Detecting frozen ground?

[signal_line]

I was out deteting and the ground was frozen about three inches down. I noticed something was not right. Coins at four or five inches were reading "06" sometimes and I could barely detect some coins. The ground mineralization bar was about half way up the scale. The Deus was hitting more targets when I switched from GMP to DEEP. I probably should have tried to run GOLD FIELD. Any suggestions would be appreciated. Kinda wonder if I should have turned the Tx power down to "1". I was still finding quite a few coins but I know I wasn't gettig them all.

 

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[vferrari]

What coil and frequency were you running? I have found that running a higher frequency (25 khz) sometimes works well in mineralized or frozen ground (my ground is typically mineralized so I have not seen it change to more mineralized when frozen), but I am typically going after relics not just coins. Note that switching to Deep ups TX power to 3 on non-HF coils. I now typically run Gold Field (called Gold mode on Orx) almost exclusively since switching from Deus to an Orx.

 

[NHBandit]

Boy I sure don't miss that. Born & raised in New Hampshire and lived there until about 8 years ago when I came to my senses and moved to Tennessee. I can remember many an early Spring day heading out to the woods to do a bit of detecting because it was warm & sunny only to start digging a signal and finding that the ground was as hard as a rock. Not an issue here. It did seem like I got better signals on the deep stuff though when the ground was frozen. Maybe the water content ? No clue but it was an obvious difference.

 

[signal_line]

Thanks for the info. I was using 9" X35 coil. I switched the frequencies usually between 12 and 18 KHz looking for something better. Never tried 25 KHz so next time. Gold field, too. My brain was rusty and in a bit of a whirlwind as this was my first outing. I didi a web search and only could find "Lower the senitivity" but the explanation was so you don't detect deep targets. In years past I have attempted to detet frozen ground (at 6.59 KHz) and figured out the depth is lacking. I was kinda hoping some magic setting would help. Right now I think Gold Field and a higher freq. is my best chance. So will do some more experimenting once it warms up

 

[signal_line]

It's possible some of the weak signals were coins on edge that other detectors had missed. But i was getting a lot of them, I don't know. A lot of corroded zinc.