FCC 90.355 Revised as of October 1, 2006
Goto Year:2005 |
2007
Sec. 90.355 LMS operations below 512 MHz.
Applications requiring not more than 25 kHz bandwidth per frequency in the
25–50 MHz, 150–170 MHz, and 450–512 MHz bands may use either base-mobile
frequencies currently assigned the applicant, or be assigned base-mobile
frequencies available in the service in which eligibility has been
established, provided that:
(a) For transmission between vehicles and base stations, each frequency in a
single-frequency mode of operation will provide location data for
approximately 200 vehicles, or both frequencies in a two-frequency mode of
operation will provide location data for approximately 400 vehicles, except
that for frequencies in the 450–512 MHz band that are assigned in pairs in
accordance with the allocation plan for the band, the requirement is that
location data be provided for approximately 200 vehicles for each frequency
pair; and a showing is made that 50 percent of the vehicles will be in
operation within the system by the end of the second year of the initial
license term, and 70 percent will be in operation within the system by the
end of the initial license term; except that if these vehicle loading
standards will not be met, frequencies will be assigned only on a secondary
non-interference basis to any authorized radiotelephony operation.
(b) The minimum separation between a proposed LMS station and the nearest
co-channel base station of another licensee operating a voice system is 75
miles (120 km) for a single frequency mode of operation or 35 miles (56 km)
for a two-frequency mode of operation. Where the minimum mileage separation
cannot be achieved, agreement to the use of F1D, F2D, G1D, G2D or P0N
emission must be received from all existing co-channel licensees using voice
emissions within the applicable mileage limits. If there is interference
with voice operations and required agreement was not received, or operation
was authorized on a secondary non-interference basis, the licensee of the
LMS system is responsible for eliminating the interference.
(c) Frequencies additional to any assigned under paragraph (a) of this
section will not be assigned to the same licensee at any stations located
within 64 km (40 miles) of any station in which the licensee holds an
interest until each of such licensee's frequencies for LMS operation is
shown to accommodate not less than 90 percent of the frequency loading
requirements specified in paragraph (a) of this section.
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