7,5 or 18.75 KHZ 9" X-TERRA CONCENTRIC for beachhunting?

[Michlar]

Hello,
I'm from Denmark - sorry for my bad english

I normally detect for coins and relics on/in heavy soils. But now I have been on a couple of beachhunts (saltwater-beaches) with my detector....and it is very interesting. But It has only been on dry sand, because my coils are not waterproof. I own a X-terrra 705 with two coils ..... the 7,5 and the 18,75 kHz Double D 10" coils.............. I would like to buy the 7,5 or 18.75 KHZ MINELAB 9" ROUND X-TERRA CONCENTRIC COIL for beachhunting, because they are waterproof up till 1 meter. But I'm very much in doubt which one will be the best on wet saltwater sand......in the surf....and on shallow waters (I hope that you understand me )
Which concentric coil should I go for ??
Regards
Michael Larsen, Denmark

[Verulamium]

I thought the X-Terra DD coils were waterproof? I used to use a 10.5" 7.5 khz DD on my X-Terra 70 in water often without any problems.....

Cheers
Alex

[sparky1279]

washed mine in water to get the lumps of mud off an mine was fine

[tonyf]

hi
some are water proof others are water resistant this should explain it the x terras are towards the bottom of the page.

http://www.minelab.com/__files/f/11792/ ... _Guide.pdf" onclick="window.open(this.href);return false;

[Michlar]

I thought the X-Terra DD coils were waterproof? I used to use a 10.5" 7.5 khz DD on my X-Terra 70 in water often without any problems.....

Cheers
Alex

They are only waterresistant will not work in the surf or in shallow waters in salty conditions)

Regards
Michael L. , Denmark

[tonyf]

you know what, i had not looked at the 10" 7.5khz dd, as this is on my 705 as standard and i am sure its waterproof

will have to check in the attic for the box

[newseeker]

ive heard the nel tornado 13x12 is good for beach hunting and waterproof can be brought on ebay for the x-terra 705 7.5khz but havnet got one myself just reading other posts

[Barnet]

I used the 10.5" 7.5 khz DD on the beach, no problems with water and the DD coil in general is alot better than the concentric ones.

[Dave15]

From the Minelab web site:

Water resistant: May be splashed, washed, used in drizzling rain, or moved through wet grass. Must not be submersed under water.
Water proof: Submersible to 1 meter. Ideal for shallow water wading and gold prospecting in shallow
streams.

Whether a submersible coil is necessary for wet beach searching depends on whether you intend to search in rock pools, I guess the answer is yes they are going to need searching and therefore it would need a water proof coil.

Why aren't all metal detectors as water proof as the Garrett AT-Pro and AT-Gold? Don't they get used outdoors in the rain... and search coils may be used under a few inches of water...

Dave

[tonyf]

i sent a email to minelab today,
asking for info on the coils, it looks like there guide is accurate and i thought the 10"dd was waterproof so i am sticking with what the guide says, afterall they should know B-)
heres what the reply said:

There has been some confusion about coils and detectors historically on a general basis!
With that in mind, Minelab Marketing created a Coil Guide which I think you have referred to in your message
The rule of thumb with coils being waterproof or not generally depends on the filling: the insides: they are mostly ‘epoxy filled’, and these would be the [solid coils] as in the standard coil that comes with X-Terra: these would be waterproof.
The lighter [open] coils e.g. 10.5” – as used in the old Explorer design generally wouldn’t be waterproof.
As for the elliptical coils...these are usually [foam filled] and therefore not waterproof.
However, having said all that many people use many coil types without any water ingress issues. I have an early GP Extreme coil I’ve been using for over 7 years and I use it a lot in surf and streams...never failed!
I hope this helps somewhat.
Good Hunting and enjoy the rest of the end of summer season!
Highest regards
Des Dunne
Field Application Specialist
Minelab International Ltd | Unit 207, Harbour Point Business Park, Little Island, Co. Cork, Ireland