LAST POSTED *WISTLERS GALLERY by Dave Ewer (posted Jun '10) *** *RISERS AND CHORUS GALLERY by Dave Ewer (posted Jun '10) *** *CHORUS GALLERY by D. Ewer (posted Jun '10) *** *Signals in the ELF-Range ,Part III-1 by K.Diedrich, F.-P. Zantis (posted Jun '10) *** *Signals in the ELF-Range, Part III-2, by K. Diedrich, F.-P. Zantis (posted Jun '10) *** * On the potential meteors ELF/VLF radiations - Perseids 2009 campaign  by J.L.Rault (posted on Nov.09) ***

* SAQ Commemorative transmissions 
by Claudio Parmigiani, IZ2FER (posted Jan 08)

* LUMINOUS PHENOMENA IN THE HESSDALEN VALLEY AND VLF EMISSIONS by R. Romero and J. Monari(upd. Nov. 2005) 

* EARTHQUAKE PRECURSORS By Dionysios Dimakos(Upd. Apr2004)

*THE REMOTE CONTROL FREQUENCIES by Jean Marie POLARD  (upd Nov 2003)

* VLF at Home By C. Parmigiani (upd Oct 2002)

* Reception of (strange) VLF  signals  with a PC,  By Harald Lutz (upd Nov 2001)

* SEISMIC RADIO EMISSIONS, By R. Romero (upd Dec 2001)

* When signals don't arrive from too far away (see: the false receptions) By R. Romero, (upd. 25/08/00)

* VLF monitoring of 18/11/99 Leonid METEORS By R. Romero, (upd. 19/01/00)

* O.Pe.Ra., Permanent Observatory on Natural Radio Emissions By R. Romero, (upd. 19/01/00)

* Last INSPIRE mission of MIR, NASA-INSPIRE Project By R. Romero, (upd. 05/12/99)

 * Active and passive systems By R. Romero, (upd. 26/07/99)

* UNATTENDED OPERATIONS, When the station work automatically By R. Romero, (upd. 22/10/99)

PROMOTED  SITES and ACTIVITIES They deepen VLF projects, aligned to OPEN-LAB rule LIVE DATA 1,  from IK1QFK monitoring st., by R. Romero LIVE DATA 2,  from IT9ZUK by A. Longo TEMP. OOS LIVE DATA 3, from Pontese Dew monitoring st., by CSP  Lightning Radar Project by  Daniel / ON4LDZ ALTAIR By William Ernest Payne VLF RADIO RESEARCH By Peter Schmalkoke  LW RDF PROJECT By Manfred Kerckhoff  (They are constantly updated)

* UPGRADING RECORDING METHODS by Dave EWER  (posted on Apr. 08)

*NOTES ON “DIMENSIONING A MINIMAL ELECTRICAL FIELD RECEIVER FOR ELF/ULF BANDS” By Andrea Dell’Immagine IW5BHY (posted Jan 08)

*Characterization and use of a Minimal Loop in RDF Automatic Monitoring Stations By Renato Romero (nov.07)

*IN SEARCH OF THE SCHUMANN RESONANCES By C. Re (Jul 06)

*SPECTRUM 1 VLF RECEIVER  By D. Ewer (Jul 06)

* "ADA", AN ACTIVE DIFFERENTIAL ANTENNA FOR 5Hz – 500 Khz, By  Claudio Re (upd. Nov. 2005)

*A MINIMAL ELF LOOP RECEIVER  By R. Romero (upd. Sept. 2005)

*CHARACTERISTIC OF UNEXPLAINED GROUND ELF SIGNALS By K. Diedrich & F.P. Zantis (Upd. Jun 2005)

* FLOATING SOLAR RECEIVER By Renato Romero (Upd. Jun 2004)

* HOW DOES AN EARTH DIPOLE WORK? By Renato Romero (upd.Mar2004)

*RDF EARTH MONITORING by Renato Romero  (upd Dic 2003)

*UNKNOWN ELF-SIGNALS and GROUND CURRENTS  by Kurt Diedrich (upd. Oct 2003)

* VLF TUBE RECEIVER by Giuseppe Accardo and Alan Scremin (upd Aug 2003)

* THE LOCK IN MODULATION IN ULTRA LOW FREQUENCY APPLICATION by A. Ghedi (upd May 2003)

* Noise suppression on a PC  by Tomislav Stimac and Berislav Bracun (upd Jan 2003)

* XSP "X Signal Prædactor" Receiver Front-end By G. Seleri (upd Aug 2002)

* VLF antenna "BIKELOOP"
By R. & C. Parmigiani , G. Seleri (upd May 2002)

* STORM MONITOR, by Russell E. Clift,  AB7IF (upd oct 2001)

* MAGNETIC ANTENNAE FOR ULF, By Hans Michlmayr (upd. Jun 2001)

*RDF SOFTWARE, WITH A FIXED LOOP By R. Romero (upd. May 2001)

*GOING LOW IN FREQUENCY WITH LOOP ANTENNAS By P. Schmalkoke (upd May 2001)

* AN EASY VLF LOOP, 200Hz-20kHz reception without transformers  By R. Romero & M. Bruno, (upd. Dic.2000)

* Mobile Stereo NATURAL RADIO 2, Another approach to Natural RadioBy D. Ewer, (upd. 18/06/00)

* Mobile Stereo NATURAL RADIO, part 1 By D. Ewer, (upd. 07/05/00)

* The use of Low noise OP AMP By M. Bruno, (upd. 24/02/00)

* RDF Earth Dipole RECEPTION GALLERY  by Renato Romero (upd. Jan 2004)

* UNEXPLAINED ULF-ELF SIGNALS GALLERY n°3 By R. Romero, (upd. 09/10/00)

* UNEXPLAINED ULF-ELF SIGNALS GALLERY n°2 By R. Romero, (upd. 07/05/00)

* FREE TOPIC COLLABORATIONS STORE n°1 Various, (upd. 28/03/00)

* Wide band listening, 2Hz-22kHz, NATURE RADIO By R. Romero, (upd. 26/07/99)

* UNEXPLAINED ULF-ELF SIGNALS GALLERY n°1 By R. Romero, (upd. 26/07/99)
 
 

THEORY AND ITU LICENCES

*SIMPLE EARTH-IONOSPHERE WAVEGUIDE CALCULATION  By Thierry Alves  (upd Oct 2003)

* On the possible origin, propagation and detectability of ELECTROMAGNETIC PRECURSORS OF EARTHQUAKES  by E. R. Mognaschi (upd Apr 2003)

* What and Where is the Natural Noise Floor?  By John Meloy (upd Jan 2003)

* FFT for dummies By R. Romero (upd Oct 2002)

* Receiving Loop Theory By William E. Payne (upd Oct. 2002)

* ELF and VLF frequency Guide, By. Jacobsen ( upd Nov 2001)

* EXPERIMENTS ON RADIO DIRECTION FINDING with an ORTHOLOOP, By Vittorio De Tomasi (upd Jul 2001)

* MULTIDIMENSIONAL EM field analysis and representation, By Peter Schmalkoke (upd. Jun 2001)

* THINKING ABOUT IDEAL LOOPS  By M. Bruno, (upd. Feb.2001)

* THE RUSSIAN VLF TIME-SIGNAL STATIONS “BETA” By T. Jacobsen, (upd. 04/12/00)

* THE RUSSIAN VLF NAVAID SYSTEM, ALPHA, RSDN-20 By T. Jacobsen, (upd. 20/07//00)

* STATIONS, ITU lic. and services below 22 kHz  By R. Warnett & others, (upd. 24/02/00)

* RADIO SIGNALS OF NATURAL ORIGIN, Theory By R. Romero (upd. 31/12/99)
 
 
 

ULF & ELF EXPERIENCES

*LARGE INDUCTION COIL for ULF monitoring By M. Bruna (Oct'06)

* Frozen Lightnings By C. Parmigiani , (upd Aug 2002)

* ZEVS, THE RUSSIAN 82 Hz ELF TRANSMITTER  By T. Jacobsen, (upd. Gen.2001)

* RECEPTION of SUBMARINE communication systems By R. Romero & V. Lehtoranta, (upd. 22/11/99)