User's Manual

CDMA Operating Frequency Programming Information – continued
E-2 1X SC 4812T Lite BTS Optimization/ATP FEB 2005
PRELIMINARY
Calculating 1900 MHz Center
Frequencies
Table E-1 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:
S TX = 1930 + 0.05 * Channel#
Example: Channel 262
TX = 1930 + 0.05 * 262 = 1943.10 MHz
S RX = TX – 80
Example: Channel 262
RX = 1943.10 – 50 = 1863.10 MHz
Actual frequencies used depend on the 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 E-1: 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
table continued next page
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