VK VK4500, Service Manual

Page: 9 / 81

VK Quality Group GSM C/S
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Standard
Standard
GSM850 Tx =
824~849
Rx = 869~894MHz
P-GSM Tx =
890~915
Rx = 935~960MHz
DCS Tx =
1710~1785
Rx = 1805~1880MHz
PCS Tx =
1850~1910
Rx =1 930~1990MHz
3) Radiowave Type: E-GSM Tx =
880~915
Rx = 925~960MHz
4) Oscillation Mode:
5) Modulation Mode:
7) Terminal Amp(IC):
8) Channel Separation:
10) IF VCO Frequency:
11) Multiplying Method:
12) Spurious
1G~4G(-30dBm or below from the FTA standard)
GSM850 = 1737.8 ~ 1787.8MHz
EGSM = 1849.8 ~ 1919.8MHz
DCS = 1804.9~1879.9MHz
PCS = 1929.9 ~ 1989.9MHz
GSM900 = 2W(Max)
GSM850 = 2W(Max)
DCS = 1W(Max)
PCS = 1W(Max) 1) Rated Output:
2) Frequency Range:
6) Frequency Stability:
9) RF1 Local Oscillation Frequency:
GSM850 = 896MHz
EGSM = 798MHz
DCS = 766MHz
PCS = 854 MHz
Frequency Multiplying
PLL Synthesize
GMSK
GSM900, GSM850 = 90Hz
DCS, PCS = 180Hz
TQ7M4006
200KHz
E-GSM = 975~1023, 1~124
P-GSM = 1~124
GSM850 = 128 ~ 251
DCS = 512~885
PCS =512 ~ 810
2) Channel Separation: 200KHz
3) Oscillation Mode: PLL Synthesize
4) RF2 Local Oscillation Frequency: GSM850 = 1272 ~ 1297MHz
E-GSM = 1279 ~ 1314MHz
DCS = 1327 ~ 1402MHz
PCS = 1423 ~ 1483MHz
5) Intermediate Frequency: 100KHz
6) Modulation Mode: GMSK
7) Spurious: 1G~4G(-30dbm or below from the FTA
standard)
1) Channel Number: