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Low Frequency

LWCA Longwave Home Page
Promotes both DXing and experimenting on frequencies below 550 kHz and activity
on the 1750 meter band.

Butterworth Low-Pass Filter
Design of a 5th order Butterworth LP filter using Sallen-Key circuit design.

OST Annual Report Section 18
OST annual report section.

Radiation Health and Safety Consulting
Specialist in non-ionizing radiation health and safety. Offers assessment of
electromagnetic field exposure as well as teaching, research and consulting.

CNN - Is spreading sonar smart science or overkill? - July 2, 1999
[CNN]

Heffernan et al.
Michael Heffernan, Ph.D.

ETF Acoustic Measurement Software
Design and supply pc based acoustic measurement system designed to meet the needs
of both hi fi enthusiasts and professionals using standard pc sound cards.

low frequency friends
Tuning community met foto's, links en meetings.

Definition of acoustics
Glossary of terms related to acoustics.

SP McGreevy's ground-based ELF-VLF recordings, 1991 - 1998
Earth's natural electromagnetic radio transmissions.

ELF/VLF Radio Atmospherics and Sprites
HIgh altitude sprites and jets. Spectrograms and RF data.

North Country Radio Home Page
Kits, including transmitters and receivers. Technical articles and information
on electronic subjects geared towards ham radio, shortwave and video projects.

_Power & Light Productions Home Page
Loudspeakers and components. CA.

Interfacing Piezo Film to Electronics
A properly designed interface circuit plays a key role in various piezo film
applications. As the applications of piezo film spans from toys to military sensors ...

Characterization of ceramic coatings with large-aperture low ...
Pentti Kauppinen, Harri Jeskanen and Jorma Pitkänen VTT Manufacturing Technology
FINLAND (NDT-net)

Unclassified/Commerical Mind Control Technology
Unclassified/commercial mind control technology.

Low Frequency - [ Web Site Design, Interface Design, Flash Design ...
Offering design using HTML, DHTML, ASP, Flash, CSS, Javascript, and custom logos
and banners. Located in Virginia, United States.

RADIO WAVES below 22 kHz
L'affascinante mondo delle radiofrequenze sotto la soglia delle Lf (low frequencies).
Studi sulla propagazione e la strumentazione necessaria per riceverle.

CNN - Low-frequency sonar raises whale advocates' hackles - June ...
[CNN]

 

 

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