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This website and its internal pages do not incorporate profiling cookies, but only technical ones, used to allow the correct counter working (Bravenet and Shinystat), not other IK1QFK, Renato Romero Home Page - Exploring ULF-ELF and VLF radio band www.vlf.it -------------------------------------------------------------------------------- WEB SITE SERVICES -------------------------------------------------------------------------------- RADIO NATURE, Reception and study of natural origin radio signals. By Renato Romero English version is available by RSGB www.rsgbshop.org -------------------------------------------------------------------------------- Visitors: Access since 01/09/1999. Click on the counter to view visitors data . Provided by http://www.bravenet.com PROMOTED SITES and ACTIVITIES VLF projects, aligned to OPEN-LAB rule LW RDF PROJECT By Manfred Kerckhoff (They are constantly updated) -------------------------------------------------------------------------------- Recommendation ITU-R V.431-8 (08/2015) Nomenclature of the frequency and wavelengh bands used in telecommunications (PDF 464 kB) -------------------------------------------------------------------------------- MOST RECENTLY PUBLISHED A simple and accurate audio marker generator By A. Vinassa and R. Romero (posted Oct.2023) *** VLF EXPERIENCES Azimuth localization of sferics/tweeks and visualization on polar map, by V. Cammelli. (posted Aug.2021) Reception of time and frequency reference signals in Lviv, Ukraine By Ihor Storozh. (posted Mar.2020) Albania earthquake in Nov.26, 2019 by R. Romero (posted Dec.2019) Tweeks/Sferics distance calculation By V. Cammelli (posted Nov.2018) 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) THEORY AND ITU LICENCES Design of High-Performance Magnetic Field Sensors for ELF – LF Signal Reception and Characterization by Evan Iverson (posted Nov.2012) Synergistic Living with the Geomagnetic Field by John Meloy (posted Jun.2012) 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) RECEPTION TECHNIQUES Recycling an old Smartphone... by M. Recchia (posted Jun.2019) *** DCF77 or MSF time delay J-M Polard & P. Newton (posted Feb.2019) Creative Sound Blaster X-Fi modification By M. Pernter (posted Apr.2018) From coaxial to optical fiber by P.Poggi (posted Dec.2014) The stealth antenna by P.Poggi (posted Oct.2014) Dual polarization, balanced, VLF antenna by P.Poggi (posted May.2014) A High Bandwidth, Low Noise Optical VLF Link by Mike Smith (posted Feb.2014) IDEALLOOP H301 - VLF loop receiver by L. Feletti and R. Romero (posted Jan.2014) Audio Antenna by Pierluigi Poggi (posted Jul.2013) New theory about the ELF- Ground Signals by Kurt Diedrich (posted Jun.2013) INSTALLATION OF TNU VLF RECEIVER by Le Minh Tan and TNU VLF group Tay Nguyen university (posted Feb.2013) Measuring around 50 Hz by Luca Feletti (posted Jun.2012) A very simple VLF Pocket receiver By Wilfried Fritz (posted Apr.2012) INDUCTION COIL ICS101 By R.Romero (posted Nov. 2011) A 0.1 to 40 Hz SENSING, CONDITIONING AND RECORDING SYSTEM: Part 1/3 : the loop and the pre-amplifier Part 2/3 : the signal conditioner Part 3/3 : the recorder By Serge Lacôte (posted Jan.2012) EXPLORER E202 - VLF portable receiver By Renato Romero (posted Dec. 2010) THE B3CKS VLF - ANTENNA PROJECT by Torsten Heer (posted Sept '10) 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) 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) VLF Openlab Observatories LIVE DATA VLF MONITORING STATION CMN - CUMIANA-IT, by R. Romero (Active) ERO- ETNA Volcano-IT, by E.R.O. Team (Active) RMG - ROMAGNA-IT, by F. Scremin (Active) IRA - NORTHERN CROSS RADIO Telescope-IT , by CIPH/ICPH, IRA-INAF (Active) VIRGO-IT, by E. G. O. Team (Active) SOS-ENATTOS mine-IT, by E. G. O. Team (Active) LANDES-F, by J. M. Brieussel & M. Brunel (Act.) LRN-Laurentian Univ.-CA, by K. Saroka (Active) Monitoring Network OVERVIEW (Active) # CURRENTLY NOT ACTIVE PNT - PONTESE Dew-IT, by CSP (no longer active) LANDES-South West France monitoring station, by J. M. Brieussel & M. Brunel. (May.2021) *** SOS ENATTOS ELF monitoring station located in Sardinina mine. by E.G.O., European Gravitational Observatory. (Apr.2021) How to start up a VLF observatory By R. Romero How to put a VLF observatory on-line By R. Romero Create your own streaming VLF Audio program By R. Romero OPERA 2015 Radio-seismic Emission Permanent Observatory By R.Romero (ended in August 2016) SIGNALS GALLERY ELF PULSATIONS GALLERY - SRS Reception by F.Francione (posted Oct.2014) ELF - Ground Signals Gallery by Kurt Diedrich (posted Jul.2013) 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) 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) ULF & ELF EXPERIENCES Underground Reception of Sch. Resonances by Sven Nordin (posted Sept.2013) The Schumann's symphonies by Pierluigi Poggi (posted Jul.2013) 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) LARGE INDUCTION COIL for ULF monitoring By M. Bruna (Oct'06) UNKNOWN ELF-SIGNALS and GROUND CURRENTS by Kurt Diedrich (upd. Oct 2003 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) All the material of this web site can be reproduced, only for not commercial use, indicating the source (except where a Copyright owner is indicated)