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Because of these requirements, manufacturers must go to extra lengths to provide technology that can support the required timing accuracy and deliver a good return on investment for the customer. Broadcasters considering the potential scenarios in which SFN may become a desirable option should also note that equipment capable of delivering the accuracy needed for SFN can provide useful benefits in non-SFN applications too. As with most infrastructure purchasing decisions today, flexibility and the means of keeping options open are high on the checklist, so while SFN may not be an immediate priority for some broadcasters, equipment that can deliver accurate timing provides for that possibility in the future, without further investment. In order both to support SFN and to provide the benefits of accurate synchronization to non-SFN operations, 2wcom has developed its SFN product range. The 2wcom SFN products provide the functionality of a timestamp generator within the transmission feed, inserting the timing information into the MPEG stream. At the transmitter, a FlexDSR02/04+ DVB Satellite Receiver, or MM01, or FMC01 analyzes the signals and ensures the SFN-ready synchronized exact timing of the FM transmission. So the solution delivers precise, micro-second accurate synchronization of the FM cell contribution path, with automatic adjustment of the several contribution runtime differences caused by variable packet delays, jitter and satellite anomalies. Distribution can be by ASI, E1, IP or satellite, and any one of the feeds can be selected for backup purposes. This allows broadcasters to implement FM SFN networks using existing analog FM technology (just/only adapted to 1pps synchronisation), with minimal additional hardware: if components such as the MM01 and FMC01 have been installed, they already have the capability for timestamp generation. To upgrade an existing infrastructure from scratch, it just requires one inserter for the uplink, and a 2wcom receiver/decoder at each transmitter site. KITPLUS - THE TV-BAY MAGAZINE: ISSUE 103 JULY 2015 | 45