User Guide

TECHNICAL ABSTRACT
11/97JR
2–16
NHC–4
Technical Documentation
Copyright  Nokia Mobile Phones
Electrical Specifications
Transceiver General Specifications
Cellular system: North American Dual–Mode
TX frequency band: 824.010...848.970 MHz
RX frequency band: 869.010...893.970 MHz
Duplex spacing: 45 MHz
Number of RF channels: 832
Channel spacing: 30 kHz
Power class: IV, intermit operation
Maximum output power: 0.5 W
Method of frequency synthesis: Two digital phace–locked loops
Frequency control: VCTCXO
Receiver type: 2 IF, linear in D mode, nonlinear
in A mode
Modular type: I/Q baseband in D mode,
FM modulator in A mode
Spurious emissions in transmit
band at ant connection:
< –60 dBm
Spurious emissions in receive
band at ant connection: < –80 dBm
Power level step: 4 dB
Power level tolerance, levels 2–7: +2/–4 dB
Analog Mode
Transmission Specifications
Modulation method:
FM
Deviation, speech and ST: ± 12 kHz peak
Deviation, WBD: ± 8 kHz peak
Deviation, SAT: ± 2 kHz peak
Deviation, voice and SAT: ± 14 kHz peak
Compressor: 2:1
Output RF power (ERP from ext. ant.): 26.8...8 dBm
Number of power levels (2–7): 6