F75 in the wet salt sand

[markg]

http://www.youtube.com/watch?v=XcOsWXf_1sc

 

[ziphius]

That's an informative little video - thanks for posting. I have had good luck using all-metal at the beach with my F75, with a manual ground balance of about zero and threshold the same. I suspect my Excalibur will go deeper, but I haven't tested them head-to-head at the beach - maybe the time has come.

Jim

 

[brnn53]

I used mine at Topsail Beach on Friday. I was able to hunt in AM with GB at zero and sensitivity at 90. A little noisy in the water but still hit targets nicely. Found about 2 bucks in change in less than an hour. I know there is jewelry there but I was with the wife and didn't want to totally ignore her so I quit. Bah!
Mike

 

[John 'n' W.Va]

Two weeks ago I had my F-70 in SC.at Folly Beach. I was also in Fl. that week. The more black sand the more it would false. Daytona was the quietest that week. North Saint Augustine was the noisiest. Nowhere was it so bad that I couldn't adjust it out. Did you have to do much to adjust out the falsing?

 

[markg]

I would re-check the GB often, but most of the time the adjustments were just a click or two away. Ground balance in the wet sand was never above 1, but always in the 5 clicks between 0 and 1. I felt blessed that I could run with sensitivity 95 and even in je mode with no chatter. Actually one time I thought the machine was broken so I went back to the house where we were staying to see if EMI would increase and it did. Walking over the dunes to the beach allow me to run at max most of the time.

 

[ziphius]

John in W VA,

If my machine 'falses' in wet sand, I'll do a few things to deal with it and usually, I can eliminate most of the falsing, even here on our iron-rich CA beaches.

1) In all-metal mode, make sure manual GB is set to minimize "ground return" (usually near a setting of zero on our beaches)
2) play with threshold to minimize noise
3) reduce sensitivity as a last resort (it sounds like folks are able to run their machines pretty hot if they have #1 and #2 taken care of

Good luck out there and good to hear you got out to the coast.

Jim

 

[ziphius]

Looking at the video again (and a great method, using the string), I'd say the depth estimate was conservative, probably closer to 8.5-9 inches and in a wet salt environment to boot. I routinely carry a ruler while detecting (my hand - 7.5 inches from wrist to tip of middle finger) and unless he has baby hands, that depth was a bit greater.

 

[Mole]

Mark, that's a terrific video you've done ...
Nothing wrong with those signals eh!

<img src="http://i65.photobucket.com/albums/h212/Snowypete/Moleanddime.jpg" border="0" alt="Mole and Dime">


HH Mole

 

[markg]

I couldn't locate a ruler of any kind, but I wanted to make sure I didn't stretch the truth.

Looking at the video again (and a great method, using the string), I'd say the depth estimate was conservative, probably closer to 8.5-9 inches and in a wet salt environment to boot. I routinely carry a ruler while detecting (my hand - 7.5 inches from wrist to tip of middle finger) and unless he has baby hands, that depth was a bit greater.

 

[Tinfoil]

When you manually G/B in all metal push it up 2 ,3, or 4 numbers positive G/B Try that to the small pebbles first. Then if that don't work do like I said with G/B to some of the larger rocks. : : HH Jerry aka Tinfoil