Any tips for hunting black cinder areas?

[aproc123]

I live close to a fair ground that has been in use for a long time but has a large area that is covered in black cinder. The few times I've hunted it I get tons of false signals in the coin range making it difficult to find targets. I haven't tried my qxt or dfx there yet. Both have the hot rock reject...will rejecting that zone help? For the dfx I have the 6x10 double d and a bigfoot (double d) for the qxt and stock 9.5 coil. Anyone had any success with this type of ground and can offer any tips? I know there is tons of stuff to be found but have not figured out the setup yet.

Thanks,
Adam

 

[Explorer]

Black (or red) cinder rock is generally lava rock which should not effect your detector. Take some of the cinder from a spot where you are getting false signals to a know clean area and see if it is really the cinder causing it. There could be buried cables or wires causing interference.

 

[MattBullSummerville]

We have some slag from a steel mill here in Charleston that will cause a detector to act up. Locals use it in driveways instead of rock.

 

[Explorer]

I could see steel slag giving you a fit. I hunt some rusty iron infested sites. I generally pick a clean spot to ground balance and turn auto tracking off. Then I back off on RX, DISC and All Metal settings, turn Hot Rock on.
This seems to help in the areas I hunt.

 

[aproc123]

I don't know what it is composed of, coal cinder is what I've heard it called. It makes using a detector hard.

 

[airscapes]

With the DFX set the hotrock rejection to 10 this will just ignore them. Also you might try 3kHz mode as this is less susceptible to VDI wrapper around. If you are still having issues with 3kHz only, try correlated with hotrock at 10
Good luck!