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1-4
Introduction
411-2021-111 Standard 01.01 June 1996
The 800 MHz cellular band
In an 800 MHz North American cellular system, a frequency spectrum of 50
MHz is available for service. Operating from 824 to 894 MHz, including the
expanded spectrum, the system conforms to the AMPS IS-54 protocol.
Typically this range is divided into 832 radio frequency (RF) channels. The 832
RF channels are divided into two bands, A and B. The two bands are identified
as follows:
• Band A—for Non-Wireline Operators
• Band B—for Wireline Operators.
Each frequency band has 416 RF channels. Of these 416 RF channels,
typically 21 (depending on the frequency plan) are assigned as the Control
Channels (CCH) and the remaining 395 are Voice Channels (VCH). See
Figure 1-4 and Table 1-1.
Figure 1-4
Channel assignment for 800 MHz cellular systems
A" A B A' B'
Base Station Frequency (MHz)
Channel Number
R
1023
1
333
666
716 799
824 825 835 835 846.5 849 851
869 870 880 890 891.5 894 896TX
RX
R=Reserved
Band
Channel assignment Band A (416 channels) Band B (416 channels)
Control channels 313 - 333 (21) 334 - 354 (21)
Optional—TDMA secondary
control channels
688 - 708 (21) 737 - 757 (21)
Voice channels 001 - 312 (312)
667 - 716 (50)
991 - 1023 (33)
355 - 666 (312)
717 - 799 (83)
A-Band CCH
B-Band CCH
991