Menu
What's new
Find's Treasure Forums

Welcome to Find's Treasure Forums, Guests!

You are viewing this forums as a guest which limits you to read only status.

Only registered members may post stories, questions, classifieds, reply to other posts, contact other members using built in messaging and use many other features found on these forums.

Why not register and join us today? It's free! (We don't share your email addresses with anyone.) We keep email addresses of our users to protect them and others from bad people posting things they shouldn't.

Click here to register!

Need Support Help?

Cannot log in?, click here to have new password emailed to you

Changed email? Forgot to update your account with new email address? Need assistance with something else?, click here to go to Find's Support Form and fill out the form.

explorer falsing

A

Anonymous

Guest
When detecting the beach I notice some days a buildup of falsing at times reaching a nerve wracking amount. I find two things improve the situation, one is to turn the machine off and back on at which time it becomes almost silent, and the other method is to tap the coil on the sand, but it does not work as well. when the machine is working well I get falsing if I hit a mound of sand. I use iron mask and sensitivity at full bore. tried reducing sens but no improvement. At first I thought it was static buildup, but turning the machine on and off squelches that theory. Other posssibility is moisture. Not sure if it is worse when wind blows and there is more moisture in air. I know touching the coil to water will make a falsing. The falsing buildup has happened on numerous occasions. Any words of wisdom from the gurus ?
 
Turning the machine off then on resets the ground balance and may account for the improvement. Pushing noise cansel will also do this. It is possible that you may have a falty coil. I have heard of simular complaints. As for falsing when you bump somthing, that is normal. All coils do that. Also when you max out a machine it becomes much more sensitive to outside interference and has a tendency to get unstable. Sometimes switching from manual to auto will help.
If all else call Minelab. They are very helpful. All it costs is a few minutes long distance.
 
Hi Folks, I just switch off and when this Happens (not very often)and the detector settles down to normal again.Jerry.
 
I have read on this forum that sand and dirt build up between the coil and its cover can cause falsing to occur. Make sure it is clean.
I had similiar problems several weeks ago when I was at the beach. Turning off machine did work for a while. More falsing as water would go under coil. Just keep trying different settings and maybe you will find a solution
Gadgetman
 
I have had exactly the same problem, and I also run full bore (sensitivity = 32) at the beach. But I noticed the problem occurred only after I had dunked the coil in salt water a number of times. I would then start to get falsing which could be stopped by shutting down the machine and turning it back on. I have attributed this problem to the buildup of sand beneath the coil and coil cover. If there is a lot of water present with the sand, it sloshes around and causes the falsing. I found that by inverting the coil and letting the water drain, most of the falsing would disappear. As further proof, the last time at the beach, it was rather chilly, so I didn't dunk the coil at all. And voila - I had no falsing at all that day. I have been considering RTVing the coil cover to the coil to prevent water and sand and dirt from entering.
 
I have been considering applying a rubber cement to the coil and not using a coil cover at all. The idea being that it should peel off nicely when I want it gone and the cement is not water soluable. The only problems that I could envision are soil/sand becoming embedded in the cement and the "cover" peeling off accidently in brush or something.
Has anyone tried anything like this?
Tim
 
Tim,
Can you or anyone else think of any drawbacks to RTVing the cover to the coil? My thinking also is that the silicone RTV glue should peel right off should I ever need to remove the cover from the coil. But if you put a sufficient amount along the seams, it seems to me that it should stay sealed "forever". Opinions?
 
If the RTV peels away, then it sounds like a fine idea to me.
BTW, what does RTV spell out?
Tim
 
Silicone will help seal out moisture/sand, etc better than using nothing. However, the one downside that I have experienced is that it can give you a false sense of security. I have found that inevitably it will leak (especially if you hunt in or near water) and cause irratic behaviour which usually starts slowly and over time gets worse until you almost think the detector is defective.
The first couple of times this happened to me I checked everything else first (because I thought it was sealed) only to eventually find water and mineralized sand in the coil cover. When it was removed the detector worked as smooth as when it was new.
So as long as you keep this in mind it will probably do some good. As for me I no longer seal the coil cover. If I'm doing shallow water hunting I actually remove it. I don't hunt this way too often and so far the bottom of the coil looks totally unmarked.
Good luck and HH ... Gord.
 
A number of things can cause falsing at the beach with an Explorer.
1. Sensativity run too high. The beaches I hunt vary between 12 to 20 as the highest sensativity setting I can use due to the amount of mineralization. The machine goes deep no matter what the setting is.
2. Raising the coil up at the end of your side to side sweep arc.
3. Like the other guys say..sand and water between the coil and cover. I don't use a coil cover anymore at the beach because it's a continuing problem. I don't tend to rub the sand with the coil so it doesn't wear much. I have one coil that I have been using at the beach for at least 5 years with no problem. Every sealing method I've tried has eventually leaked.
4. Change frequencies as often as necessary to stop creeping falsing. The areas I hunt are alive with Navy frequencies(San Diego)of all sorts. What sometimes works for 30 minutes will sometimes go bad. Finding a new frequency will most of the time eliminate the problem. If you turn your machine off to eliminate falsing, perhaps it turns on at a better frequency(?).
5. Sometimes reducing the gain will work for me. I believe every place hunted presents unique problems.
 
Tim,
I'm not sure what RTV stands for. If I ever knew, I've forgotten. I'm looking at a tube of "Permatex Sensor-Safe Blue RTV Silicon Gasket Maker" that I purchased at an auto store when I changed my car's thermostat. It was recommended for sealing the new gasket and helping to hold it in place during the repair. I am now looking at a tube of "DAP 100% Silicone Rubber Sealant" for windows and doors that I also call RTV. I'm not sure, but RTV might be a General Electric tradename for silicone rubber cement.
 
Hi Gord,
Yeah, I can imagine that happening to me. I've tried waterproofing other things with RTV but no matter how careful you are, water seems to find a way in. I also gave thought to removing the coil cover at the beach, but I am a "scrubber". I scrub the coil across the surface of the sand or dirt while hunting, unless it's a gravel driveway or cinder road. Then I'll just skirt the top of the rocks or cinders. I'm afraid I might get carried away at the beach and scrub a hole in the bottom of the coil if I don't use the cover.
 
You must log in or register to reply here.
Top