Samsung sch-880 Service Manual

Frequency Range

• Transmitter : 824 ~ 849 MHz

• Receiver     : 869 ~ 894MHz

Channel Bandwidth : 1.23MHz

Channel Spacing : 30kHz

Number of Channels : 832

Duplex Seperation : 45 MHz

Type of Emission : 40K0F8W,40K0F1D

Input/Output Impedance : 50 

Ω

Intermediate Freequency

• Transmitter : 130.38MHz

• Receiver    : 85.38MHz

Local Frequency

• Transmitter : 1st(F

TX

+130.38MHz), 2nd(260.76MHz)

• Receiver    : 1st(F

RX

+85.38MHz), 2nd(170.76MHz)

TCXO Frequency : 19.68MHz

Frequency Stability : (F

RX

-45MHz) ± 300Hz

Operation Temperature : -30°C ~ 60°C

Supply Voltage : +3.6V

Waveform Quality :0.944 or more

Open Loop Power Control Range

• -25dBm   : -57.5dBm  ~ -38.5dBm 

• -65dBm   : -17.5dBm  ~ +1.5dBm

• -104dBm  : +18.0dBm ~ +30dBm

Minimum Tx Power Control : below -50dBm 

Closed Loop Power Control Range : ±24dB

Maximum RF Output Power : 200mW(+23dBm)

Occupied Bandwidth : 1.23MHz

Conducted Spurious Emission @900 KHz : -42dBc/30kHz    

@1.25 MHz : -54dBc/30kHz 

Samsung Electronics

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