shipping and tax. I ordered it on June 25th and it arrived from China on July 14th. The holder delivers 16.8V via a DC adapter plug or 5V via a USB outlet. It has a thin oring on the lid for an IP67 seal. I also ordered an IP67 M8 4 pole 16.4 foot female to pigtail cable from Automation Direct for $10.50 plus shipping and tax. I ordered several different cables so lets add $5.00 for s&h for this one cable. They delivered next day! And finally 4ea EBL 26650 batteries from Walmart for $20.99 free shipping, delivered in a few days. Total parts cost about $70. I have a 26650 charger already that came with my Tarsacci so you'd have to figure that. Some sets of the batteries come with a charger. By the way, the EBL seem in short supply lately. I shortened the power cable to 5 feet, more than enough to set the detector on ground if need be. The DC adapter that comes with this battery box is great. Blue wire to negative post and brown wire to positive. Warning - I am not vouching for the polarity. I used a multimeter to check my AQ battery and matched that. You should do the same. I take no responsibility for anyone doing this mod and blowing their AQ! The black and white are headphone wires. I hooked up a 1/4" female jack to those. I am using the AQ mostly as a wader unit employing some true chest high waders that have a big pocket on the inside front. I'll drop this battery in that pocket and plug my Sun Ray Pro Gold headphones in. I could use my TaoTronics to go wireless, but that seems pointless the way the battery is mounted near my head. I need to determine run time with four 26650 batteries - should be way better than the current 3 (all metal) to 3.5 (tones/mute) hours running time I get with the Fisher battery. Enough that I probably will not need to do a battery change at all and perhaps enough for a long day. I also need to determine how the detector handles without a battery under the elbow. Lighter of course, but too nose heavy? Should be fine in the water as the coil is neutral. Maybe too nose heavy for some people for dry beach use. We will see. This would be a great belt hip mount battery for dry beach use. I suppose it could also be mounted under the elbow, perhaps with the included strap, so I'll consider that also. It would balance well like that. It is IP67 rated and with proper headphone / power cables might be good enough to use under arm for wading / shallow dunking use at least. Operating sequence. Power up battery pack (it has its own power switch) then power up detector. Power off detector, power off battery pack. Doing otherwise may trip the circuit protector on the battery pack, necessitating removing and reinstalling the lid to reset. The pack has its own built in battery level indicator. And it may be used to charge a phone or other USB device! I was warned this USB capability might create interference in the AQ, but that has not proved to be an issue so far. The two circuits, 16.8V and 5V, appear to be isolated. Powered up - and no smoke! I really like this. Very easy for a not super skilled person like me to do, less than third the cost of a spare AQ battery, and should get well over twice the run time. If I had another complete set of batteries ready, it would be an easy swap for even more running time. It leaves only one cable to the rear end of the detector, and that is my only concern at all - I will try and beef that up and protect it better. I'm thinking a rubber boot that clamps completely over the end of the detector rod. I ordered a couple like like the one pictured below to see if it will stretch enough to work. Long story short is there is a very good chance this will replace my Fisher batteries for most of my use. This is why I had no problem getting the Limited "wader version" of the AQ as I find chest waders to be a good option at Tahoe and it's cold water for all but a couple months of the season when the water gets reasonably warm for mask and snorkel work. I used to do a lot of ice diving with drysuits while gold dredging, but am not looking to get quite that serious any more. Joe’s Fully Waterproof 26650 Alternative Description: Features: 100% brand new and high quality. Without 18650 battery. You need to prepare 4x 18650 or 26650 batteries yourself to use. DC 5.5x2.1mm interface has input and output functions, with DC adapter, easy to use. DC 5.5x2.1mm port for 16.8V devices USB 5V Port for Charging Smart phone GPS Tablet PC or 5V LED Light and more. Improve replacement battery pack fixes inconvenient shortcomings, greatly facilitates the users of the battery pack DIY requirements, without spot welding battery, thereby greatly reducing the battery internal resistance, improve the battery discharge performance, so as to effectively improve battery life Power supply: you can use 18650 rechargeable lithium battery as a power source The output side: USB and DC dual output power supply function,DC output voltage is 16.8V(can power the 16.8V device, such as the bike light), USB output voltage is 5V(can power the cellphone and other 5V device), to meet a wider usage scenarios, the product comes with overcharge and over discharge protection, protection of the battery is more safe and sustainable Specification: Material: Plastic+metal Color: Black or Red Input Voltage:DC 16.8V Output Voltage: DC Port 16.8V Standby current Under 80μA USB Output Voltage: DC 5V USB Output Current: 2000mA Overcharge Protection Voltage: 16.8V Over Dischage Protection Voltage: 10V Over Current Protection Voltage: 7.2A Size: 9x6.5 x 6.5cm Cable length: 29cm 18650 and 26650 Batteries are not Included Note Please put in battery in a right way. Charge it when power indicator light flashes. Don't use the device in the water. Waterproof standard is IP67 Packing list: 1x Waterproof 4x 18650 /26650 battery box case.(without battery ) 1x 5.5x2.1mm adapter 4x 18650 to 26650 battery converter

New Fisher Impulse AQ pulse induction metal detector Ive listened to a lot of hunters scoff at the simple basic skills I promote in my books. However as these machines become more powerful—with more telling audio and more heavily processed signal—the more important these basics become. The Fisher Impulse AQ is a good example of this. The only way to describe this detector is to say that it’s “a beast” very deep and powerful—on a par with any not-gold -specific pulse out there (SD / GPX/Z Series). I also own a waterproof TDI Pro and the AQ’s performance characteristics resembles this machine quite closely. For one thing with each—as you turn them up—it’s harder to hear any detail in the response. The lower Sensitivity settings go almost as deep but let you hear the weak responses of junk or the elongated tone of a hairpin better. The “maxed out” settings can come later. As well, with both, when a target has some steel in it as do many bottlecaps, this shows up at the ends of the tone. This is especially true of the Impulse AQ in “Tone” mode. A good way to demo this is to get a clean non- ferrous signal then move your scoop in closer to hear the tone change. This sound is one of your primary weapons in trash. As well—the simple basic of listening for a narrow peaked tone will help you to zero in on the non-ferrous targets. With any detector—a peaked sound means something that’s distinct from the ground. There’s a lot to becoming accurate with a pulse and it takes time. What helps is to have a “language” of signal characteristics to pair with your digs: -wide / narrow. -overall size. -consistency on the cross-sweep. -peaked / drawn out. -single or double tone. -how does it respond when you raise the coil? (Faint or dropping out altogether)? -overall correlation (size / strength / depth make sense). -smooth or sharp tone ends. -signal tone itself as relates to an optimized pulse such as the Anchor Electronics Barracuda or the Pulsepower Developments Aquasearch. (With this type of a PI--the "cleanest" sound you hear will be gold). These are some of the target characteristics that--if you pay attention to them will make you a more accurate pulse hunter. I’ve been hesitant to get out with the Impulse AQ because the sites near me are so full of trash. The hunt I did today in this type of conditions showed me that it is possible to use a pulse in dense trash but to dig random targets is a recipe for frustration. When you begin to use the above basics it’s possible to become more accurate—just as you can using a VLF in All Metal mode. I also found the Impulse AQ’s iron rejection modes to be interesting and effective tools although I’ve a lot to learn about how to best use them. From observing Alexandre’s tuning video the sense I get is that setting the AQ is about working with combinations of Sensitivity, ATS (re-tuning speed) and Rejection. The amount of Delay used also plays a role here too in that longer Delay settings will reduce the machine’s response to weak targets such as foils and hairpins. What I’ve seen so far makes me think of a comment of Eric Foster’s in describing the effects of the Aquasearch’s adjustments (Delay, SAT and Threshold) as being “nonlinear.” I think this will be an important part of understanding the Impulse AQ. I also noticed that the adjustments Alexandre made were small but produced dramatic changes. This points to a detector with a lot of fidelity--a versatile machine. With the TDI Pro, the challenge for me has been learning to turn it down enough to have a stable threshold in fast salt and stay off the “micro conductors”--but to still get more performance than say--a Dual Field. This was important in that the Dual Field is more stable in fast salt--so why have an erratic machine with the same usable performance range? What I found was that the TDI needed to be run up at 12 uSc—same as the Dual Field. While I’ve yet to run the AQ in salt—the overall performance in fresh water and black sand seems to indicate that it will be more stable than the TDI Pro. This would be a huge gain in and of itself--TDI Pro depth—with more stability at the lower Delay ranges. Can’t wait! cjc

My Impulse came with a very detailed calibration certification test list, along with a little nail in a capsule, which I assume was part of the test. A couple key figures jump out for people to know: US Nickel Depth min. = 16 inches (air test) Gold Ring 18K, 2.7 grs, size 8, Depth min. = 17 inches (air test) Compare to these QED and GPX 5000 figures here Note that the AQ has a 12.5" coil and these detectors are using 8" mono coils. I thought it was interesting the first circuit board test was on 3/13/2020 and final headphone test on 6/4/2020. No wonder these things are slow in getting out the door! click or double-click for larger version Fisher Impulse AQ Calibration & Compliance Certification In-Process Circuit Measurement 1. Interval Terminal Pull Test @ 2.2 lbs./inch per Q4071 2. Interval Connector Pull Test @ 1.1 lbs./Inch per Q4071 3. 20x Inspection per IPC-A-610-G 4. Dino-Cite Edge Optical to 220x per IPC-A-610-G V Final Circuit Measurements 1. Target Sensitivity Level 2. Threshold Adjustment 3. US Nickel Depth min. = 15.5 inches (in factory) 4. Gold Ring Depth min. = 16.5 inches (in factory) 5. Tone-Mode Test 6. Mute-Mode Test 7. Volcanic Sand-Mode Test Coil Measurements 1. 1st In-process Self Resonant Freq. 2. 2nd In-process Self Resonant Freq. 3. Complete Assembly Self Resonant Freq. 4. Coil Function Test Detector Level Measurements 1. Submersion Test: Coil Connector 2. Submersion Test: Power Cable to Battery Connector 3. Submersion Test: Power Cable to Detector Connector 4. Submersion Test: Headphone Connector 5. Submersion Test: Detector (1 meter, 4 hours) 6. Submersion Test: Headphone (1 meter, 4 hours) 7. US Nickel Depth min. = 16 inches (air test) 8. Gold Ring 18K, 2.7 grs, size 8, Depth min. = 17 inches (air test) 9. Power Cable Function Test 10. Headphone Function Test

A reference collection of threads about the Fisher Impulse AQ, grouped into rough categories. Fisher Impulse AQ Limited Launch & Buyers Disclosure Fisher Impulse AQ Ltd Owner's Manual Official Impulse AQ Limited Color Flyer Official Facebook & Website Links Fisher Impulse AQ Ltd Data & Reviews Fisher Impulse AQ Data & Reviews Fisher Impulse Gold Data & Reviews Genuine Fisher AQ Ltd Spare Battery Part Number & Price Fisher Impulse AQ Rod Length Measurements Impulse AQ Rod Extension False Signals From Coil Connector Fisher Impulse AQ Discrimination Explanation Impulse AQ Audio Responses Impulse Tones & Discrimination Notes Impulse AQ and "No Holes" Impulse AQ and Mineralization Fisher Impulse Small Gold Sensitivity Impulse AQ First Field Report Homemade Batteries For Impulse AQ More On Homemade Batteries Homemade Headphone Dongle / Add Wireless How To Relax The Headphone Cable Fisher Impulse AQ - The Next Version Quick Link To ALL Impulse Threads - Latest User Reviews and Reports Fisher Impulse AQ Calibration Information

This was my 3rd and last hunt. I went out for a low tide hunt and I was the only one at the beach. I think it’s mostly because people are going at night and leaving when the sun goes up. Things were looking good, I was pulling the correct targets that should lead to some gold. Within 1.5 hrs I had pulled the 5 rings and ear ring. I continued hunting but the next half hour I wasn’t getting any targets anymore so I decided to throw a nickel on the ground. I was running all metal and max sensitivity. I ran the coil about an inch from the nickel and I could hear it but not that strong. I decided to start raising the coil and kept swinging until I couldn’t hear it anymore. At about 8-9 inches I couldn’t hear the nickel anymore. The battery was still good but I decided to try my backup that was fully charged. I got the same results on the wet and dry with the fully charged battery. I have no idea what happened with the AQ after only 3 hunts but I did noticed the back of the control pod was rather warm. I don’t know if it was warm because this is a high powered detector or some other reason. P I shot an email to Rick which he forwarded to Fisher and I got a call back within two hours. I spoke to Felix and he sent me a shipping label so the detector is heading back to FT. I am bummed that this happened specially when I was on a roll but sh*t happens. I hope they are able to figured out what happened quickly so that I can get back to swinging and learning it some more. Good luck out there, HH. The 3 rings and ear ring are silver. The other two rings, one is tungsten and the other is junk. When I was about to dig the junk ring in my head I was like this is a big ring, pulled it out and I’m like 🤯 The pictures show all the targets I dug this hunt.

Joe, are you using a bms module inside the 4s1p tube?I hope not because.... I actually don't know if I'm correct but seems to be the easier combination for a self balanced recharge without the need of multiple solder and little cables around cells, not to mention the module itself presence inside the pod... I'm developing a similar pack for the Tdi and can be the base for the future of my dreamed AQ...

Above being said.................. the one problem I have with the "AQ" it's audio blasts when I move the detector to the side to dig and there is another shallow target under/near the coil........ I mean it is loud, and since I use the head phones I make (skullies) which the DB rating (sound level) is 15 plus over anything out there..............I get blasted if the "AQ" comes near the scoop, moving it a side to dig.... hitting another target..Or the AQ going back into the water......Not complaining, just one of my things that I've not seen anyone else talk of.... that I can fix..while I am making a battery for it. IP68, Bulgin On/Off...