User's Manual

CDMA Operating Frequency Programming Information – North American
Cellular Bands
– continued
DRAFT
SC300 1X BTS Hardware Installation, ATP, and FRU Procedures
JAN 2002
7-74
Calculating 1900 MHz Center
Frequencies
Table 7-43 shows selected 1900 MHz CDMA candidate operating
channels, listed in both decimal and hexadecimal, and the corresponding
transmit, and receive frequencies. Center frequencies (in MHz) for
channels not shown in the table may be calculated as follows:
 TX = 1930 + 0.05 * Channel#
Example: Channel 262
TX = 1930 + 0.05*262 = 1943.10 MHz
 RX = TX – 80
Example: Channel 262
RX = 1943.10 – 80 = 1863.10 MHz
Actual frequencies used depend on customer CDMA system frequency
plan.
Each CDMA channel requires a 1.77 MHz frequency segment. The
actual CDMA carrier is 1.23 MHz wide, with a 0.27 MHz guard band on
both sides of the carrier.
Minimum frequency separation required between any CDMA carrier and
the nearest NAMPS/AMPS carrier is 900 kHz (center-to-center).
Table 7-43: 1900 MHz TX and RX Frequency vs. Channel
Channel Number
Decimal Hex
Transmit Frequency (MHz)
Center Frequency
Receive Frequency (MHz)
Center Frequency
25 0019 1931.25 1851.25
50 0032 1932.50 1852.50
75 004B 1933.75 1853.75
100 0064 1935.00 1855.00
125 007D 1936.25 1856.25
150 0096 1937.50 1857.50
175 00AF 1938.75 1858.75
200 00C8 1940.00 1860.00
225 00E1 1941.25 1861.25
250 00FA 1942.50 1862.50
275 0113 1943.75 1863.75
300 012C 1945.00 1865.00
325 0145 1946.25 1866.25
350 015E 1947.50 1867.50
375 0177 1948.75 1868.75
400 0190 1950.00 1870.00
425 01A9 1951.25 1871.25
450 01C2 1952.50 1872.50
475 01DB 1953.75 1873.75
500 01F4 1955.00 1875.00
525 020D 1956.25 1876.25
550 0226 1957.50 1877.50
575 023F 1958.75 1878.75
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