By Steve Herschbach
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
By Glenn in CO
Does anyone know any information on the new coil for the TDI SL and if the coil will be available separately?
TDI SL is now ... TDI Hi-Q
A new high performance coil design for added depth -
in two options
TAN Part Number: 800-0334-Hi-Q
By Steve Herschbach
I was charging stuff off my truck a few years ago, and at one point was not paying attention and had the heater turned on in the truck with while I had the key on but motor off. A panic situation developed when my truck was dead in an out of the way spot, but I got lucky and was able to round up a jump. Still, it spooked me and I have been taking a spare 12V battery with me in my truck on my trips by myself to remote places, especially when out of cell range.
Driving around with a spare wet battery is a pain for various reasons, so I have been eyeballing an alternative for over a year now. My preferred option was a bit expensive for my taste, but my recent sale of extra detectors and such left me with some funds, so I pulled the trigger.
NOCO Genius Boost Pro GB150 4000 Amp 12V Lithium Jump Starter
This baby is overkill I am sure, but I kept worrying about cheaper units. When dealing with emergency gear I am not sure cheaper is better! Anyway, this thing will jump start almost anything, can charge detectors, etc., has a built in flashlight and 12V meter, and only weighs 6 lb 3.3 oz or 282 grams on my postal scales. On one of my upcoming outings I will find out how many times I can charge my GPZ 7000 off of it and report back, but that may be awhile.
By Steve Herschbach
ATX, TDI, GPX. What is it with detector companies and three letter acronyms? I liked it more when they were called Coinmaster or Goldmaster. At least that gave you a clue about what the detector was supposed to do.
The three detectors representing the state of the art in ground balancing pulse induction (GBPI) metal detectors. The Garrett ATX, White's TDI, and Minelab GPX 5000. You rarely see them all pictured together so I thought I would post one.
Garrett ATX, White's TDI, Minelab GPX 5000
These three detectors are all very good at what they are basically made for, which is dealing with ground mineralization and hot rocks that make using VLF detectors very difficult. In particular VLF performance is severely impeded in extremely mineralized ground. In low mineral ground a good VLF prospecting detector running in all metal mode can deliver results rivaling PI detectors with the added benefit of having good discrimination options. Anybody doing much prospecting, however, will eventually run into locations where ground mineralization and hot rocks makes using a VLF such a challenge that a good ground balancing pulse induction detector is the only real option.
The GPX 5000 represents the current state of the art, and is the easy option if money is no object. It is well designed for long hours of prospecting, has an incredible variety of optional coils, and can handle most any ground conditions with many tuning options.
The Garrett ATX provides performance that comes close to the GPX at a much lower price, with the added benefit of being waterproof to ten feet. Actually, this is only a benefit if you need it. Otherwise it makes the detector heavier than need be and limits the available coil options. Still, if the GPX is not an option the ATX would be my next choice in a new detector with a warranty. For those needed waterproof it is the only real option along with its predecessor, the Garrett Infinium.
The White's TDI is an older design but still very capable. It costs less than the other two options, and unlike the Garrett it has light weight versions and models that can be hip or chest mounted. It is a good option to explore for those on a budget or needing the most ergonomic solution. The TDI is also a very respected beach detector, like the ATX above, but it has no waterproof option.
By Steve Herschbach
Something to watch out for. Extra desiccant pouches in the case my not be a bad idea, along with changing them regularly.