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HI! Just wondering if it is worth selling my garrett sea hunter and Equinox 600 to buy a TDI beachhunter instead? of couars the money i will make selling thoese two detectors is not enough to buy a TDI Beachhunter and i have to put som extra money on that.Please help! I want just more depth in saltwater and think TDIBeachhunter goes deeper than thoese two

I am curious what you guys think about the TDI SL. To start off - I KNOW it's not a GPZ! Price, weight, usability... it seems to have em covered as far as the under 1.5k pulse market goes. Maybe it's just under-marketed. Hope it's ok to ask here, I really appreciate what a resource this board has been for me in my first year at White's. I figure what better way to get an answer to a question than go straight to the folks who know best. So - let me know what you think about the ol' SL. Good. Bad. In-between. Open to suggestions.

Was here with the with the 7.5 and Hi-Q coils , it leaves tomorrow,, absolutely no comparison to the big box TDI ,, and the HI-Q isn’t any better at air tests than the 7.5 coil,, Whites says it’s for relics as well as gold (HI-Q) maybe gold,, not relics having pursued relics for the past 35 years this combo isn’t it ,, I’ll stick with the big box and the standard spider coil,,, or use my other pulse the M/L GPX5000 ,, and as someone else had written ,, we shouldn’t have to buy or make higher voltage batteries to gain depth ,, don’t get me wrong I love my Whites detectors owning1, Big Box TDI ,, 2 , 6000 xl 1, Blue&Gray, 1,MX Sport ,, and 1 Eagle in Brand New mint condition too pretty to use ,, this package is advertised as a gold and relic detector / that HI - Q isn’t for relics of much depth before it taps out

Just arrived in the mail, Nuggeteer 18 x 6 mono, mounts nicely on the Tdi pro using a Minelab lower rod. It is weighty at 1 kg but easily balances on the Tdi Pro, just don't have any metal in your shoes.. When the weather clears I'll go down to the beach and give it a good run. Useless air tests, test garden results and beach run results in the very near future.. karelian

I've had this coil for quite some time, but it was packed away and forgotten. It was purchased for A$60 because I was intrigued. It is the anti-interference version. Measures 12 x 4 and uses the MInelab lower rod. Weight is decent, build quality is good. Performance in the field still remains a mystery as I've yet to use it. I gave it a quick air test just to see how it behaved on the Tdi Pro. This version has a hot spot in the centre of the coil which appears very sensitive to small targets at shallow depth. Seems to hit fairly well at shallow depths but doesn't have much punch for the deeper targets. Test garden results on coins would give real world depth on coins between a solid hit around 15cm or 6 inches and fading fast past 20cm or 8 inches. Useless air test with ground balance off, gain at max, in ALL, frequency in the middle, pulse delay at 10. 1 grain was 7cm .5 gram gold coin 16cm 1/2 Sovereign 23cm Us Quarter 23cm Aussie Penny 25cm Whites Buckle 33cm So in summary it hits hard on small and shallow targets, the centre of the coil is a hot spot for sure.. Fades fast as depth increases, the big Whites buckle just managed 13 inches. Since I managed max gain on the Tdi Pro in an EMI hot zone, the Anti-interference feature seems to work ok.. One of the things I like about the Tdi machines is the ability to plug in all sorts of coils, never know if you don't have a go.. My Tdi SL is highly resistance to EMI and the Pro less so but still very good. This coil could make more sense mounted on a Minelab around electric fences and mobile phone towers.. etc. All the best, Karelian

Have a mine lab gpx 5000 and ordered a whites tdi sl for a backup unit a friend told me the gpx coils will work on the tdi?? But it’s not here yet to see if they will even plug in to the whites , so what’s the truth ??? Thanks

Which do you think will hit deeper on wet sand? I'd prefer a TDIBH over a DF but I'm budget limited.

Hello everyone, I have received many emails about the REG mods and responded to them. I finally spoke to Reg by phone and he is OK with me Posting the mods on this forum. He just wants me to send the info back to him to revise and make sure everything is OK. I am also glad he is still doing well. We also spoke about Whites and the situation at the company and how some of us are brand loyal and hope to see improvements. This way it will be easier as some times I delay email responses. Hope to post soon with Steve's permission of course. Gilbert

Whats the deal with ' hi-q'? What is that? Any different from regular tdi sl?

My cleaning regime after an ocean detecting session is meticulous but I got a little careless when I got home. i always rinse the unit really well at the beach showers and always look for signs of water ingress immediately afterwards and everything checked out fine. When I get home, everything is submerged in a long plastic tub full of warm fresh water where it soaks for about 15 minutes. I also add some mild liquid soap to help get all the salt out of every knock and cranny. I normally add the soap to the bottom of the tub and then blast the water in to get it mixed up......and THEN I place the detector in. Well today, I got careless and placed the detector into the bottom of the tub first and then for some unknown reason, proceeded to fill the tub with heavy water pressure.........yep........the force of the water got past the orange gasket and forced itself into the detector body. Luckily I noticed it straight away and no damage was done at all. I did have to disassemble the whole unit and dried it all out completely. Not too much water got in as you can see in the third photo. The biggest hassle is getting the gasket back on and securing the 8 screws evenly otherwise the gasket can bulge out in a few places. Lesson learnt........go easy with the water pressure when using the snap on hose connector. I’ve only made this mistake once and didn’t get away with it. Anyhow, now you all get to see a disassembled TDIBH. Interestingly, the battery compartment is completely separate from the electronics top half. As far as a waterproofness weakness.....it is the orange gasket but only from high dynamic water pressure. Tony

Something to watch out for. Extra desiccant pouches in the case my not be a bad idea, along with changing them regularly. http://www.treasurenet.com/forums/white-s/612770-tdi-beach-hunter-already-going-back-repairs.html

How good would the TDI SL work for sniffing out coins around old foundations that have a lot of iron but low to moderate aluminum? I have been looking at various coil and detector options out there for the vlfs whether a new machine or for the machines I have and have a feeling they aren't going do do anything significant performance wise. Trouble is some of the old coins I suspect are in the areas are near foundations and where land was disturbed when the buildings were constructed. Conditions have heavy brush so a smaller coil is needed to sniff around and tons of iron that mask out even my little concentric. Smaller coils aren't going to hit the depths I want to get to 12"+ on small silver. Aluminum that is there is fairly shallow and not a big deal. I dig all the ring tabs as they have the same signal and vdi as flying eagles here. Can's I can identify with my eardrums 🙂

All-new patented 8"×12″ Dual Field coil for improved depth and sensitivity. Bonus 7.5″ Dual Field concentric coil for a limited time! To hunt all day, you need a lightweight detector that still provides high performance. The TDI SL Metal Detector has pulse induction power that provides unbeatable depth and sensitivity and is designed specifically for prospecting and identifying relics. Special prospecting features make life easier, such full-control ground balance that filters out the iron mineralization of hot rocks, black sand, and other tough grounds. This compact detector weighs only 3.5 pounds with its waterproof 7.5" x 12” High-Q Search Coil, which offers deep detection depth. Other accessory coils are also available. The rechargeable NIMH battery lasts up to 6 hours, and a backup AA battery back will power all-day exploration. Owner's Manual (for TDI SL series, none specific to High-Q) White's TDI SL High-Q Camo metal detector White's TDI SL High Q Technical Specifications* Internet Price TDI SL High Q $1099 (available in both tan or camo colors) Technology Ground Balancing Pulse Induction (GBPI) Frequency 3250 - 3370 Pulses Per Second Autotune Mode(s) Slow Motion Ground Rejection Manual, one turn control Soil Adjust Ground Balance On or Off (two position switch) Discrimination Conductivity switch*, 10 - 25 Pulse Delay Volume Control No Threshold Control One turn control Tone Adjust No Audio Boost No Frequency Offset One turn control Pinpoint Mode No Audio Output Speaker, 1/4" headphone socket Hip Mount No Standard Coil(s) 7.5" x 12" High Q plus bonus 7.5" round Dual Field (Limited Time only) Optional Search Coils Over 100 accessory coils available by White's and others Battery Rechargeable NiMH & AA Operating Time Up to 6 hours Weight 3.5 pounds Additional Technology The TDI was designed specifically to be able to use Minelab SD/GP compatible coils. However, performance can vary and the pulse delay may have to be advanced to compensate for coil differences that result in overload readings. Notes *The TDI is unique in that it can suppress audio responses into two different classes. Targets have a high tone or low tone audio depending on how the target relates to the ground balance setting. In general high conductive targets give a low tone and low conductive targets a high tone. The TDI can be set to allow for one response or the other. See White's TDI Coin Settings for more details on this control. *Notes on Technical Specifications - Detailed notes about the specifications listed in this chart. White's TDI SL High-Q Tan metal detector White's 7.5" x 12" High-Q coil for TDI series White's 7.5" round Dual Field coil for TDI series

I’ve recently had a few emails regarding my TDIBH so I thought I’d hammer out a response. I’m going to try and summarise with some dot points; I have close to 500 hours on this machine and run the 14.8v (nominal voltage) Lithium battery pack. Details in my earlier posts. The detector has found me quite a lot of big and deep gold. I don’t use it much in the water as conditions down here are generally quite rough. The 12” coil is physically too big in waves and white water. Also, digging 18” targets when you are being swept around by waves and swell is almost impossible even with 30 pounds of lead. The detector is now mainly used on the lower beach and low tide areas. I have had no issues running the 14.8v pack. I charge overnight and let the voltage settle down before using the next day as this avoids the off the charger voltage of 16.8v. My run time is about 6 hours before I swap out for a fresh pack. I have had no condensation issues within the detector. I do have a large silica gel pack in the battery compartment. The detector is quieter than other PI’s with the low delays when used in the shallow water and saturated hard pan. The SAT is very good in keeping things quiet even at low delay settings. Maybe it is the new Flux Capacitor that White’s now use 😉 I have several layers of yellow Plasti Dip on my coil to keep it well protected on the coarse shells and exposed reef areas. My ultimate power setting is minimum Delay and maximum Gain, threshold a fraction below audible with volume up high. Frequency is usually at the 12 o’clock position. I have only ever needed to change this once. My deepest ever finds have come from this machine. GB is always OFF unless I hit a rare patch of black sands. You need a BIG and STURDY scoop..............Tony

Just bought a used TDI Sl from eBay. When the ground balance is off the machine is stable and smooth. The second I turn it on the machine goes crazy. I got a good deal on it. Do I send it back or do I send it in to Whites for repairs? Thoughts?

I was just wondering if anyone had used that coil? I have the SPP and I have the large DF plus others but inquiring mind wanted to know about it . At a price they asking it would be in my interest to ask here first. You may ask do I need it and that answer is no ! I’m like a kid in the candy store are a toy store. I Want ! Chuck

White's for the past couple years, I was told, has been working on an up graded battery pack for the TDI SL which will allow it to operate at to 14 volts or more. There is plenty of "home made" stuff out there that seems to work very well but I keep waiting for a factory product that should have been out by now. I'm just a breath away from buying a reputable model from a guy making /selling them on eBay. Has anyone heard anything concerning this matter from White's? They sure can make it tough to be a loyal customer.

River Detecting for Gold Nuggets - See who gets the Biggest Nugget. Gold Prospector's Jeff ( Smithsgold ) and Gary ( Two Toes ) Head to the Hills in search of rare Gold Nuggets. Watch and see who gets the most Gold and the Biggest Nugget. SG 010

So there is a used Whites TDI pulsescan detector in my area for sale for $675. It is not an SL so im guessing its an older version. Is there any benefits to owning this detector along with a GPX4800? The price seems good and its close by. Ive also thought i heard that the older TDI were more powerful. I also believe it can use most GPX coils correct? I dont really need it but it seems like a great price for a PI detector.

Is there anywhere on this site that has the research or post made from Reg Sniff pertaining to TDI depth in relation to battery voltage? I remember somewhere that stated the reason the original TDI had greater depth capabilities was the increased voltage of the batteries not necessarily the model number. It also had information in relations to voltage limits/performance issues. Just thought I'd ask.

I did both of Reg Sniff's suggested mods to my 2013 model TDI SL. I also use a 16v battery pack. I was testing it yesterday on pieces of nickel. I buried a 1 gram piece at 6", and a 1.84 gram piece at 10". The TDI saw both with the 7.5"DF coil, and the 8 x6 NF Sadie coil. The 12"DF coil could only see the 1 grammer....same for the Super Pulse 14" 350. The signal on the 1.84 grammer was faint, but repeatable. I'd definitely have dug it in the field. The signal on the 1 grammer was strong with both the Sadie, and the 7.5DF. Could have easily been deeper. Jim

Seriously....? https://www.metaldetector.com/whites-tdi-beachhunter-extreme-pulse-waterproof-metal-detector

Is it true that some Minelab coils will work on Whites TDI?

This mod has been done at the factory on all SL's made since 2015. So, only applies to earlier models (mine is 2013). It consists of removing the diodes D20, and D21, and capacitor C56. You also have to install a jumper across two of the three diode leads on D21. I'll post a pic showing what I did. The effects of this mod are much more subtle than the sweep speed mod. Maybe a 5-8% gain in sensitivity in the air test on the 1 grain gold bar. But, still some gain, though I had to be paying attention to hear it. This mod should not be undertaken unless you have some serious soldering skills. The components are REALLY tiny....like 1/8" wide, or maybe 3/16" at the very most. Getting the jumper in place is tough...took me 15 minutes of fooling around to get it soldered in. The mod pushed my air test distance on the 1 grainer to 3 1/4", without headphones. Might have done a bit better using the hp's. there is also a slight increase in ground noise to contend with, but nothing that really bothered me. In really ugly ground, it may be worse. We'll see. In the pic, the red triangles are where the diodes were. On D21, you can see the jumper under the lowest leg of the triangle. That jumper is 3/16" long. The straight red line, on the right, is where C56 was located.

Hi folks, so I've ordered myself a TDI SL and spent a few hrs on line trying to find anyone that ships the RnB innovations 14.4v battery to Australia which proved to be an impossible task. So I went on to try and find the highest capacity longest lasting AA batteries for the dry pack and came across the Kentli 1.5v 3000mWh rechargable lithium polimer batteries. I have to say it looks like a brilliant idea but some of the reviews I seen aren't all that great. Now being aware that a lot of reviews are probably BS of one kind or another I have to ask who here has heard of or tried these? The idea of getting a constant 12v in the machine is appealing. Would be good to see some of you electrical gurus out there put them to the test?