Amateur Radio Propagation Studies


Science, research, engineering, operating


A variety of excellent amateur radio webpages is available on the Internet. The following list presents only a small number of selected amateur radio webpages. Please note in particular the recommended resources on the right hand site of the list.


Dx clusters & robots
Email reflectors & mailing lists
Special resources
Organisations & communities
Amateur radio magazines
Selected ham pages

Legal notes (Impressum)


The OH2AQ dx cluster
Comment: The OH2AQ dx cluster is my favourite one, but there are many others in the world. Dx clusters support radio operators and BeamFinder users by providing the latest dx information.
10m dx cluster:
6m dx cluster:
4m dx cluster:
2m dx cluster:
70cm dx cluster:
beacon summary report:
submission form:
Spot database:
The VHF/UHF DX Web Cluster from Japan
Comment: See the VHF dx activity in Asia. The second link refers to 50 MHz dx reports.
Send VHF&up formatted dx spots by EA6VQ *** recommended ***
Comment: PLEASE support this input format when sending your dx spots to the dx cluster.
The DX Robot by PE1NWL
Comment: Home of Allard's fine Aurora and Sporadic-E monitoring and alert services.

50 MHz reflector
Comment: This reflector deals with all aspects of the six meter band operation.
Ham-Macintosh reflector
Ham-Software reflector
EME reflector
Meteor-Scatter reflector
and others
Comment: Discussion and announcements concerning amateur radio moonbounce communication.
Aurora / FAI forum
Comment: This forum discusses anything relating to aurora, whether radio or visual.
Comment: The meeting point for hams interested in transequatorial radio propagation (TEP) on 144 MHz and above.

cq-DL (German)
CQ VHF (English)
Dubus (bilingual: German/English)
Funkamateur (German)
Funktelegramm (German)
QST (English)
Radio REF (French)
Six News (English)
UKW Berichte (German)
VHF Communication Magazine (English)

The ON4KST chat
Comment: This is actually my favourite chatroom where you may find many radio amateurs ready prepared to launch radio dx tests on all bands.
The VK logger
Comment: There is quite an active VHF scene in Australia.
DXers info
Comment: Here you may chat away with American fellow hams.

50 MHz Dot Com
Comment: Great web site from Brazil relating to 50 MHz dxing
Open directory, category VHF
Comment: If you can't find it there, it does not exist in the world of VHF dxing
The DX Zone, Radio Wave Propagation Resources
William Hepburn's VHF/UHF Tropospheric Ducting Forecast
Comment: This experimental forecast predicts VHF/UHF long-distance propagation by identifying potential ducting events in actual meteorological data. The results are updated daily at 17 UT.
Web-controllable communications receiver
Comment: This web site features a remote real-time signal strength plot so remote stations can check their signal strengths here any time of the day or night.  The receiver is located in Salt Lake City, Utah, USA.

Arbeitskreis Amateurfunk und Telekommunikation in der Schule e.V.
Comment: This organization promotes ham radio and telecommunication at schools by supporting various projects such as sferics registrations, paging, wx radio services etc.
Daily 144 MHz & Above Newsletter by G0NFA
Comment: Derek provides this excellent newletter on a daily basis (which also includes some 50 MHz news).
Human race
Comment: A television documentary series about amateur radio..
NCDXF/IARU International Beacon Network
Comment: The International Beacon Network can be considered one of the most amazing amateur radio projects in the world.
Propagation studies committee of the RSGB
Comment: This webpage provides a variety of articles and papers written by experts and experienced operators.
UK Six Meter Group
Comment: Visit this webpage if 6m is your favourite band.
Society of Amateur Radio Astronomers (SARA)
Comment: International community to learn, trade technical information and do their own observations of the radio sky.
The Radio JOVE project
Comment: Radio JOVE students and amateur scientists observe and analyse natural radio emissions of Jupiter and the sun.
VK - VHF FM DX Group
Comment: This site caters the interests of Australian amateur radio
operators who are interested in 'long haul' FM DX work. It in particular
provides information on tropospheric ducting and stunning photographs
of visual inversion phenomena.

Darrel Emerson's home page, AA7FV/G3SYS
Comment: This web site was last updated April 21, 2000, and some of its links are broken, unfortunately. However, Darrel is a professional radio astronomer and provides lots of quality information.
AE4TM's HF propagation study
Comment: A wealth of information on hf radio propagation and measurements of the propagation delay times using PACTOR.
HF Backscatter from Travelling Ionospheric Disturbances identified with Pactor-II by AE4TM *** excellent ***
Comment: Report on a longterm statistical collection of shortwave backscatter.
Sferics - Entstehung, Beobachtung und Messung by DC3MF
Comment: Introductional article in sferics and ELF/ULF radio propagation.
Moon images from the NavSpaSur CW radar system by DF6NM *** excellent ***
Comment: Time-Doppler spectrum analysis of radar moon echoes.
The DK5YA VHF-Page *** excellent ***
Comment: This webpage is permanently maintained and provides lots of information relevant for the VHF operator - it is a must for serious VHF dxers.
SAM - Simple Aurora Monitor,
Amateur Magnetometer Network by DL3HRT and DG3DA *** excellent ***
Comment: Karsten and Dirk designed a magnetometer construction kit allowing measurements of Earth magnetic field variations.
DXpeditions by DL8EBW
Comment: Do you wish to know latest information on dxpeditions? This is your page then.
Sporadic-E cloud evolution by EA6VQ
Comment: See Gabrial's animated analyses of recent Sporadic-E openings.
G3CWI's Radio Adventures *** excellent ***
Comment: Richard provides experimental ionospheric research in ham radio par excellence - look at it. (chirp sounding) (Doppler radar) (Pedersen Ray Doppler Plots)
The G3PLX Chirp Project by ZL1BPU *** excellent ***
Comment: Passive measurements of HF range and propagation using ionospheric sounders.
The detection of Sporadic E, Aurora and Meteors by using Radio Spectrum Analysis by G7IZU
Comment: FFT plots of band 1 TV transmitters during the Quadrantids meteor shower 2004 and various Aurora openings.
Dave's place by G7RAU
Comment: Find Dave's software tools for propagation realtime analyses.
Radio waves below 22 kHz by IK1QFK
Comment: This unusual web site explores the radio world below 22 kHz by providing a wealth of information, observation reports and other subjects in ULF/ELF and VLF propagation.
K3PGP Experimenter's Corner
Comment: Lots of information on lunar radio echoes, long-delayed radio echoes on EME circuits, lunar laser ranging and other EME topics which will certainly attract your interest.
N1BUG web
Comment: Provides sections on VHF and above radio wave propagation, including educational material and a realtime Aurora monitoring page. (polarisation of EME signals)
Aurora Opening of 15-16 July 2000 by NA3T
Comment: The analysis of amateur radio VHF and UHF logs is Joe's attempt to show that logs of contests and openings should be routinely analysed.
Meteor Scatter Obs with VHF Radio & Computer by OH5IY
Comment: Covers all aspects of meteor-scatter propagation and provides a large amount of information and data.
Radio in Observing Auroras, Radio & Auroras by OH5IY
Comment: Explains types of radio Auroras, Auroral back scatter and Ilkka's computer-controlled registration of the SK4MPI beacon.
MUF does not apply with Es prop. reports, MOF does! by OH5IY
Comment: Discusses the meaning of maximum-usable-frequency (MUF) and maximum-observed-frequency (MOF).
Common definition for amateur radio MS terminology on "pings" and "bursts" accepted in IARU Region 1 meeting Lillehammer, September 1999 by OH5IY
Comment: Read Illka's (OH5YI) and Jukka's (OH6DD) proposal for scientific analyses on amateur radio meteor scatter.
Online HF Propagation Prediction by ON4BAA
Comment: Four steps towards realtime HF propagation forecasting including lots of valuable links to alternative sources.
Ionoscatter on 50 and 144 MHz by OZ1RH
Comment: Lecture which examines dx opportunities in the so-called ionoscatter radio propagation.
see also:
NAVSPASUR Moonreflection Experiment by PE1ITR *** excellent ***
Comment: Reception of the 217 MHz NAVSPASUR radar, U.S.A., in the Netherlands by using reflection by the lunar surface.
Transatlantic QSO on LF completed by VA3LK
Comment: Larry (VA3LK) and Laurie (G3AQC) managed to complete a very special CW QSO: it began on Febuary 5 and was completed on Febuary 19, 2001, they did not listen to the signals but used a visual adaption - this was a transatlantic QSO on low frequency, i.e. 137 kHz.
Canadian Magnetic Observatories by VE6WZ
Comment: Dynamic collection of various magnetometer data.
Boxing Day 2003 Duct Report by VK2KRR
Comment: Leigh drew my attention to his remarkable 144 MHz FM QSOs covering a distance of more than 2.800 kilometers in Australia.
EME, SETI, Radio Astronomy, DSP and Radio Amateurs by W6/PA0ZN
Comment: This web site builds bridges between EME, SETI and amateur radio astronomy.
Meteors, MS, HSMS, Computers and Amateur Radio by W6/PA0ZN
Comment: Great site for the high-speed cw enthusiast and for digital signal processing.
SM5BSZ - Aurora Echoes With Narrow Band Radar *** excellent ***
Comment: This article discusses one of the most remarkable Aurora experiments in amateur radio, i.e. radar applications in E-region backscatter.
SM5BSZ - Signals received with the SM5FRH antenna *** excellent ***
Comment: See this amazing recordings which display a large number of EME stations qso-ing in a 90 kHz segment during the ARRL EME contest, 2001.