Goto Section: 90.533 | 90.537 | Table of Contents
FCC 90.535
Revised as of October 1, 2008
Goto Year:2007 |
2009
Sec. 90.535 Modulation and spectrum usage efficiency requirements.
Transmitters designed to operate in 769–775 MHz and 799–805 MHz frequency
bands must meet the following modulation standards:
(a) All transmitters in the 769–775 MHz and 799–805 MHz frequency bands must
use digital modulation. Mobile and portable transmitters may have analog
modulation capability only as a secondary mode in addition to its primary
digital mode. Mobile and portable transmitters that only operate on the low
power channels designated in Sec. Sec. 90.531(b)(3), 90.531(b)(4), are exempt from
this digital modulation requirement.
(b) Transmitters designed to operate in the narrowband segment using digital
modulation must be capable of maintaining a minimum data (non-voice) rate of
4.8 kbps per 6.25 kHz of bandwidth.
(c) Transmitters designed to operate in the wideband segment using digital
modulation must be capable of maintaining a minimum data (non-voice) rate of
384 kbps per 150 kHz of bandwidth.
(d) The following provisions apply to licensees operating in the channels
designated in Sec. Sec. 90.531(b)(5) or 90.531(b)(6).
(1) With the exception of licensees designated in paragraph (d)(2) of this
section, after December 31, 2014, licensees may only operate in voice mode
in these channels at a voice efficiency of at least one voice path per 6.25
kHz of spectrum bandwidth.
(2) Licensees authorized to operate systems in the voice mode on these
channels from applications filed on or before December 31, 2014, may
continue operating in voice mode on these channels (including modification
applications of such licenses granted after December 31, 2014, for expansion
or maintenance of such systems) at a voice efficiency of at least one voice
path per 12.5 kHz of spectrum bandwidth until December 31, 2016.
(3) The licensees designated in paragraph (d)(2) of this section must, no
later than January 31, 2017, file a declaration through the Universal
Licensing System that they are operating these channels at a voice
efficiency of at least one voice path per 6.25 kHz of spectrum bandwidth.
[ 63 FR 58651 , Nov. 2, 1998, as amended at 65 FR 53645 , Sept. 5, 2000; 65 FR 66655 , Nov. 7, 2000; 67 FR 76701 , Dec. 13, 2002; 70 FR 21673 , Apr. 27, 2005;
72 FR 48861 , Aug. 24, 2007]
Goto Section: 90.533 | 90.537
Goto Year: 2007 |
2009
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