Using a metal detector on a beach for treasure?

[SADS 669]

Congrats on the Tesoro, but I believe the Tiger Shark is designed for fresh h2o and the Sand Shark is the salt h2o model. What h2o beach are you headed for?

As a beginner I need something that works on sand then will go underwater off the beach and if Aquanut uses a tiger shark I felt that would work for me too 😊 I am hoping to find evidence of wreckage on a beach and then go out into the ocean looking for where the wreckage field began. There are no places here where people have sunbathed etc in any numbers so I felt this would be the best option to start me off. I hope to find an excuse to work an area underwater as that is my passion. Basically I bought it to give me another reason to dive LOL I am under the impression that a VLF unit is better for finding a wide range of ALL METALS
Thanks so much for the support
Kevin

 

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[TerryC]

Underwater or wet salt sand, the PI unit is king! Freshwater or dry sand, a VLF will do. TTC

 

[SADS 669]

Underwater or wet salt sand, the PI unit is king! Freshwater or dry sand, a VLF will do. TTC

Hey Terry
what is the down side of a VLF at the beach and underwater in salt water
Thanks for the reply

 

[TerryC]

The downside is simply.... the VLF cannot handle the amounts of minerals in saltwater. They can... to a point.... but the PI (pulse induction) machine operates with no concern for the minerals what-so-ever. I know this is not a very technical explanation but I have been working salt beaches with my Impulse 8 for more than 20 years and it is still going strong! Just ONE slight drawback to the pi machine underwater... if you are working medium to shallow water, the tone changes as the waves roll past. A MINOR drawback. A Google search or check-in with "Dave" (Woof) may get a more technical answer. Hope I have been of some help. TTC

 

[TerryC]

Hey Terry
what is the down side of a VLF at the beach and underwater in salt water
Thanks for the reply

Incidently, thank you for your military service, whichever country you served under! TTC

 

[TerryC]

One more thing, SADS. Whatever unit you decide on, you need to add weight to the machine AND physically attach it to your body so it does not float to the surface while you are hunting "at depth". TTC

 

[SADS 669]

The downside is simply.... the VLF cannot handle the amounts of minerals in saltwater. They can... to a point.... but the PI (pulse induction) machine operates with no concern for the minerals what-so-ever. I know this is not a very technical explanation but I have been working salt beaches with my Impulse 8 for more than 20 years and it is still going strong! Just ONE slight drawback to the pi machine underwater... if you are working medium to shallow water, the tone changes as the waves roll past. A MINOR drawback. A Google search or check-in with "Dave" (Woof) may get a more technical answer. Hope I have been of some help. TTC

Hey Terry,

Thanks or the info, does the salt knob on MD 's like the Tesoro brands help with the mineral problems much?

 

[TerryC]

Hey Terry,

Thanks or the info, does the salt knob on MD 's like the Tesoro brands help with the mineral problems much?

Unable to answer that, 669 as my only experience with PI machines is owning an Impulse 8 and a Garrett infinium. Sorry. TTC

 

[SADS 669]

sent you a PM with link to articles I wrote - some may be of help to you

Casper, this the anchor I was telling you about in the PM

 

[SADS 669]

<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=830014"/>

Casper, this the anchor I was telling you about in the PM

The chain heading towards the deep water, it must of been under unbelievable tension to snake this much over 150 ft

 

[Frankn]

To straighten things out, The PI type of detector is unaffected by salt, black magnetic sand and minerals in the ground, sand and water. It is king of the beach. I have a Whites surfmaster PI that I use on the beach. I have found rings at 10"+ and anchors at 3' in sand, but I must admit that the J W Fisher Pulse 8X is about the best PI I have seen. PI detectors are devoid of bells and whistles. Most are turn on and go. Frank...

 

[Jason in Enid]

but I must admit that the J W Fisher Pulse 8X is about the best PI I have seen. PI detectors are devoid of bells and whistles. Most are turn on and go. Frank...

That statement is VERY dependent on WHAT you are looking for. Just like the differences between different VLF frequencies create better response to different metal... PIs have a range of pulse duration, pulse frequency, and sampling timing. The JW Fishers are great if you are looking for large, deep items. They are NOT as good for small gold you search for on a beach.

 

[TerryC]

I have found my Impulse 8 (out of print) up to the task at finding rings 'n things down to 7 or 8 inches on average size jewelry.... deeper on "horse chocker" pieces. TTC

 

[Frankn]

That statement is VERY dependent on WHAT you are looking for. Just like the differences between different VLF frequencies create better response to different metal... PIs have a range of pulse duration, pulse frequency, and sampling timing. The JW Fishers are great if you are looking for large, deep items. They are NOT as good for small gold you search for on a beach.

Actually, My PI has a pulse delay.
A VLF detector constantly transmits and receives. The sensitivity of different metals to different frequencies is much overplayed.
A PI detector transmits, then receives, then transmits---etc. The delay is the space between transmit and receive. This is more or less a depth setting.
Frank...

 

[TerryC]

View attachment 828984

Here's an inexpensive book that has some good information.

Erosion is the key with beach hunting, look for places where the sand has been eaten away.

Good luck.

HINT: If hunting VA or NC beaches, go in the middle of winter. The sand "goes out" during the winter... putting you about 14 feet or so DEEPER! Hopefully, on the coral or bedrock. I found 4 rings one day near Duck/Corolla NC. I posted the finds here on TNet years ago.... under the old website format. TTC

 

[SADS 669]

HINT: If hunting VA or NC beaches, go in the middle of winter. The sand "goes out" during the winter... putting you about 14 feet or so DEEPER! Hopefully, on the coral or bedrock. I found 4 rings one day near Duck/Corolla NC. I posted the finds here on TNet years ago.... under the old website format. TTC

Thanks Terry,
noted and I am already looking at the worn away bits on the beach where the little cliffs are.. Once the MD arrives, off I go, I will post the first thing I find.