I'm attaching the manual (downloaded from Fisher's site). (Edit: see Steve's link in his response below.) On page 9, bullet point 4. it says: Still holding the GEMINI-3 parallel to the ground, slowly turn the balance knob (with arrow) on the three-piece handle counterclockwise until you get silence (null) and zero meter reading.
My question is this: is the knob actually doing an electronic adjustment (such as being attached to a variable resistor or capacitor) or is it just re-aligning / repositioning the transmitter/receiver/attachment rod to optimal location?
By Mike Hillis
Getting ready to buy another Omega 8500. I love the feature set on this detector.
I field tested prototypes of it and got a 1st production run model for compensation of my time, which I sold last year to fund some other detector purchases. Looking at the market there really isn't anything to compete with its feature set when you need something more than simple phase shift target id in its price range....when you get the chance take look at the operating manual.
I especially like the Multiple Target Category System:
This feature is available only in Discrimination Mode. For each target, the Omega 8500 calculates four independent numerical Target-ID’s on each pass of the coil; one primary and three secondary. Each one of the Target-ID’s will correlate to a target category on the LCD. There will be one solid primary category lighting up and up to three additional secondary target categories. All are different readings of the same target, with the primary category being the one with most reliable signal. If the Target-ID’s vary, they will show up as multiple illuminated categories, and this could indicate the detector is picking up noise, a faint/weak signal or that the target is irregularly shaped.
It has its warts but I have found some good gold jewelry with it, attaching a little 18K eye candy...
Now just to figure out where to buy it from.
Detected a stretch of a river that had some erosion on the banks and sand removed down to the gravels. I dug up many coins including a buffalo nickel and a silver dime that someone was going to make into a ring. The best find was a 14k ladies ring 3.1g (not a genuine stone). Also dug up what looked like a white gold ring turned out to be stainless steel.
The tarsacci has good recovery speed like the T2 worked great in the trashy area with broken pieces of rusted old steel cans, bottles caps, bits and pieces of iron along with all the newer junk tossed into the river. The tarsacci worked better than my T2 it found targets in a area I couldn’t use the T2.
The 2 wheat pennies were dug up at a old park 6-7 inches deep. The tarsacci goes deeper it’s just that my ctx did a good job sniffing out most of the oldies at this old park.