== Kilder/referencer ==
* Populær og teknisk: [https://web.archive.org/web/20070927194712/https://www.ebu.ch/en/technical/trev/trev_305-murphy.pdf BBC Research & Development, UK: The AM Signalling System AMSS – Does your radio know what it's listening to? (pdf)] Citat: "...The AM Signalling System (AMSS) adds a small amount of digital information to existing analogue AM broadcasts on short-, medium- and long-wave, giving similar functionality to that provided by the Radio Data System (RDS) on the FM bands..."
* [https://web.archive.org/web/20181109214733/http://downloads.bbc.co.uk/rd/pubs/annual-review/rev_05/bbc-rd-ar-04-05-value-to-the-uk.pdf BBC: Global value (pdf, papirside 56)]
* Teknisk: [https://web.archive.org/web/20181109214833/https://portal.etsi.org/webapp/workProgram/Report_WorkItem.asp?wki_id=21485 ETSI: Digital Radio Mondiale (DRM); AM signalling system (AMSS)] Citat: "... The present document defines a system for adding a limited amount of service information to analogue broadcasts in the frequency bands below 30MHz in a complementary way to the Digital Radio Mondiale (DRM) system. It is intended to be used by broadcasters in the transition to all digital transmission by providing labelling and frequency information for a better user experience...Supporting Organizations...BBC, Fraunhofer, Sony, Bosch..."
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