HFUnderground https://hfunderground.com/wiki/index.php/Main_Page MediaWiki 1.16.5 first-letter Media Special Talk User User talk HFUnderground HFUnderground talk File File talk MediaWiki MediaWiki talk Template Template talk Help Help talk Category Category talk 1 18844 2026-10-15T12:56:01Z Commsigma 3669 Welcome to HFUnderground.com, aka the HFU. This site is dedicated to documenting longwave, mediumwave, and shortwave stations, including broadcasters, utility/military stations, pirate radio and spy numbers stations. '''Be sure to visit the [http://www.hfunderground.com/board/ HF Underground Message Board] for the latest reception reports and news about pirate and other shortwave radio stations. ''' Everyone who is a radio enthusiast is encouraged to add information to the site. Just become a registered user, and you can start to contribute! *[[%22Welcome_to_the_Hobby_-_Start_Here%22|New To This? - '''Start Here''']] *[[Pirate radio station email addresses]] *[[Pirate QSL Collection]] *[[Pirate Radio New Listener Guide and FAQ]] *[[Spy Numbers Stations]] *[[Soviet/Russian Strategic Communication/Warfare Units]] *[[Cuban Intelligence Radio Stations/Operations]] *[[Pescadores]] *[[Radio Hobby Related Software]] *[[Amateur radio|Amateur (ham) radio]] *[[DXing]] *[[Pirate radio stations]] *[[List of Pirate Radio Frequencies|Pirate radio frequencies]] *[[:Category:People]] *[[Signal Identification]] *[https://www.sigidwiki.com/wiki/Signal_Identification_Guide The Signal Identification Wiki] *[[Shortwave Broadcast Stations]] *[[Private European Shortwave Stations]] *[[Shortwave jammers]] *[[Shortwave Utility Stations]] *[[Fixed/Mobile_bands|Fixed/Mobile MF/HF Allocations]] *[[HF_airband|MF/HF Aircraft Bands Aeronautical Radio]] *[[MWARA|Major World Air Route Area (MWARA) Frequencies]] *[[Mediumwave Broadcast Stations]] *[[Mediumwave Utility Stations]] *[[Longwave Broadcast Stations]] *[[Longwave Utility Stations]] *[[HF_marine|MF/HF Marine Radio]] *[[Maritime Weather Transmissions|MF/HF maritime weather transmissions]] *[[Maritime Fax Transmissions|MF/HF maritime fax transmissions]] *[[VHF / UHF Radio|VHF and UHF Services - including land mobile radio, PMR, etc.]] *[[Business Radio|Business Radio Service - Industrial/Business Radio Pool]] *[[CB|CB radio, Freebanding]] and the [[11_meter|11 meter band]] *[[Community Audio Distribution Service|Community Audio Distribution Service (CADS) and Wireless Public Address System (WPAS) (27 MHz Church Radio)]] *[[Remote Control|Remote Control - R/C Services Worldwide]] *[[HF_pagers|26-28 MHz Data Link Networks and Pagers]] *[[Miscellaneous]] *[[RTL-SDR]] *[[KiwiSDR]] *[[Technical Topics]] *[[NIST_Digital_Archives|NIST Digital Archives]] *[[Part_15_Beacons|Part 15 Beacons]] *[[High Frequency Beacon]] *Radio Related [[Blogs]] *[[LORAN]] *[[Radio Related Memes]] *[[AI on HF]] '''[[:Category:Main topics]]''':Top level category of articles and images. [http://www.hfunderground.com/wiki/Special:Recentchanges?feed=rss Recent Changes RSS Feed] [http://www.hfunderground.com/wiki/Special:Newpages?feed=rss New Pages RSS Feed] == Internet Relay Chat == Many pirate and other radio enthusiasts hang out on the HFUnderground Discord. You can use this link to [https://discord.com/invite/r6U6sf82wz Join the Discord] Afterwards, just go directly to [https://discord.com/ Discord]