| - Guest article
- VHF and microwave propagation - characteristics of ducts
- Martin, A. L. (VK3KAQ)
- January 2007
 English, PDF, 1.7 MB)-
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- Use of satellite and aerial images to analyse double hop sporadic E radio links
- Dubus 4, p. 67-88, 2006
- (English, PDF, 1.6 MB) - note the correction which is explained here
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- Open letter to the chairman and to the chief executive of the Particle Physics and Astronomy Research Council (PPARC)
- May 2006
- (English, HTML, 44 KB)
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- Outcry of British scientists, closure of the UK ionosondes
- April 2006
- (English, HTML, 20 KB)
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- NAVSPASUR radar experiments
- April 2006
- (English, HTML, 100 KB
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- Improving vacuum tubes using pseudorandom symmetries
- Part 1 (introduction)
- Bode F. (DF1DM)
- Schreiber U. (DF1DM)
- Grassmann V. (DF5AI)
- April 2006
- (English, PDF, 100 KB)
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- Improving vacuum tubes using pseudorandom symmetries
- Part 2 (discussion of results)
- Grassmann V. (DF5AI)
- April 2006
- (English, HTML, 100 KB)
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- Hadley Cell Propagation - Discussion of results
- March 2006
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 , English, HTML, 100 KB)-
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- Hadley Cell Propagation - Analysing systematical features in tropospheric dx QSOs between 144 MHz and 5.8 GHz exceeding the distance of 3.000 kilometers
- February 2006
- (, English, PDF, 1.3 MB)
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- Dubus 1, 55-73, 2006 (the above article presented in the Dubus format)
- (, English, PDF, 1.7 MB)
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- Spotting large arrays @ Google Earth
- December 2005, last update January 2006
- (English, HTML, 676 KB)
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- Raising the treasure of dx cluster data
- Summary of the dxers' discussion in the email reflectors
- December 2005
- (English, HTML, embedded in the below DXC article)
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- Guest article:
- Predicting propagation on 2 & 6 meters
- Gyde, B., ZL3NE/1
- November 2005
- (English, PDF, 2.4 MB)
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- 144 MHz long distance radio propagation from western Europe into the Atlantic Ocean, analysis of tropospheric inversion layers and the atmospheric refraction index along radiowave propagation paths exceeding 3700 kilometers
- November 2005
- (, English, HTML, 352 KB)
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- Meteors in the sky
- August 2005
- (English, HTML, editorial)
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- a. More hints on thunderstorm effects on sporadic E
- b. Neue Hinweise auf Gewittereinflüsse auf die sporadische E-Schicht
- Dubus 3, p. 45-48, 2005
- (English/German, PDF, 212 KB)
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- The signature of the March 31, 2001 geomagnetic storm in Aurora dx communication on very high frequencies
- last update June 2005
- (, English, HTML, 868 KB)
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- Thunderstom effects on mid-latitude sporadic E?
- First results of a data analysis project in amateur radio
- Grassmann, V., DF5AI
- Cremer, S., DL1DBC
- CAL Mid-term Review and Science Meeting,
- Elounda, Crete, Greece, June 20-24, 2005
- (English, PowerPoint, 1.3 MB, including an animation of the June 27, 2004 event)
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- Thunderstorm effects on the ionosphere,
- discussion of results and the readers' feedback
- June 2005 (last update)
- (English, HTML, 2.1 MB including additional papers)
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- Geographical distribution of sporadic E and sferics on June 27, 2004
- Grassmann, V., DF5AI
- Cremer, S., DL1DBC
- May 2005
- (English, GIF animation, 304 KB)
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- a. Thunderstorm effects on the F region of the ionosphere
- b. Gewittereinflüsse auf die ionosphärische F-Region
- Dubus 2, p. 58-61, 2005
- (English/German, PDF, 232 KB)
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- Thunderstorm effects on sporadic E propagation in 144 MHz (version 2)
- April 2005
- (English, PDF, coloured and extended version, 1.3 MB)
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- a. Thunderstorm effects on sporadic E propagation in 144 MHz
- b. Gewittereinflüsse auf die Sporadisch-E Ausbreitung im 144 MHz Band
- Grassmann, V., DF5AI
- Cremer, S., DL1DBC
- Langenohl, U., DK5YA
- Munters, A., PE1NWL
- Sampol, G., EA6VQ
- Kraft, J., DL8HCZ
- Dubus 1, p. 9-44, 2005
- (English/German, b/w version, PDF, 1.2 MB)
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- Radar echoes from the sun
- April 2005
- (English, HTML, editorial)
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- Discussing the future of ham radio
- April 2005
- (English, HTML, editorial)
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- Airlifted VHF DXpeditions (AVDX)
- April 2005
- (English, HTML, 212 KB)
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- Can radio amateurs do something similar?
- April 2005
- (English, HTML, editorial)
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- Thunderstorm effects on sporadic E propagation in 144 MHz (v2)
- Update of the below article, additional information, coloured images
- April 2005
- (English, PDF, 1.3 MB)
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- What are you doing on August 12, 2028?
- February 2005
- (English, HTML, editorial)
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- Aurora and FAI analysis software
- February 2005
- (English, HTML, editorial)
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- Notes on the scatter properties of the lunar surface at radio wavelengths - the scattering area in moonbounce communication
- June 2004
- (English, HTML, 696 KB)
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- Guest article:
- 144 MHz transatlantic propagation considerations
- Obenhofer, W., NQ2O
- August 2004
- (English, PDF, 60 KB)
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- Guest article:
- Comparisons between Europe and North America
- Obenhofer, W., NQ2O
- July 2004
- (English, PDF, 64 KB)
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- Guest article:
- Radio propagation studies using radio beacons in 2004 and going forward
- Kayser, L., VA3LK
- July 2004
- (English, PDF, 48 KB)
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- There are good reasons for ham web sites and amateur radio magazines to cooperate ... but how?
- June 2004
- (English, HTML, editorial)
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- Spam messages disturbing the dx cluster spot lists
- May 2004
- (English, HTML, 104 KB)
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- A remarkable short distance Aurora QSO ... interpreted by long distance field-aligned backscatter
- May 2004
- (, English, HTML, 388 KB)
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- The Brendan trophies
- April 2004
- (English, HTML, editorial)
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- FAI on the edge, Northern Italy to Crete
- Dubus 1, p. 66, 2004
- (, English, PDF, 44 KB)
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- Geomagnetic storm from October/November 2003
- D and E region ionization measured by the EISCAT Svalbard radar
- December 2003
- (English, HTML, editorial)
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- Northern lights over Athens (November 20, 2003)
- December 2003
- (English, HTML, editorial)
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- Spam Protected Email Addresses (SPEA)
- December 2003
- (English, HTML, 110 KB)
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- FAI on the edge, Southern France to Madeira
- Dubus 4, p. 70, 2003
- (, English, PDF, 44 KB)
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