Thursday, September 02, 2010

Digital for AM Band ? Maybe....

All India Radio tested the AM single channel Digital Radio Mondiale (DRM) simulcast system on a 100 kW transmitter last year. Unlike the DRM simulcast system that was tested around 2002 which used two adjacent channels, which clearly would not work in the USA, this system used operates on a single channel using an ingenious method of squeezing the digital carriers completely within a +/- 5 kHz channel!

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