SIGNAL IDENTIFICATION GUIDE (SigIDWiki.com)
fmscan.org - Radio Frequencies & Transmitter Maps worldwide
List of european long wave transmitters (chemeurope.com)
Numbers & Oddities ( "The Spooks Newsletter"): lumea fascinanta a "Number Stations" si a altor semnale ciudate din spectrul HF
Short-Wave.info (baza de date globala cu statii de radiodifuziune si orar de lucru)
MWLIST quick and easy : This web page is just another view of the content of www.mwlist.org, a unique database of worldwide radio stations on longwave, mediumwave and shortwave. MWLIST powers various things like the mediumwave section of fmscan.org, the mwoffsets file, a userlist for Perseus, and an online logbook site. Such a global database did not exist before. It was created following the example of FMLIST. It is a non-commercial and hobby project and open for everyone to contribute and use.
Radio Pirates List1 (AM-FM)
https://priyom.org/ (baza de date semnale speciale )
PilotNav ( baza de date balize aero )
REU / RNA / RWW Signals ( Signals Received in EUrope/North America/World Wide - a very detailed signals selective database)
Posturi radio FM online din Romania
Radio Garden (planiglob rotativ 3D cu posturi de radio online)
Trasare azimuturi si rute: https://osmcompass.com/ https://setcompass.com/DrawRoute.htm
LZW Varna (Bulgaria) maritime coastal radio schedule (you can listen it on our online SDR's)
M.F. Coastal & Maritime Stations 305 kHz to 4000 kHz ( www.coastalradio.org.uk )
Autoritatea Aeronautica Militara Nationala ( vezi liste balize NDB militare )
Baliza OMW 406 KHz (NDB mil. Otopeni, 44 33.62N 026 04.55E ) [ document PDF aici ]
Baliza GNA 284 KHz (NDB Bulgaria, Gorna Oryahovitsa