Chatter question

[fongu]

I have a question about chatter. I'm trying to use my 12 or 121/2 inch imaging coil on my 2500 and all I get is chatter or overload noise. I forgot I was using rechargeable batteries and did a factory reset. After this the top cursor was jumping all over the place and I changed the menu selection for nicad batteries. Then, it said the batteries were low and I installed brand new regular batteries and made sure to change it from nicad to regular batteries in the menu. No matter how small the target, when I pinpoint and get within an inch or two of the ground all I get is chatter. I found a 3 inch section of brass or copper and under it a washer, but still got the chatter for these small object. Did another factory reset to no avail. I tried running the coil cable up the shaft 10 to 12 inches and tieing it off with electrical tape and that did not work and now I just have it wound around the shaft and connected to the housing. It doesn't matter if I put it in jewelry, custom, coins or all metal, I still get the chatter. I checked the batteries for good connections and wipe down the coil and I'm still having problems. The soil does not have a lot of minerals and I reduced my frequency from 4 to 3. Any higher than 4 and it makes a lot of chatter also. I figure I'm doing something wrong. Can you more experienced members help me figure this out. This is the same coil I found the buffalo/indian head nickel with the other day.

 

[BigCatDaddy]

Try the stock coil. If the 2500 doesn't do it with the stock coil, then I'd say you've got a bad coil.

 

[fongu]

I solved the problem. It's the headphones. I took them off and went back over the same area and no chatter. If it's not the headphones, it's the jack they plug into. I will get another pair of headphones and if that fixes the problem, I have eliminated that possibility. If not, it's the place where the headphones plug into the jack. I will have to run this test with the stock coil also. My bets on the headphones, tho.

 

[BigCatDaddy]

Come to think of it, my headphone jack went haywire one time on my 2500, but I can't remember what the symptoms were. Seems to me I just quit getting a signal intermittenly.