FCC Narrowbanding Mandate for ASTRO Radios

(Learning and Programming Radio Features)

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By January 1, 2013: Per the Federal Communications Commission (FCC) Rule Part 90 mandate on narrowbanding, in an effort to promote greater spectrum efficiency, the FCC requires that all Public Safety and Industrial / Business licensees must transmit on a 12.5 kHz channel bandwidth or better. The exception to this Part 90 narrowbanding mandate applies only for radios operating within 470-512 MHz frequencies (T-Band), which will continue to support a 25 kHz channel bandwidth, as well as specific exception frequencies noted below. The FCC requires that a radio be certified to operate on Part 90 VHF or UHF radio systems, and that the radio-user have an FCC license to operate the radio on those frequencies.

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All radio codeplugs that are subject to this mandate are identifiable by a "Q507/G507 - 12.5 kHz FCC Mandate" option in the codeplug's Purchased Feature Name list.

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After FLASHport Upgrading the radio to add the "Q507/G507 - 12.5 kHz FCC Mandate" option, you must revisit the transmit bandwidth of all assigned channels to ensure that they comply with the FCC Narrowbanding Mandate.

 

Cloning to a target radio which has the "Q507/G507 - 12.5 kHz FCC Mandate" option from a source radio or codeplug that does not have this option holds certain restrictions. See the Cloning Warnings.

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The impacted FCC Part 90 Frequency ranges are:

VHF: 150.8000 to 162.0125 MHz, and 173.2000 to 173.4000 MHz

UHF1 / UHF2: 421.0000 to 469.9950 MHz

EXCEPTIONS: After the FCC mandate takes effect, specific frequencies in the above VHF and UHF ranges that are not subject to Part 90 narrowbanding, or have a Part 90 exception noted below, are still allowed to operate at 25 kHz. Examples include: Part 22 frequencies, Part 74 frequencies, Part 80 marine frequencies, FRS / GMRS and MURS, Part 97 amateur frequencies, and NOAA weather channels. (See also: the Tx Deviation / Channel Spacing field.)