Tigar Shark or Sand Shark?

[Pulltab Parson]

Hey All,

For a water machine, what's the difference between the two Tesoro Water machines?

thanks for the info

HH
PTP

 

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[Terry Soloman]

The TIGER Shark - VLF single frequency, designed for FRESHwater use. Tesoro Metal Detectors - Official company web site with metal detector models for treasure hunting land or water.

The SAND Shark - Pulse Induction, designed for SALTwater use. Tesoro Metal Detectors - Official company web site with metal detector models for treasure hunting land or water.

 

[Pulltab Parson]

Thanks for the input Terry. So if one was to pick one machine to use for both salt and fresh water it would be the Sand shark, is that right. Or is the sand shark really only good for Salt water?

 

[Terry Soloman]

Thanks for the input Terry. So if one was to pick one machine to use for both salt and fresh water it would be the Sand shark, is that right. Or is the sand shark really only good for Salt water?

First, if you are going to be hunting both fresh- and salt-water equally, you may want to think about just getting a multi-frequency VLF machine like the Minelab Excalibur, or the Fisher CZ21. The Sand Shark (Pulse Induction) works everywhere and is deep - that is not the drawback. Pulse induction machines do not discriminate - you cannot notch out iron. The Tiger Shark will work in Saltwater, but it loses sensitivity and depth and is more unstable which means you'll miss targets the Sand Shark will hit easily.

Single frequency VLF machines (Very Low Frequency) like the Tiger Shark, have limitations in the harsh saltwater environment. Take for example the Tesoro Lobo Super Traq. This VLF single frequency machine (17.9Khz) is one of the finest and deepest gold nugget finders on the market today. The Lobo Super Traq, is capable of finding BB-sized gold nuggets eight-inches deep in heavily mineralized ground, or a nickel in dry beach sand at 14-inches. Put that same nugget – or even the nickel, seven-inches deep in wet saltwater sand and the Lobo could walk right over it while chattering, or maybe without seeing it at all. Why?

The magnetic iron sands (“Black Sands”), salt, and high concentrations of other minerals in the water and sand conspire to bounce the radio waves away from the target. Conductivity and mineralization act like a shield around the target and create white noise that must be filtered electronically. Think of it as turning on your bright headlights in a heavy fog at night. All that powerful light is diffused and causes a complete white out – you can’t see anything three-feet past the hood of your car! However when you turn on your yellow fog lights, you can see a little further – not as far as you could in clear daylight, but further. That is why all radio wave machines must be “ground balanced” or tuned, to maximize their depth potential, and why BBS filters and multi-frequencies are so effective – yet still limited.

Unlike BBS and VLF metal detectors, which constantly send and receive thousands of low frequency radio waves per second, a Pulse Induction (PI) metal detector fires high-voltage pulses into the sand several hundred times per second. If no metal is present the electric pulse decays at a uniform rate with no anomalies. When metal is present a small “eddy” current flows through it causing the voltage decay time to increase, which creates a measurable anomaly. Unlike VLF radio waves, electronic pulses are impervious to the effects of conductivity and mineralization, and are unaffected by salt or black sands.

PI metal detectors give the user superior depth capabilities in all metal detecting situations and soil conditions. Using the same heavy fog at night metaphor that I referred to earlier, pulse induction is like headlights that cut completely through the fog as if it were not there at all. The trade-off for that added depth and clarity is the inability to discriminate, or block out iron targets that you generally don’t want to waste time and energy digging.

 

[Pulltab Parson]

Thanks Terry, that's good to know. The most hunting I would be doing is fresh water, though, if I wanted to take a trip to the beach, I would want the capability to hunt. So I guess the Tigershark would be the way to go. It can hunt fresh water very well, and can be used in the salt, just not as effectively, is that right?

 

[Terry Soloman]

Thanks Terry, that's good to know. The most hunting I would be doing is fresh water, though, if I wanted to take a trip to the beach, I would want the capability to hunt. So I guess the Tigershark would be the way to go. It can hunt fresh water very well, and can be used in the salt, just not as effectively, is that right?

Correct! Just like the AT Pro, except the Tiger Shark is waterproof to 200' deep and the ATP only 10'.

 

[Sandman]

Plus you might never have to use the warranty on the Tiger Shark where as the AT Pro, the jury is still out on that one. I won't use mine anymore in the water.

 

[sierrakev]

Thanks for that outstanding explanation Terry.
Will I at least be able to "hear" the difference -iron vs silver with practice, on my Sand Shark?
On my Amigo I can, (even thought I tend to dig it all) can't wait to see what my SS turns up.

 

[Terry Soloman]

..Will I at least be able to "hear" the difference -iron vs silver with practice, on my Sand Shark?..

I seriously doubt it, but never say never!

 

[Sandman]

I seriously doubt it, but never say never!

The Sand Shark doesn't give you tones, but some claim to be able to tell silver from gold rings.