425.00 USD Tom D. tuned CZ6a to 11.3 with 8in. coil Bullhead City

This is the splash proof model. Tom calibrated this unit September of 2016. It has 10 in. coil and includes hard case. Will accept usps money order




Tom D. results are as follows:


Hi Jim,
> > > > > >
> > > > > > I finished the full calibration/validation/certification of your
> > unit
> > > > > > this afternoon. Results as follows:
> > > > > >
> > > > > > 1) 'Salt' balance was somewhat out of alignment..... which affects
> > the
> > > > > > entire spectrum & calibration of the unit. Now..... it is 'per
> > > > engineering
> > > > > > design'.
> > > > > > 2) Deep target audio smear did not exist....... no correction
> > needed.
> > > > > > 3) I boosted 'Salt' mode auto-tune/all-metal Sens a bit more.
> > > > > > 4) 'Salt' Nickel ID was slightly out of spec's....... and is now
> > per
> > > > > > engineering design.
> > > > > > 5) 'Salt' Zinc ID was exacting........ no calibration required.
> > > > > > 6) I stabilized the electronics to a greater level of stability.
> > > > > > 7) Grnd Bal internal set-point was very slightly out of cal.....
> > and is
> > > > > > now in spec's.
> > > > > > 8) 'Normal' Nickel ID was mildly out of specifications........ and
> > is
> > > > now
> > > > > > exacting.
> > > > > > 9) 'Normal' Zinc ID was slightly out of alignment....... and is
> > now per
> > > > > > engineering design.
> > > > > > 10) Internal electronics are now exceptionally clean.
> > > > > > 11) Unit was 11.1" on a clad dime in 'Normal' mode. Unit is now
> > 11.3"
> > > > on a
> > > > > > clad dime in 'Normal' mode. This is with real-world dirt..... AND
> > IS
> > > > WITH A
> > > > > > 8" COIL (for 'standardization' purposes). ((( It's 12.2" on a clad
> > dime
> > > > > > with your 10.5" coil. )))
> > > > > > 12) Audio boost circuitry was nearly exacting ......... minor
> > > > calibration
> > > > > > performed.
> > > > > > 13) I boosted 'Normal' mode auto-tune sensitivity a bit more.
> > > > > > 14) ID at depth is better than engineering design.
> > > > > > 15) Depth meter accuracy is 'CZ spec's exacting'....... no
> > correction
> > > > > > required.
> > > > > > 16) Pinpoint function per engineering design.
> > > > > >
> > > > > > This unit is a very good representative/example of "CZ-6a" design
> > > > intent.
> > > > > > Solid performer...... electronically stable (although I did
> > somewhat
> > > > > > 'overdrive' this unit a slight amount).... about 11-1/4" on a clad
> > > > dime in
> > > > > > real Florida dirt. This unit is 2-decades old.....and should last
> > > > another
> > > > > > 2-decades.

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