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Can't Register? Can't Log In? START HERE
Please read BEFORE contacting admins
Topics: 3
Posts: 3
Last Post:
Other Issues
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Announcements
Read this first before posting
Topics: 2
Posts: 2
Last Post:
Commercial vs Non-commercial posts
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| Inside the Metal Detector | ||||||||||||||||||
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ITMD1&2
Discussions concerning content, circuitry, source code, etc for the 1st & 2nd editions.
Topics: 61
Posts: 696
Last Post:
Probe PCB from Silverdog
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ITMD3
Discussions concerning content, circuitry, source code, etc for the 3rd edition.
Topics: 22
Posts: 604
Last Post:
My humble take on Proximity (PLL) design
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| Technology | ||||||||||||||||||
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Tech Forum
General tech discussions on all types of metal detectors: VLF, 2-box, BFO, off-resonance, PLL, etc. Questions, ideas, and anything else that moves you.
Topics: 5,594
Posts: 86,240
Last Post:
Minelab 8000
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5,594 | 86,240 |
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PI Technology
Tech discussions specific to Pulse Induction
Topics: 442
Posts: 24,925
Last Post:
Deepers metal detector
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Coils
Same as the Tech forum, but coil-specific.
Topics: 2,343
Posts: 24,902
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2,343 | 24,902 |
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Modifications
Detector mods, plus any other useful add-ons.
Topics: 761
Posts: 7,838
Last Post:
DRS EXPR PRO METAL DETECTOR
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761 | 7,838 |
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Schematics
If you have a schematic to share, post it here. Please read the Intro post for rules on posting schematics.
Topics: 1,629
Posts: 31,014
Last Post:
Magnetometer MWB2.
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General Detectors
A place to discuss the non-technical aspects of metal detectors. Your favorite detectors, favorite features, or favorite accessories.
Topics: 77
Posts: 1,390
Last Post:
GOLDEN MASK Virtus from June 2026 by Vladko
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Magnetometers
Tech discussions on mags.
Topics: 747
Posts: 4,253
Last Post:
Okm fusion light
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Technical Books, Papers, and Literature
Technical books, papers, and literature related to treasure hunting technology.
Any books written by Geotech members are made sticky at the top of the forum.
Topics: 15
Posts: 180
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Side Scan Sonar
Tech discussions on sonar, transducers, and towfish construction.
Topics: 873
Posts: 3,293
Last Post:
JW Fishers Pulse 12
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873 | 3,293 |
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Geophysics
Other geophysics techniques, including earth resistivity, GPR, infrared, induced polarization, etc.
Topics: 379
Posts: 3,418
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379 | 3,418 |
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Tools & Techniques
Vacuum forming, coil winding, packaging... anything mechanical.
Topics: 207
Posts: 2,205
Last Post:
AI
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General Electronics
Cool circuits, tips, techniques, PCB methods, test equipment, etc.
Topics: 600
Posts: 5,934
Last Post:
trash technology
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600 | 5,934 |
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Programming
This is a special section dedicated to coding techniques, tips, tricks, methodology, programming various modules, MCUs, digital filters, etc.
Basically, anything code-related.
Topics: 59
Posts: 522
Last Post:
Telegram Attack!
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59 | 522 |
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| Projects | ||||||||||||||||||
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Project Competition
Got a something in mind you would like to see designed? Post it here and see who can come up with the best solution.
Topics: 12
Posts: 796
Last Post:
Let's make a closely MXT like detector!
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12 | 796 |
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Completed Projects
Projects that have been reasonably completed
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Active Projects
Projects that are currently being developed
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Abandoned Projects
Project that were never completed but may still have good info
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| Misc | ||||||||||||||||||
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Buy-Sell-Trade
Detectors, parts, electronics, and so forth. No dealer restrictions.
Topics: 1,086
Posts: 5,699
Last Post:
looking for a Tesoro 4-pin coil.
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1,086 | 5,699 |
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Treasure Magazines & Books
Buy-Sell-Trade-Discussion specifically for treasure mags, books, & other publications.
Topics: 213
Posts: 456
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213 | 456 |
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Vintage & Collectable
Pics & info on vintage detectors, for those who like "the good ol' days" of digging everything.
Topics: 191
Posts: 1,046
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191 | 1,046 |
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Melbeta's Vintage Files
Unique vintage metal detector info donated by denizen 'Melbeta'.
Topics: 91
Posts: 606
Last Post:
Discrimination just does not work!!
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91 | 606 |
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Free Advertising
Those who have products & services they would like to advertise may do so here. Please read the Intro post.
Topics: 122
Posts: 135
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122 | 135 |
by Rama2389
02-10-2025, 12:48 PM
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Forum Issues & Feedback
Problems with the forums? Suggestions for improvements? Post them here.
Topics: 4
Posts: 32
Last Post:
Getting back on off topic
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4 | 32 |
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| Offsite Forums | ||||||||||||||||||
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Advanced Metal Detecting Research Lab
Italian website run by Leonardo Ciocca.
Since 2009, a technical reference point. Objective and impartial to all lovers of the metal detector.
Topics: 0
Posts: 0
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Foro de la Asociacion de Detectoaficionados de Extremadura
Spanish metal detecting forum.
Topics: 0
Posts: 0
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Eric Foster's PI Tech Forum
at Findmall.com
Topics: 0
Posts: 0
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Pulsdetektor Forums
Tech forums dealing with the various Pulsdetektor projects. German only, Click Here for a BabelFish English translation.
Topics: 0
Posts: 0
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Russian Metal Detecting forums
Lots of technical forums, but all in Russian. Click Here for a BabelFish English translation.
Topics: 0
Posts: 0
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0 | 0 |
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THunting.com
THunting.com is the former host for Geotech. These are general Treasure Hunting forums.
Topics: 1
Posts: 7
Last Post:
End of an era
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1 | 7 |
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LongRangeLocators.com
The world's largest forum dedicated to the discussion of LRLs and related devices.
Topics: 1
Posts: 2
Last Post:
What can they do?
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1 | 2 |
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There are currently 6766 users online. 88 members and 6678 guests.
Most users ever online was 87,796 at 08:10 AM on 03-19-2026.
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Hoping someone has a spare delta (4-pin) coil for the Tejon, Cibola, or Vaquero machines.
Depending on price, Willing to trade a complete, working Tesoro Siver Sabre from 84-85 with a solid round coil, or a working 1280x machine with an anderson shaft (made for an Excal) with a belt mount...05-22-2026, 05:15 PM -
Here is Coming..
https://www.youtube.com/watch?v=3VvZJwlcy-8 21 май 2026 г. Golden Mask
34 views 13 hours ago
cheap Hybrid from 10.06.202605-22-2026, 04:24 AM
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Hello all, I've been away for a while, getting back to detecting as I have found a few remote old gold mines here in AZ with apparently untouched mine dumps :^>
So, since White's is sadly no more and the MXT no longer made, I propose a project to make a detector as close as possible...04-09-2026, 07:55 PM -
.....well it looks like the next big gold finding detector is here.
https://www.minelab.com/gpz-8000
If it doesnt find gold you can always use the coil as a dunny seat in the bush if you get caught short.
02-26-2026, 10:36 PM -
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Hi all,
I'm starting a new long thread - a funny blog of my experiments, measurements, experience and findings - related all the good stuff in the thread topic.
The goal of this effort is:
- to have fun and entertain you
- to improve metal detection, GB, Disc, etc....12-29-2025, 01:31 PM -
Here is Coming..
https://www.youtube.com/watch?v=3VvZJwlcy-8 21 май 2026 г. Golden Mask
34 views 13 hours ago
cheap Hybrid from 10.06.202605-22-2026, 04:24 AM