1st. time on a beach

[fdl]

Hi everyone.....it's been awhile since I've been out MDing (long winter in Wisc.) & so I went to a lake park that has this camping/picnic beach. I've never detected on a beach so I first tried out my 10.5" 7.5 KHz DD coil. Problem was I seemed to get a lot of false signals, like momentary high tones that would disappear & then could not get them to repeat. I had my sensitivity set to 22, GB was in the low 30's, tracking on & in AM mode with 99 tones set. After digging some of these false signals & finding nothing I switched to the Digger coil which gave me robust, repeatable tones that let me know that something was down there. I didn't find much to wright home about ( 3 clad quarters & a nickel) plus lots of beer caps & flip tops but at least I was on the right track.
I had fun doing it & I'll definitely hit more of these beaches this season. With the 705 on a fresh water beach is there any settings that you do differently then when your detecting on a lawn or field? Thanks & Happy hunting in 2014.

 

[Mark in S.E. IA]

I'v done a lot of fresh water beaches before and use the 10.5 7.5 KHz DD coil and never had a problem with false signals, but i got to thinking that since your in Wisc their might be a lot of black sand mixed in with the other sand and that might be the problem with the false signal... Black sand has a lot of iron in it. Have you ever thought of panning for gold in it, lol

 

[Old Longhair]

He's got black sand, but it usually isn't too big of an issue. You just need to slow down a little more when you're in conditions like that, and don't chase chirps. Listen for solid hits.
Everything else sounds about right.

 

[fdl]

You guys nailed it. Just below the surface the sand is black at least right by the water line. Next time I'll also try out my 9" 3.75Khz coil & give the 10.5 another try. Panning for gold? In Wisc.? Now you got my attention.

 

[brgordon17]

I usually back my sensitivity off a notch or two when I get too many of those false signals. The smaller footprint of the digger usually allows you to run a higher sensitivity than you otherwise would with a large coil, hence it ran a bit smoother. Black sand concentration can vary dramatically and will affect your GB, so make sure you run tracking GB.

 

[Digdoggy]

My digger will give little chirps hitting weeds and stubble in the woods if I run the sens at 22 or higher. I'll put up with that. Its easy to know the difference and since im looking for old coins the digger would hit on them hard, not chirp. I only run sens up 22 or more in woods with a layer of packed leaves and mats of roots to be sure I'm getting the max depth.
Well we are not getting more depth, just telling the machine to play those deep signals lowder with higher sensitivity.
Dog