Derniers articles
Antennes-relais : la victoire des «marchands de peur»
Par Mathieu Laine 06/02/2009 Mathieu Laine, avocat. (DR) Pour l'avocat, le principe de précaution invoqué par la justice pour démonter une antenne-relais n'est fondé ni juridiquement ni...
Solar update 07/02/2009
We still have had no hint of sunspots or sunspots to come, though there was some geomagnetic activity on February 4 from a possible coronal mass ejection, raising the planetary A index to 16 that...
ARRL Executive Committee issues mobile amateur radio operation policy statement
On January 30, at the instruction of the Board of Directors at its January 2009 meeting, the ARRL Executive Committee adopted a policy statement on mobile Amateur Radio operations. The statement...
Alinco announce 144/430/1240 MHz handheld
Alinco have announced a new FM Full-Duplex handheld for the Amateur Radio 2 metre, 70cm and 23cm bands. The new Tri-band handheld puts out 5 watts on 144, 4.5 watts on 430 and 1 watt on 1240 MHz....
Google Mars 3D
La NASA et Google ont annoncé lundi la nouvelle version version du module d'exploration de la Mars dans Google Earth qui permet à tous les ordinateurs de bureau une vue en haute résolution et...
Russian dx contest 2008
here are next records for callsign ON7IC: Year Entry Place World Claimed Score Final Score Penalti % Cross Check % Unics QSOs Pts Mults Total QSOs Pts Mults Total 2008 SOAB-SSB 83 39 226 16+10 5876...
50 MHz now available in Sweden
Swedish Radio Amateurs now have access to the 50-52 MHz band with a power output limit of 200 watts and will get access to 7.1-7.2 MHz with 1 kW output from 1st April. Previously access to 50 MHz...
Solar update 30/01/09
On Tuesday, January 27, we saw another one of those "almost-a-sunspot" emerge in the Sun's low latitude, so it was probably an old Solar Cycle 23 spot; it was gone the next day. Sunspot numbers for...
The Sun, the Earth, the Ionosphere: What the Numbers Mean, and Propagation Predictions--a brief introduction to propagation and the major factors affecting it.
By Carl Luetzelschwab, K9LA The sun emits electromagnetic radiation and matter as a consequence of the nuclear fusion process. Electromagnetic radiation at wavelengths of 100 to 1000 Angstroms...
Une puce shf 60 GHz pour remplacer le hdmi
Samedi 24 janvier 2009 Source: Georgia Tech L’institut des technologies de Georgie aux États-Unis vient de présenter une puce capable de transmettre des ondes radio à 60 GHz, permettant, par...