As the HDTV build out enters a more mature stage, smaller stations are looking for a cost-effective solution to upgrading their analog STL links to handle the ATSC digital signals. The upgraded STL links must be capable of transporting the ATSC digital 19.39 Mbps signals as well as control and monitoring signals without a loss of system performance. Nucomm has developed the Analog Coder, a cost effect solution for upgrading an existing Analog Microwave link to handle a variety of digital signal and data rates such as the HDTV digital 19.39 Mbps signal plus a T1 Data Pack without a loss in performance. The Analog Coder is ideal for single or multi-hop links. The Analog Coder consists of a modulator and a demodulator that attaches to an existing analog transmitter and receiver link enabling the ATSC and other digital signals to be reliably transported. The only modification to the analog link requires that emphasis network is bypassed and the sub-carriers turned off. The Analog Coder is presently in use at a number of TV stations both in the US and Internationally. The Analog Coder was demonstrated at NAB2001 and received an award from TV Technology for its technical innovation. It was shown at NAB2002 as well as it is being demonstrated again this year at NAB2003. The demonstration passes an ATSC signal and a T1 video signal through a 30-year-old, unmodified MACOM G Line analog microwave link operating in the 11 GHz band.
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