In our country there are many fans of large coils for metal detectors. And, I am among them. I will say right away that there are a number of myths regarding “rudders” that amuse, amuse and amuse me, a digger with many years of experience. And one of these myths is that with a large coil it is generally impossible to walk through littered areas. Moreover, based on the plowed foundations of 20th century houses.
Perhaps my experience would have been more objective if I had been able to dig around with coils from different manufacturers. However, from the entire list, at one time I chose the Nel Tornado, and that’s why I’ve been digging with it and the Fisher F70 metal detector for almost five years.
The initial data of my departure: A plowed and covered field, where once stood an ancient building with 40 yards. The place has been dug several times, but still continues to delight with finds. Finds: 19-20th century. Litteriness: high, 8 points on a 10-point scale. Metal detector: Fisher F70.
I arrived, got ready and went out to dig. It took about half an hour to get used to it, or more precisely, to remember how this Fisher generally works. I've been digging with XP ORX for a year, so I had to get used to the old device.
For a beginner in such places and with a sniper there will be a nightmare and an incomprehensible cacophony of annoying sounds. For me, as an experienced hacker, the informative voice-over came very quickly. Moreover, headphones help well in such situations. A device with 4-tone voice acting will provide the user with a lot of correct information.
Phantom iron signals will always produce a slight wheezing sound at the edge of the wiring. And, if you learn to hear this wheezing, then very quickly you begin to dig only colored targets. Oh, there was plenty of colored garbage here. Particularly constantly and every time, one foundation irritates me where, apparently, there was a forge. The whole ground there is strewn with aluminum melts.
Behavior of the Nel Tornado coil. I don’t know how it is with other reels, but with proper skill, the Nel Tornado can behave like a sniper in littered areas. This is when, while wiring, you catch a high-tone color signal. And then, having tracked the point, you begin to move with short movements of 5-10 cm above the target, precisely the center of the coil. In this case, you can clearly understand both the size of the target and its composition, whether it is a fake or something really colored.
Also, and this is understandable why, Nel Tornado sees deep targets only with the central sector of the coil. You can understand such subtleties only with good headphones. Headphones are a device that can double the number of finds in a mine.
Note. I'll debunk another myth. The fact that when using a large reel, an untrained user’s hand begins to quickly get tired. I haven't dug with the Fisher F70 in over a year. So, sometimes checking the device at different locations. So, having taken the device, I calmly went off for 5 hours of digging with a large coil. And, nothing fell off, I didn’t dry out or even get tired. It's all about choosing the right rod length. I have written about this several times. If you adjust the length of the rod so that the device hangs in your hand and is not held in a bent elbow, then your hand will not get tired of heavy coils.
The result of five hours of digging can be seen in the photo. The buckle definitely counts. In the photo in the swag bin with a red rag is a Fisher F70 find, with a white rag is a find of a comrade with a Deus. As you can see, there is no difference.
Bottom line. With a large coil, you can and should dig well through littered areas and plowed foundations if you have a device with polyphonic sound and you have more or less normal headphones.
