Nothing really better than having a fun time doing what we enjoy.
hatpin said:
The last four or five times I have ventured to the woods at the local park I did not do well , finding only one 1951 wheat cent . Today was a nice mild day so I decided to go in there and fight the thick brush . I cant do this when its hot , its suffocating .
When I am into any older period site and pull a wheat-back, I know there's the potential for silver. When I lived in the big city I picked on the older parks and hunted a lot in the brushier and overgrown areas. Places the average hobbyist ignores.
hatpin said:
I set the Vaquero with stock coil to minimum discrimination ...
On the Vaquero & Cibola, that is below the ED120 Disc. minimum so you'll get more iron targets at that setting.
hatpin said:
... threshold at 1 o'clock ...
The position description doesn't mean much because it can vary from unit to unit, and whether the knob was positioned alike on all models. So, let me just presume you set the Tuner control [size=small](what that used to be called on detectors)[/size] for a slight audio Threshold hum.
hatpin said:
... sensitivity at 10 and burrowed inside.
I wonder, do you detect with that top hat on? That would be fun to watch as you "burrowed inside."
hatpin said:
What makes this area double tough is there are a lot of rusty cans to work through.
I love sites with ferrous trash. Nails are the primary offender and can be just barely rejected, but rusty tin? That's another challenge we have to learn to deal with w/o using Discrimination.
hatpin said:
The first coin I found was a 1941 Mercury dime . I was almost certain it was going to be a silver dime . It had that mellow sound and did not disc out but it did get quieter as I thumbed the disc up .
The newer Tesoro's are okay, but I found the older Tesoro models seemed to have a sweeter tell-tale audio quality about them.
As for the Disc., once set to reject iron nails [size=small](which is always at the minimum on my three main-use Tesoro's with ED-120 Discrimination)[/size] I just hunt away and recover all the good and questionable hits. I never tinker with the Discrimination to try and check a target, and it also consumes search and recover time. It's either good or bad and only my eyes can tell the difference.
hatpin said:
It was about five inches down . All five of the wheats had a very faint signal and disc out around tab . I was hoping they were dimes too .
Remember that too much Discrimination reduces depth, and you can lose some desired but lower-reading targets, such as Indian Head cents, etc.
hatpin said:
They all came about 7 inches deep and all were dated in the 1940's . It made no difference where they discriminate out at , when I hear that faint mellow tone, its going to get dug . Thats the good thing about the Vaquero , deep coins have a sound to them that most junk doest .
When set similar to what you did, with a slight Threshold audio hum, most Tesoro's have a splendid Modulated Audio that provides a lot of target information, such as a hint of target size and depth.
Modulated Audio will have a stronger/louder response on surface and shallow targets, and the audio signal/volume strength will start to diminish after the first two or three inches. As it weakens the operator can get a glimpse of a targets possible size and/or shape as well as make a generous guess as to the target's depth [size=small](presuming it is a coin-sized target)[/size].
The counter to this is a Saturated Audio circuitry wherein all of the received signal is processed to provide the same louder volume as a surface target.
Early on, many of the models used a 'clipping filter' so that there was no weak signal. If the target produced ample signal it was passed along with a full-audio response, If the sisgnal was too weak, it was 'clipped' or cut off and there would be no response at all.
Today, many makes and models have some audio enhancement or saturation incorporated in the Sensitivity control, and some models also incorporate a target Volume and/or Threshold enhancement in their variable adjustment. The result is that there is no signal 'clipping', but increased settings can provide more Saturated Audio across a greater target depth range and only the farthest targets from the coil have a reduced target Volume. It kind of overrides the Modulated Range and limits any modulation or reduced audio to the very weakest signals received.
hatpin said:
Volume and quality along with where and how a target disc out is where my machine shines .I'm a thumber .
I am not a "thumber" and I leave the Discrimination set where it will do the most good ... to just reject iron nails. As for the Volume, I like most of the Tesoro model's Target Volume and especially having a nice, Modulated Audio. That's the main reason I have almost always had one or more Tesoro's in my personal arsenal, at least for the past 32+ years.
hatpin said:
I still dont get those super deep coins that others report . Maybe if I supertuned more and run the machine slightly negative would do it ., but then I dont think it would have the same sound quality.
You could increase the Sensitivity to just below instability, and the if you "Super-Tune" the Vaquero [size=small](I used to call this "Hyper-Tune" before Tesoro started using their term)[/size] by increasing the Threshold to, or almost to, maximum, you have essentially eliminated a lot of your Modulated Audio and it will Saturate [size=small](create a stronger/louder response)[/size] for a greater portion of the EMF and reduce any Modulation to only the weakest and farthest targets.
It might help with some detection depth, but usually it doesn't. It only helps you hear some formerly weaker targets.
Best of success the next time you "burrow" away!
Monte
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