General electronics :
- CYROB : Philippe Demerliac website, electronics & mecanics (french)
- ELECTRO-BIDOUILLEUR, french speaking electronics community
- SONELEC, lots of electonics ressources (in french)

Antennas :
- F5AD antennas descriptions collection
- Design of Internal FM Radio Antenna for Mobile Terminal

Radio electronics related :
- Microphone connection database
- PA3AKE H-Mode Mixer Frontend
- PA3FWM Physics, SDR & Radio electronics
- K8IQY Recycle LT1253 video amp into DDS generator preamplifier

Vintage computing :
- A/UX Penelope

ShortWave listening [SWLing] :
- Broadcast schedule
- Priyom, Number stations schedule & infos
- Twente Web SDR
- Propagation prediction tools

Miscellaneous :
- Discret11 80' French TV encryption system (FABIEN SANGLARD'S WEBSITE)

Friends :
-  ARAM95 (Association des radioamateurs du Val d'Oise) 
-  ADRASEC95 (Association des radioamateurs au service de la sécurité civile Val d'Oise)