If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
@ jap
You're right, not only coil-proportion, but "contrast factor".
Of course it is possible under laboratory conditions to detect
a 10x10m copper wall from 8 or 9m distance even with a
20cm coil.
BUT:
This works if the detector incl. coil has a fixed position
on a turnable table. In that case if tuned to high sensitivity
there is enough difference or contrast so the detector can
siganlize it. Turning the detector in such a scenario is comparable
with running extremly fast over a site with all the time identic
mineralisation, exactly all the time the same coil-ground
distance and then there is a huge find of 3x3m in size
5m below.
Under real treasure hunting conditions it is totally different.
The laboratory contrast factor will be reduced by 50% because of:
- soil mineralisation and moisture
- always slightly different coil-ground distance and vegetation
- changing coil sweeps
- metal the treasure hunter wears on his body or holds in other hand
- changing electrosmog-fields, temperature and humidity
And especially the slow search speed or in this case "walk forwards"!
If there really is a huge metal object 5m below and you have a
detector without everything blurring motion-circuit you would think
the ground has changed or you even wouldn't recognize the
difference at the ca. 2m large area from where the huge signal,
slowly but real more intense becoming signal, from below, starts!
Turning the coil around only works horizontally in air but not
vertically if you wanna do the same with metal buried in soil!
OK, it works for close and large enough stuff, in that case
you can locate the find even from different angles.
But not for hard detectable very deep finds.
Those new turkish "super deep detectors" are all just copies
of the Jeohunter (Jeosonar) from Makro Detector which now
is already over 25 years (since 1986) in business!
But the standard coil of the Jeohunter has even better size
because it is more rectangular compared with those usual
round 40cm DD coils. And the above detector is much too
heavy for a longer searching period.
If everything works perfect the new Jeohunter model incl.
hitec design special coil will really reach "directly" 9m.
For this task the internal "contrast factor detection circuits"
must be improved also. You can compare this new detector
with a 1x1m frame detector and 20cm coil in One, but it will
be much deeper than a PI with 1m coil! Because the Jeohunter
with standard 35x45cm coil already is deeper than those!
The future of metaldetection has started already!
Forget about detecting either small stuff or deep stuff
and forget all those compromises with 30cm DD coils etc.
Hi Funfinder
I understand what you mean to view information - Thank you for this beautiful sequence - and I noticed you love for Jeohunter models .
-And considering that use of this technique ****contrast factor detection circuitsis**** a new beginning for another powerful devices.
best time
j.
Comment