Radio data code manual : worldwide HF communication today
IEC 60966-2-1 [documento eletrónico] : radio frequency and coaxial cable assemblies; : part 2-1; : sectional specification for flexible coaxial cable assemblies / International Electrotechnical Commission
Nomenclature des stations de radiorepérage et des stations effectuant des services spéciaux / Union Internationale des Télécommunications; International Telecommunication Union; Unión Internacional de Telecomunicaciones
2009 Super frequency list : broadcast and utility / ed. Klingenfuss Publications
2009 Shortwave frequency guide : worldwide broadcast and utility radio stations / ed. Klingenfuss Publications
2009/2010 Guide utility radio stations : worldwide HF communication today / ed. Klingenfuss Publications
Radio regulations / International Telecommunication Union
Radio regulations [documento eletrónico]
Nomenclature des stations de navire : supplément récapitulatif Nº 3 à la 48e édition; : Décembre
The international communications market 2008 [documento electrónico] / Office of Communications