Altec gsm socket al7024s Manuale Utente

AL7020S, AL7024S Designer’s Guide 

 

Doc. No. DG_7024E 

Altec Electronic AG  

Seite 16 / 32 

 

Table 3.7 -  Antenna Performance Recommendations 

 

TX   824 – 849 MHz 

GSM 850 

RX  869 – 893 MHz 
TX  880 – 915 MHz 

GSM 900 

RX  925 – 960 MHz 
TX  1710 – 1785 MHz 

DCS 1800 

RX  1805 – 1880 MHz 
TX  1850 - 1910 MHz 

PCS 1900 

RX  1930 – 1990 MHz 

Gain: 

0 dBi (unity) gain or 
greater 

Impedance: 50 

Ohm 

VSWR: 

Typical: 1.5:1 
Worst case: 2.5:1 

 
 

3.4.3  Antenna Installation  
 

•  A minimum separation distance of 20 cm needs to be maintained between the 

antenna and all persons. 

 
•  The transmitter effective radiated power must be less than 3.0 Watts ERP (4.9 

Watts or 36.9 dBm EIRP). This requires that the combination of antenna gain and 
feed line loss does not exceed 16 dBi. 

 
 

3.4.4  User Operation  
 

Do not operate your unit when a person is within 8 inches (20 centimeters) of the 
antenna. A person or object within 8 inches (20 centimeters) of the antenna could 
impair call quality and may cause the phone to operate at a higher power level than 
necessary. 
 
IMPORTANT: The unit must be installed in a manner that provides a minimum 
separation distance of 20 cm or more between the antenna and persons to satisfy 
FCC RF exposure requirements for mobile transmitting devices. 
 
IMPORTANT: To comply with the FCC RF exposure limits and satisfy the categorical 
exclusion requirements for mobile transmitters, the following requirements must be 
met: