Origin	China
Model Number	HY-390
Brand Name	HY

1.1 Technical Specification
1.1.1 Module Specification
Please refer to Table 1-1for the specifications of HY-390.
Table 1-1 module specification
Module Models Standard Frequency(MHz)
HY-390 CDMA 2000 1X 800MHz
1.1.2 Main Functions and Features
Please refer to Table 1-2 for the Main Functions and Features of HY-390.
Table 1-2 Main functions and features
Item Description
Voice Coding 8kEVRC and 13kQCELP High-quality voice
Voice IS707-A.4
Data IS707-A.5
SMS CMT-95 Standard SMS Service.
RF ZIF(Zero Intermediate Frequency) technology
Call Waiting/Call Forward/incoming call display
Support virtual keep on-line(VKL)
Phone book
OTASupport OTASP and OTAPA
Other
Effective power saving technology / built-in power supply management chipsetItem Description
Audio interface Double audio I/O channel.
R-UIM interface Built-in UIM/R-UIM
UART interface
  Single UART interface
  Maximum data rate 230.4kbps through the port
USB interface USB1.1 DeviceSupport full speed (12Mbps)
PCM interface Support data rate 128kbps
Antenna interface 50 Ohm input impedance control
AT command software
interface
Support AT command and ZTE AT command1.1.4 Technical parameters
Please refer to Table 1-4 for the Technical parameters of MC8331.
Table 1-4 Technical parameters
Item Description
Working temperature -20°C ~ +55°C
Input voltage 3.3V-4.25V
Maximum current 630mA  -104 dBm
Idle current (average) 3mA  -75 dBm
Call current 230mA  -75 dBm
sensitivity -104 dBm
Tx power 23dBm ~ 30dBm (Class III)
Frequency range 800MHz
Tx824~849 MHz
Rx869~894 MHz