This practical handbook is a one-stop source for all sorts of shielding enclosures designed to prevent electromagnetic interference from reaching either a sensitive piece of equipment or an unauthorized agency. Includes: extensive supporting information on penetrations such as doors, vents, piping, and electromagnetic filters for each type of shielding; design checklists for shielded enclosure installation; performance specifications for various materials and structural components; methods for the testing necessary to prove performance; and so much more! Excellent illustrations. This is a "must have" if you are shielding RF. Softcover, 222 Pages, 1992.
Architectural EM Shielding Handbook (Cat. #A630)....................$110.00
The only of its kind! A very practical and easy to watch video guide to detecting and minimizing unwanted man-made EMFs. Includes step-by-step information on how to deal with electric blankets, water beds, computers, microwave transmitters, radar, and household wiring! Must watching for home buyers, electric sensitives, and anyone concerned about EMFs. 1994
Current Switch Video (Cat. #A610)....................$29.95
In this book, internationally respected EMF measurement expert Hubert Trzaska discusses the specific problems of EMF measurements in the often confusing near field and the main factors limiting measurement accuracy. Book describes methods that provide accurate data to aid the development of new, improved standards. Measuring methods are examined for electric fields and magnetic fields; measurement discussions include power density and photonic EMF measurements. 232 pages, 2001
EMF Measurement in the Near Field (Cat. #A538)
.............. $75.00
Discusses the sources and limitations of the many approximations, guidelines, models, and rules-of-thumb used in shielding applications. Presents the material in a question-and-answer format that gets straight to the heart of each topic. Demystifies shielding in practical language. 336 pages, 2005
Electromagnetic Shielding (Cat. #A572)
. $99.95
NIST Report #3, on paper (Cat. #A555) ............................... $20.00
NIST Report #3, PDF file on CD-ROM (Cat. #A555-CD) ... $10.00
GROUNDING & SHIELDING TECHNIQUES4th Edition
by Ralph Morrison
As the name implies, this is a "how-to" treatise on the various methods to reduce electric, magnetic and radiofrequency fields. Has a great beginning which explains the scientific basics of electric and magnetic fields (some of the best descriptions of terms such as permeability, ground plane, ferrites, and hysteresis that we have seen). Includes whole chapters on electric shielding, magnetic shielding, shielding in circuits, considerations for isolation transformers and utility power, and high frequency shielding. Some math is inevitable so this is not for beginners, but this book focuses more on how to design the circuit or fabricate the shield to achieve results. 1998 200 pages.
Grounding & Shielding Techniques (Cat. #A624) ......... $98.50
by Steven Scott & Kenneth Pellman A charming and useful book explains how to cook and store food, pump water, wash clothes and even run farms and business- all without electricity. Want to know how to light a room? Keep warm? Communicate without a phone? Find some obvious and not so obvious answers to these and many more questions. Based on the non-electric and practical lifestyles of the Amish. 128 pp. 1990
Living Without Electricity (Cat. #A691) ........ $7.95
Could have been called: "What to Do with Your New Gaussmeter". A general introduction to the measurement of magnetic fields in home and work environments. Explains in detail how to use a gaussmeter; gives hints about measuring fields in homes, schools, and offices; and offers useful background information on risks, mitigation, and magnetic fields. A great manual to accompany any gaussmeter purchase. 1993
Magnetic Field Guide (Cat. #A5302) ........................ $12.50
Many people want to know how EMF readings in their home compare to fields found in other homes or workplaces. Knowing this may help you decide if your situation is unusual. Making measurements may help you develop some simple strategies to avoid some fields. Discusses what fields are, where they come from, comparisons of findings in various home and workplace settings, and a little about what is know about health risks. Useful reading for any gaussmeter user, but biased toward the idea that EMFs are not a problem. 1992
Measuring Power-Freq. Fields (Cat. #A516) ................... $4.95
Are you keeping safe? Electrical wiring and appliances, overhead power lines, machinery, photocopiers, mobiles and cordless telephones, radio masts, TVs, tube trains, x-rays and laser beams are amongst the hundreds of everyday items that are now known to give off high levels of microwave radiation. Electromagnetic fields (EMFs) can be biologically active and capable of making changes to the structure of human and animal cells which are exposed to them. Long-term exposure is believed by an increasing number of scientists and environmentalists to be connected to tumors, fertility problems, behavior and mood changes, concentration and memory loss, and also to affect melatonin production and impair our immune system repair mechanisms. The Powerwatch Handbook is a simple no-nonsense guide to EMFs and how to reduce their harmful effect. Here is practical information on:
The Powerwatch Handbook (Cat. #A545) ........... $31.59
A book to help you chose and properly install the correct antenna to pull signals out of the air. The Right Antenna provides easy-to-understand information on a wide variety of antennas. It explains how antennas work and breaks them into TV and FM for discussion. A separate chapter is devoted to interference, and antennas used by hams for antenna band operation. The basic concepts of cellular telephone system operation are explained and the most popular antennas are discussed. Also includes chapters on DSS, satellite and TV amplifier antennas. A great how to book on selecting and installing antennas for entertainment and communication devices. Reg price: $24.95
The Right Antenna (Cat. #A557)
.. $19.95
THE SICK HOUSE SURVIVAL GUIDEby Angela Hobbs
Electricity as a pollutant? Curtains that make you sick?? More people suffer with electrical and chemical sensitivities from indoor pollution than we realize. This book has information on existing research into EMF's and the interaction of chemicals and hormones. It outlines a series of steps that readers can follow to identify and transform their sick house into a " Healthy Home". These include:
SILENCING THE FIELDSA Practical Guide to Reducing AC Magnetic Fields, improved 2nd editionby Ed Leeper PhD, updated 2007 Leeper (who worked with Dr. Wirtheimer in the 1970's on the ground breaking study linking EMFs with childhood cancer) has finally published his thoughts and experience dealing with electromagnetic fields. He covers in depth the concepts of net current, fields from water lines, building grounding and code violations, improper electrical wiring practices and how to correct them. Then he goes on to selecting an EMF meter, principles of practical magnetic shielding, considerations for fluorescent lighting, small appliances, radiant heating etc., etc. Written in casual language with ample illustrations. Clear enough for the patient layperson, and specific enough for the engineer or electrician. This is the PRACTICAL solutions book we have all been seeking. 340 pp, 2007
Silencing The Fields (Cat. #A547)
......................
.. $49.50
TRACING EMFs (Cat. #A530)....................$28.00
This DVD graphically explains how certain wiring errors create high magnetic fields. It shows step-by-step methods of measuring the fields and then how to find the faulty circuit and the wiring error. Created under a grant from California Health Services to help school electricians reduce the magnetic fields found in the state's schools during a 90-school magnetic field survey. Filmed by the video dept. of Southern California Edison and using their graphics animation to show how the currents move in misconnected circuits. Written and hosted by Karl Riley, author of Tracing EMFs in Building Wiring and Grounding. 23 minutes.
Tracing Magnetic Fields
DVD (Cat. #A531)
.. $19.95
Want to convert between mW/cmฒ and V/m? Need to know how many microTesla per milliGauss? What is a dB? These sheets are a handy reference for converting between Amps/meter, Volts/meter, Tesla, Gauss, and mW/cmฒ as well as understanding and using dB.
Unit Conversion Tables, Graphs & Formulae(Cat. #A694)
.. $2.50
 lessemf@lessemf.com
Copyright 1996-2008, Less EMF Inc. |
A Design & Specification Guide by Leland Hemming
How to Reduce or Eliminate Electromagnetic Pollution in the Home & Office by John & Trish Banta
by Hubert Trzaska
by Kenneth Kaiser
Laboratory studies of electromagnetic (EM) signal propagation through construction materials were carried out as part of the NIST initiative. In this report, power attenuation aspects are discussed. The materials investigated included brick, masonry block, eight different concrete mixes, glass, plywood, lumber (spruce-pine-fir), drywall, reinforced concrete, steel reinforcing bar grids, variations of the plywood and lumber tests in which the specimens were soaked with water, and composite specimens involving brick-faced masonry block and brick-faced concrete. For each material, varying thickness specimens were fabricated in order to measure attenuation as a function of penetration distance. Measurements of power loss were taken at 2 MHz intervals from 0.5 to 2 GHz and from 3 to 8 GHz. Frequency power spectra were discretely generated for each material as a function of thickness. Excellent tables and graphical data. Extremely useful for predicting the shielding effectiveness of common building materials. 200 pages, 1997. Order either printed version or electronic version on CD-ROM.
Simple Ways To Make You And Your Family Safer
By Alvis J Evans
A practical guide for reducing AC magnetic fields produced by building wiring and improper grounding practices. Step by step instructions for detecting wiring problems and a full description of common wiring errors and how to correct them. This guide is for anyone who wants to inspect their own home, electricians and electrical inspectors, those starting a new profession in EMF consulting, as well as those involved with the process of building construction such as architects and contractors. Utility personnel involved in EMF measurements can profit from this information. 96 pages, spiral bound book. Completely updated in 2005.
