Appendixc - Antenna For The Multi Modem Isms; Rf Specifications; Antenna Specifications; Gsm/Egsm Antenna Requirements/Specifications - Multitech MultiModem iSMS SF 100-G User Manual For System Administrators

RF Specifications

Frequency RX
Frequency TX
RF Power Stand

Antenna Specifications

GSM/EGSM Antenna Requirements/Specifications

Frequency Range:
Impedance:
VSWR:
Typical Radiated Gain:
Radiation:
Polarization:
Wave:

Antennas Available from Multi-Tech Systems, Inc.

Description
900/1800 MHz 1/2 Wave Antenna Mag Mount, 12.5", 1 Pack
850/1900 MHz 1/2 Wave Antenna Mag Mount, 12.5", 1 Pack

PTCRB Requirements Note

There cannot be any alteration to the authorized antenna system. The antenna system must be the same
type with similar in-band and out-of-ban radiation patterns and maintain the same specifications.

FCC Requirements Note

The antenna gain, including cable loss, must not exceed 3.0 dBi at 1900 MHz / 1.4 dBi at 850 MHz for
mobile operating configurations and 7.0 dBi at 1900 MHz / 1.4 dBi at 850 MHz for fixed mounted
operations, as defined in 2.1091 and 1.1307 of the rules for satisfying RF exposure compliance.
The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20
cm from all persons and must not be collocated or operating in conjunction with any other antenna or
transmitter.
Multi-Tech Systems, Inc.
Downloaded from Elcodis.com electronic components distributor
Appendix C – Antenna for the
MultiModem iSMS
GSM 850 EGSM 900
869 to 894 MHz 925 to 960 MHz
824 to 849 MHz 880 to 915 MHz
2W at 12.5% duty 2W at 12.5% duty
cycle cycle
824 – 960 MHz / 1710 – 1990 MHz
50 Ohms
<2.0:1
3 dBi on azimuth plane
Omni
Vertical
Half Wave Dipole
MultiModem® iSMS User Guide for Administrators
GSM 1800 GSM 1900
1805 to 1800 MHz 1930 to 1990 MHz
1710 to 1785 MHz 1850 to 1910 MHz
1W at 12.5% duty 1W at 12.5% duty
cycle cycle
Part Number
ANF1-1MMHW
ANF2-1MMHW
109