User's Manual

FCC Documentation- MM-5500U CDMA 1x/EVDO Modem
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3.4 CDMA RF Specifications
RF performances are compliant with IS-95A/B, cdma2000-1X RTT CDMA Protocol.
3.4.1 Transmitter specifications
Table 2.4 Transmitter performance
Type of Multiplexing Frequency-Division Duplex
Frequency Range 824.64MHz ~ 848.37MHz
Channel Number 20CH
Bandwidth 1.23MHz
Occupied Bandwidth Under 1.32MHz
Type of Oscillation PLL Synthesizer & VCTCXO(19.2MHz)
VCO Output Frequency Range
( divide-by-2 frequency range)
1372.08MHz ~ 1421.54MHz
(686.04MHz ~ 710.77MHz)
Intermediate Center Frequency 138.6MHz
Modulation Method OQPSK
RF Maximum Output Power 0.28W (24.5dBm/1.23MHz)
Frequency Stability(Accuracy) Under defined freq. +/- 300Hz
Waveform Quality Over 0.944
Conducted Spurious Emission Over carrier +/-900KHz, -42dBc/30KHz
Over carrier +/-1980KHz, -54dBc/30KHz
Common RF Impedance 50ohm
Supplied voltage +3.8V DC @ Power Amp.
+2.85V DC @ TX block