Ok Okle, tweak is to get more out of em or use for something they weren't designed for with good results.
I don't open em up or change the pot or put in new a new mod, the el cheapo's are not really made for that.
Any machine can be made to run a little hotter.
So far adjusting the original design has not proved effective with little noticeable gains, so BH did their homework.
I have found little things like a loose coil wire or shaft to hurt the machine, so a piece of black electrical tape is a few spots has cleaned up the falsies and signal.
The normal settings produce good results, but in certain soils I can run with no discrimination at all, by not keeping the head of the coil so low to the ground. The BH gets a overload signal real easy running that way. It also helps to pinpoint the target and get the size of the target. I obviously am not hunting coins in that mode. It makes the machine very sensitive and you need to be away from all trashy areas.
Keeping the machine clean, and checking the coil connection, just standard stuff every one does. I also will put objects on the ground to be hunted and play with different settings, not that there are many, till I get two I like. I switch back and forth over a target to know what it is before I dig. The bh lacks a true target and depth id. You need ideal situations to get it to work.
I have two other cheapo's. One is a Harbor Freight 6 function with a analog indicator. Its great as it tells me if Im hitting mineral or metal. It has a very small head, and I pull it out when I'm pin pointing a target and getting multiple readings. It can be made very small and almost fit into a Walmart bag. Its great for just surface scanning a parking lot of open area for just loose change and jewelry. My wife will use it sometimes and we switch if we are detecting a area for the first time. It is super light, and really sensitive on the smallest of items. The battery's last forever.
My other cheapo is a Famous Trails. Some company out of California makes em. The coil connector was bad and I picked it up for a few bucks. It has manual ground balance and two tr control settings. My other coils are supposed to be compatible, but I want this for a meteorite coil I'm going to buy or build. The Ground Balance setup on this is a dance. It is also has adjustments that can be made inside the machine.
As for running power through em, maybe at the coil, then step the return signal down a bit. I also have several old CB radios with to experiment on with frequencies. But that is two different technology's that may not be compatible. It a lot safer than messing with ground penetrating radar or microwaves. I think the coil could be tweaked a little with a better power source, but not sure it would give worth while results.
Now if your still reading. Just find the wiggles, and tape em. Also try all your machine settings backwards and forward and try to trip it up. You will be surprised what you gain when you loose somethings.
PS, my FT detector is a two coil and I need to understand a little more on the send and receive.
Sorry for the picture crop, I just switched laptops so I could run some gps in the field. I find every aspect of the hobby interesting. Used to work with simple programs back in the day when everything was epromed onto a chip. Cant wait to look at the code on the detectors, if it inst encrypted, don't want to get into that.
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The more I learn, the less I know.
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