Navigating the FCC Narrowbanding Requirements - Seiler

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Range as a function of protocol,channel bandwidth and link rateProtocol 12.5 / 4800 12.5 / 8000 12.5 / 9600 25 / 9600 25 / 19200TM3 n/a n/a 100% n/a 84%TT450S 82% 96% n/a 100% n/aTransEOT/GMSK ??% n/a n/a 97% n/aTransEOT/4FSK n/a n/a 60% n/a ??%TransFST n/a n/a 99% n/a 102%** Range varies greatly with environment, so it was normalized toTT450S/25kHz/9600bps
Recommendations for 1/1/13• Use frequency tables with 12.5 kHz-widechannels• Select a radio protocol supported by all theradios in the network• Transmit at the fastest radio link ratesupported by that protocol• If the fastest radio link rate is 4800 bps, youmay have to use CMRx corrections
Page 1 and 2: Session S-20203-P: Navigatingthe FC
Page 3 and 4: What is “Narrowbanding?”• The
Page 5 and 6: But there’s a twist…• Some us
Page 7 and 8: No need to apply for a newlicense
Page 9 and 10: Applying for a 25 kHz/19200 bpslice
Page 11 and 12: Legal Implications: TheManufacturer
Page 13 and 14: The Happy Side of NarrowbandingTwic
Page 15: Battery Life as a function ofprotoc
Page 19 and 20: Wireless Modes Supported:TDL Radios
Page 21: Narrowbanding Trade-In Program• T

Navigating the FCC Narrowbanding Requirements - Seiler

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