Hay Rebel,"The Silver Umax has a sensitivity control the Compadre doesn't.
What is the advantage, if any of that. I know the Compadre works
at a higher freq. than the Silver and is supposed to be a better
small gold getter".
I think the advantage is that the Silver is a little deeper.
The Compadre is more sensitive to small gold than the Silver uMax.
It is more sensitive to iron than the S uMax. But, that is actually a
benefit when when hunting in iron. It actually reduces masking.
"The Cibola has sensitivity and threshold. Isn't threshold about the
same thing as ground balance? If not, what is the difference, and
why would the Vaquero with ground balance be better than the
The threshold is for the all metal mode. The all metal mode has a
constant tone when it is not detecting anything. That tone can be
turned very loud, or it can be turned until it is silent. The desired
amount of threshold tone is when it is just audible. Then you can
tell when it nulls out.
The threshold can also be used in conjunction with the sensitivity
to "supper tune" a Cibola or a Vaquero.
Ground balance is kind of like a discriminator.
All ground has some conductivity. Just not a lot like most metals.
The metal detector can see the ground and respond to it. That is
not good. It makes it hard to find something.
The ground balance can tune out the ground. Then the ground is
said to be invisible to the metal detector when it is ground balanced.
The Compader and Silver uMax actually have a ground balance.
It is inside the case, and it is set at the factory. It is not real hard to
set. I have done it on my machines.
In most places the ground balance can be set and forgot. But, when
the conductivity of the ground changes, the setting needs to change
to accommodate it. The preset machines are at a disadvantage if
the setting is wrong, or if the soil varies.
Ground balance will help on beaches, but these are not wet salt
machines. They will suffer some like most land machines in salt
But you can use them on most beaches and even the water. But
some sand conditions resist all but the water PI machines.
Just depends on the beach.
Hope that helps,
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« Last Edit: August 01, 2009, 02:30:03 pm by tabdog »