User guide
Appendix B – Cellular Information 
62  Multi-Tech Systems, Inc. MultiModem rCell User Guide 
GSM Antenna Requirements/Specifications 
Frequency Range 
824 – 960 MHz / 1710 – 1990 MHz 
Impedance 
50 Ohms 
VSWR 
VSWR shall not exceed 2.0:1 at any point across the bands of operation 
Typical Radiated Gain 
3 dBi on azimuth plane 
Radiation 
Omni-directional 
Polarization 
Vertical 
Antenna Loss 
Free space not to exceed -3db 
TRP/TIS 
Including cable loss the total radiate power (TRP) at the antenna shall be 
no less than +22/24.5 dBm for 850/1900 MHz respectively, and the total 
isotropic sensitivity (TIS) at the antenna shall be no less than -99/101.5 
dBm for 850/1900 MHz respectively.  
HSDPA / UMTS RF Specifications 
Bands I, II, V 
UMTS 850 Band V 
UMTS 1900 Band II 
UMTS 2100 Band I 
Frequency RX 
869 to 894 MHz 
1930 to 1990 MHz 
2110 to 2170 MHZ 
Frequency TX 
824 to 849 MHz 
1850 to 1910 MHz 
1920 to 1980 MHZ 
HSDPA / UMTS Antenna Requirements/Specifications 
Frequency Range
824 – 960 MHz / 1710 – 1990 MHz / 1920 – 2170 MHz
Impedance 
50 Ohms
VSWR 
VSWR shall not exceed 2.0:1 at any point across the bands of operation
Typical Radiated Gain 
3 dBi on azimuth plane 
Radiation 
Omni-directional 
Polarization 
Vertical 
Antenna loss 
Free space not to exceed -3db 
TRP/TIS 
Including cable loss the total radiate power (TRP) at the antenna shall be 
no less than +22/24.5 dBm for 850/1900/ MHz respectively, and the total 
isotropic sensitivity (TIS) at the antenna shall be no less than -99/101.5 
dBm for 850/1900 MHz respectively. Note: 2100MHz is not used by the 
North America carriers. 
GPS (Global Positioning) RF Specifications  
 GPS L1 
 Frequency RX 
1575.42 
 LNA Bias Voltage 
5V 
 LNA Current Consumption 
40mA Max 
GPS Antenna Requirements/Specifications 
Frequency
1575MHz
Impedance
50 Ohms
VSWR
1.5db
Input voltage 
3.0V +/- 0.3V 
GPS TIS 
The total isotropic sensitivity (TIS) at the antenna shall be no less than  
-147 dBm 










