FCC Web Documents citing 74.637
- http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-01-92A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-01-92A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-01-92A1.txt
- mobile operations, and devices that are used by persons with disabilities. Only AMPTP filed reply comments, in which it makes changes to its proposals to address the commenters' concerns. Discussion A. BAS Technical Rules (Part 74) and Conforming Technical Rules for Parts 74, 78 and 101 1. Digital Modulation in the 2 GHz, 7 GHz, and 13 GHz Bands Section 74.637 of the Commission's rules provides emission limitation requirements (emission masks) for TV BAS. Digital modulation is specifically addressed only in paragraph (c), which provides an emission mask for analog or digital modulation in the 6425-6525 MHz, 17,700-19,700 MHz, and 31.0-31.3 GHz bands. Although the rules do not specifically prohibit digital modulation in other TV BAS bands (i.e., 2025-2110 MHz, 2450-2483.5
- http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-02-298A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-02-298A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-02-298A1.txt
- Inc. (MSTV) and the National Association of Broadcasters (NAB) state that they applaud allowing digital modulation for all BAS bands and support the revision and conformance of BAS with CARS and FS rules. A. BAS Technical Rules (Part 74) and Conforming Technical Rules for Parts 74, 78 and 101 1. Digital Modulation in All Television and Aural BAS Bands Section 74.637 of the Commission's rules sets forth emission requirements for TV BAS operations. Digital modulation is specifically addressed only in paragraph (c), which provides for analog or digital modulation in the 6425-6525 MHz, 17.7-19.7 GHz, and 31.0-31.3 GHz bands. Although the rules do not specifically prohibit digital modulation in other TV BAS bands (i.e., 2025-2110 MHz and 2450-2483.5 MHz (2 GHz),
- http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-03-134A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-03-134A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-03-134A1.txt
- guard bands. We request comment on whether such measures should be taken, and specifically whether TT&C transmitter emissions outside the band 2025-2110 MHz should be limited to those of a digital BAS transmitter with a bandwidth of 12 MHz and an output power of 13 dBW, centered 6.5 MHz from the band edge and meeting the emission mask in Section 74.637(a)(2). With regard to the potential for receiver overload interference, we note that, as indicated above, TT&C transmitters are expected to operate with transmitter output power levels ranging from 100 watts to 10 kW. This raises concerns about the potential for overload of fixed and/or mobile receivers operating near TT&C stations receiving on spectrum above and below the band 2025-2110 MHz.
- http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-246A1.doc http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-246A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-04-246A1.txt
- MHz, 2020-2025 MHz and 2175-2180 MHz Bands, WT Docket No. 04-356 (``AWS 2 GHz Service Rules NPRM''). . In addition, as requested by Cingular in its Comments at 9, concerning the potential for interference from BAS systems in the band 2025-2110 MHz to AWS systems in the band 2110-2155 MHz, we confirm that the BAS digital emission mask in Section 74.637(a)(2)(iii) specifies a spectral density floor of -43 dBW/4 kHz, equivalent to -13 dBm/4 kHz, -19 dBW/MHz, or +11 dBm/MHz, for frequencies removed from the assigned frequency by more than 250 percent of authorized bandwidth, regardless of the measurement resolution bandwidth used. We also take this opportunity to remind prospective AWS licensees that, as we noted in the AWS Service Rules