New Metal Detector Book!

[Qiaozhi]

Carl and I are proud to announce that we have successfully completed the writing of a technical book on metal detector technology.

This is the first in-depth book on this subject since 1927; and it feels like we've been working on it for that long! Countless hours have gone into the production of this book, not only writing, but building and testing the many projects, sometimes multiple times.

Inside the METAL DETECTOR

ISBN 978-0-9858342-0-3
Publication date: September 2012
300 pages

$34.95 - available directly from Geotech.

Here is the Table of Contents to whet your appetite:

Introduction

Chapter 1: History of the Metal Detector
The People
The Applications
The Companies

Chapter 2: The BFO Principle

Chapter 3: Designing a BFO Detector
Reference Oscillator Design
Search Oscillator Design
Mixer and Detector Design
Headphone Amplifier
The Complete BFO Detector
Using Oscillator Harmonics
Construction Details

Chapter 4: A Simple Probe That Works!
Search Oscillator
Automatic Tracking Circuit
Construction Details

Chapter 5: Induction & Coils
Magnetic Fields
Induction
Induction Balance
Eddy Currents
Search Coils
Mineralization Effects

Chapter 6: Principles of Induction Balance
Transmit Frequency
What the Experts Say
So What's Best?
Power Supply
Evaluation of Initial Design Decisions

Chapter 7: Target Discrimination
Phase Demodulation
Motion Versus Non-motion
Discrimination With an Analog Detector

Chapter 8: Transmit-Receive Detector
Transmit Oscillator
RX Amplifier
Audio Output
Power Supply
Testing
Construction Details

Chapter 9: Designing an IB Detector
Aconyms
Stabilized Power Supply
Transmit Oscillator
Receiver Preamp
Designing a VLF IB Detector with GEB
GEB and DISC sampling
CMOS Analog Switches
Motion Mode of Detection
Audio Oscillator, Chopper and Amplifier
A Little More Info On Discrimination
Automatic Battery Check Circuit
Battery Pack
The Completed Prototype
Initial Setup Procedure
Real World Testing
But Can We Do Better?
Improving the Design
Comparator Operation
Detector Calibration
Real World Testing (again)
In Conclusion
Construction Details

Chapter 10: IB Coil Experiments
Experiment #1: MD-3030 10" Concentric Coil
Experiment #2: Fisher M-scope 11" Concentric Coil
Experiment #3: Garrett Crossfire 8" Concentric Coil
Experiment #4: Troy 9" Concentric Coil
Experiment #5: Viking 6DX Double-D Coil
Constructing Homemade IB Coils
Double-D Coil Experiment
Double-O Coil Experiment
Concentric Coil Experiment
Omega Coil Experiment
Conclusion
Step-by-Step Instructions for Constructing a DD Coil

Chapter 11: Pulse Induction Principles
PI Transmit
PI Front End
Sampling
Digging in Deeper

Chapter 12: Pulse Induction Designs
PI Design 1
PI Design 2
PI Design 3
PI Design 4
Bonus: PI Design 5
Advanced Topics
Power Supply
Preamp
Sampling
Ground Balance
Coils
Really Advanced Topics
Construction Details --- PI-1
Construction Details --- PI-2
Construction Details --- PI-3
Construction Details --- PI-4

Chapter 13: Long Range Locators
Dowsing
History
Reactions
Why Dowsing "Works"
Dowsing Tests
Empirical Results
Summary
LRLs
"Passive" LRLs
"Active" LRLs
MFD Theory
Summary
Treasure Auras
Photographing Treasure Auras

Chapter 14: Pistol Detector
Ferrite Receiver
TX Circuit
The Sky and Compass Effects
Detecting the Anomaly
The Front Panel Controls
TR Mode of Operation
Nulling the Ferrite Coil
But Does it Actually Work?
Meaning of TOTeM
Construction Details
Conclusion

Chapter 15: Loose Ends
Multi-frequency Design
Myths & Fallacies
Is it an antenna?
The Halo Effect
Metal or Plastic Stem Bolt?
Electrostatic Shielding
Power Output
Coil Sensitivity
The Concentric Ring Experiment
Component Marking Standard
Electromagnetic Terminology
PC Boards

Appendix A: Air-Cored Coil Calculator
The Visual Basic Version
The Tcl/TK Version
The Javascript version
Accuracy

Appendix B: Resources
Web Sites
Books
Magazine Articles
Patents

Index

[aft_72005]

Hi Qiaozhi
As I read in introduction, seem it is complete book .
My congratulation to you and carl .
Best regards

[Geo]

Hi Qiaozhi.
Will you sell it in electronic format??? It is better because we can use translator for unknown words.
Congratulation to u and to Carl

[Barbarossa]

very good work.congratulations

[Goldmaxx]

Hi Qiaozhi
my congratulation to you and Carl. The book looks very good and is certainly very interesting.
The book is a great work. I would buy the book very much.
I live in Germany and would like to know if I can order it somewhere in Iternet, or can I the book directly order from you?

sorry for my bad english.

Best regards

[Qiaozhi]

Ordering instructions for the UK, Europe and surrounding countries:

UK - the total cost will be £24, which includes the book + P&P.
Delivery should take around 3 days.

Europe - the cost will be £28, which includes the book + P&P.
Delivery should take around 5 days.

Non-European countries - please ask for a price, although in most cases it will be the same cost as Europe.

I am currently waiting delivery of 100 padded jiffy bags. When these arrive, the books will be dispatched.

Paypal to qiaozhi@geotech1.com

For the Americas, Asia and Oz, Paypal to carl@geotech1.com. Shipping is a flat $4 in the US, for anywhere else the cost of shipping will need to be calculated, and it may be pricey because postal rates have gone into orbit.

When you purchase by Paypal, your delivery address is automatically sent, so the ordering process should be very straightforward.

In the near future Carl will be moving the book ordering information to a dedicated area on Geotech.

[Qiaozhi]

Hi Qiaozhi.
Will you sell it in electronic format??? It is better because we can use translator for unknown words.
Congratulation to u and to Carl

There are no plans to offer the book in electronic format. It's just too open to abuse.
Sorry.

If you purchase the book and then find some of the words difficult, you only have to ask here on the forum. We will be pleased to help.

[Qiaozhi]

Hi Qiaozhi
my congratulation to you and Carl. The book looks very good and is certainly very interesting.
The book is a great work. I would buy the book very much.
I live in Germany and would like to know if I can order it somewhere in Iternet, or can I the book directly order from you?

sorry for my bad english.

Best regards

Please see the ordering information (previous post).
It will be £28 for Germany, which includes the book + P&P.

To order by Paypal:

1. Log in to Paypal
2. Select "Send Money"
3. Enter email: qiaozhi@geotech1.com
4. Enter amount: 28
5. In pull-down box, select "GBP - British Pounds"
6. Select "Purchase" tab
7. Tick the "Goods" radio button
8. Select "Continue", etc.

[Geo]

Qiaozhi be sure for the p&p to Greece and tell me. Maybe post to Greece to be more expensive.


btw... the book has any biography and photo from you????

[Qiaozhi]

Qiaozhi be sure for the p&p to Greece and tell me. Maybe post to Greece to be more expensive.


btw... the book has any biography and photo from you????

The cost is the same as for Europe, as I don't think you've quit the European Union just yet.
So the total cost is £28, which includes the book + P&P.

No biography from either Carl or myself. The technical stuff took up all the available space. Anyway, it's about metal detecting technology, not about us.

[Geo]

The cost is the same as for Europe, as I don't think you've quit the European Union just yet.
So the total cost is £28, which includes the book + P&P.

No biography from either Carl or myself. The technical stuff took up all the available space. Anyway, it's about metal detecting technology, not about us.

Yes, but always the readers want to learn about the authors!!!!
Anyway i ordered the book so now is your job ..

Regards

[Qiaozhi]

Yes, but always the readers want to learn about the authors!!!!
Anyway i ordered the book so now is your job ..

Regards

Thanks Geo!
When the packaging arrives I will dispatch the book immediately and let you know it's on its way.

[Geo]

Thanks Geo!
When the packaging arrives I will dispatch the book immediately and let you know it's on its way.

Hi Qiaozhi.
Thanks for all, i would highly appreciate if there was in the book a very brief biography of George Overton .
I am sure that this book is a kind of encyclopedia on metal detectors although i am not sure what writes about pistol detector.

My Regards

[Qiaozhi]

Hi Qiaozhi.
Thanks for all, i would highly appreciate if there was in the book a very brief biography of George Overton .
I am sure that this book is a kind of encyclopedia on metal detectors although i am not sure what writes about pistol detector.

My Regards

Wait and see ...

[Goldmaxx]

Hi Qiaozhi

Many thanks for the ordering instructions.
I'll order the book quickly.

Best regards