Instruction manual
I hunt a lot of old farmsteads. As such, many of them are littered with
broken pieces of implements and rusty nails from fences and barns.
Simply put, I nd these ferrous targets produce a very distinct audio
response that is more easily distinguished by my using the 3 kHz coil.
When I get an “iy” target, I simply sweep back and forth over it, while
dragging the coil back toward my feet. As the target leaves the detection
eld, if it produces multiple low audio tones, you can bet it is not a coin.
If I were in a Discrimination Pattern, with specic notches rejected, the
detector could “blank” over all of them. And even if I were hunting with
all notches accepted or All Metal, using anything less than Multiple Tones
will result in the detector only producing the same “one tone” for all the
ferrous targets.
For example, if the TID on a piece of iron bounces between -6 and -8 in
multiple tone, I will hear one tone when the -6 registers and a dierent
tone when the -8 registers. If in one tone, two tones, three tones or four
tones, all ferrous targets provide the same audio tone. As such, I wouldn’t
be able to hear the dierent pitches of tones or a “blending of multiple
tones” that I do with the multiple tones.
This could result in my not being able to identify the target as iron until
I dig it up. These pitch dierentiations are best heard with the 3 kHz coil,
because the properties of ferrous targets are more easily identied at
lower frequencies. As the detector’s frequency increases, it becomes more
dicult to identify those ferrous properties. By combining the 3 kHz coil
with target sizing and other techniques I’ve learned, I’m able to eectively
eliminate most of the deep iron from my hunts.
49Understanding your X-TERRA - Coils