The only team I've heard of from Iowa are the Hawkeyes.
Nice thing about having two Universities in two conferences. Odds are improved for not having a total washout on any given Saturday!
By the way, do you guys have a team this year?
Just joking with ya Kurt!
I live about 100 miles straight east of you and find the mineralization levels can fluctuate quite a bit, depending on the specific sites. I like to hunt old coins at old sites. Most of the places I hunt today are corn fields or bean fields. The mineralization will vary from field to field, depending on the amount of chemicals dumped on the fields over the years, and the ground moisture at the particular time of the hunt. This past week I was running mine as low as 28 in one field, and (after the rain) as high as 57 in another.
If you have the 9-inch concentrics at 7.5 kHz and 3 kHz, along with the 6-inch DD at 18.75 kHz, you have my three favorite coils. If you've read many of my posts, you know that I like the 3 kHz simply due to the inherit "rejection" capabilities of ferrous targets. You've also read that I like the 6-inch DD for target separation in trashy areas. Naturally, the 9-inch coils will provide better depth of detection. I've dug coins at 8 inches, no problem. I have no doubt that it will hunt deeper, and does so in my test plot. Just happens that most of the coins I find are closer to the 4 - 7 inch range. I honestly believe that in our part of the Country, the majority of old coins "hiding" out there are still there because of target masking, not extreme depth. That is one reason I have been spending some time with the 6-inch DD. It seems to hunt very deep, for it's size. Those 2 Seated dimes I dug last week were 5 - 6 inches. And the separation characteristics are very good. I spent a lot of time comparing coils and settings. And I believe the 6-inch DD coil at 18.75 kHz will hunt silver and copper coins every bit as deep as the 6-inch concentric at 7.5 kHz. I know that goes against the theories we have come to know. I can only attribute it to the 6-inch DD coil being extremely "HOT"!
There have been times when the target was so deep that the visual TID would not provide a reading. However, the audio was consistent, as was the location from which it came. One particular target I remember was a V nickel at every bit of 8-inches. If you have read my articles on coinshooting with the X-Terras, you know that I am a big promoter of consistency. Consistent location, consistent audio and consistent TID, in that order. Sometimes the target is just too deep to provide reliable TID. But if the audio is there, I dig it. HH
If you ever get out and do some digging, maybe we can meet up somewhere in the middle and dig a few coins. Know any spots around Neb. City?
Randy
