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Articles

FCC Seeks Comment on a Petition Regarding the 915 MHz Band

March 31, 2009

Articles

FCC Seeks Comment on a Petition Regarding the 915 MHz Band

March 31, 2009

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The Federal Communications Commission (FCC) has requested comment on a Petition for Rulemaking that asks the FCC to allow for the operation of unlicensed devices using digital modulation techniques in the 902-928 MHz (915 MHz) band at a narrower bandwidth than currently permitted. The petitioner claims that these new devices will provide great benefit to people with hearing disabilities by, for example, enabling the transmission of alarms, warnings and other audio signals directly to the hearing devices. The 915 MHz band is currently used for licensed and unlicensed purposes, such as Part 15 and multilateration Location and Monitoring Service (M-LMS) operations.

Specifically, the petitioner requests that Section 15.247(a)(2) of the FCC’s rules be amended to allow systems using digital modulation techniques to operate in the 915 MHz band with a 6 dB bandwidth of 100 kHz (which is narrower than the current requirement that such systems operate with a minimum 6 dB bandwidth of 500 kHz). The petitioner claims that devices operating with 100 kHz bandwidth would operate at a maximum of +23.2 dBm (209 mW), in comparison to devices using 500 kHz bandwidth operating at up to +30 dBm (1 watt), using the FCC’s existing power spectral density limit for this band. In addition, the petitioner requests that the FCC grant it a temporary waiver to operate under the proposed rule change until the FCC rules on the Petition for Rulemaking.

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