Contents
The basic offer comprises the following elements:The basic offer comprises the following elements:
- Modem
- 5v Power
- User manual (datasheet CD)
- attenna (a standard deported cellular phone antenna)
- RS232 interface serial link cable
- speakerphone and microphone
Basic offer
The Basic offer set is presented in a unique conditioning, Which external dimensions are close to the following values:
70mm (width) x 60mm (height) x135mm (length)
This is a cardboard box. It is build-in small waves, which are covered with a thin film of white ice-cold paper.
It has a 1.5m line and >3db amp.
RF architecture
The RF part is based on a specific dual band chip and includes:
- 2 dedicated down converters
- IF demodulator
- All local RF & IF VCO
- PLL
- Transmit loop (modulator, down mixer, phase frequency comparator)
- 2 power amplifiers
RF frequencies
The RF functionalities comply with the Phase II EGSM 900/GSM 1800 or GSM 1900 recommendation:
- Rx (EGSM): 925 to 960MHz
- Tx (EGSM): 880 to 915MHz
- Rx (GSM 1800): 1805 to 1880MHz
- Tx (GSM 1800): 1710 to 1785MHz
- Rx (GSM 1900): 1930 to 1990MHz
- Tx (GSM 1900): 1850 to
RF performances
1) Receiver
- EGSM 900 sensitivity: < -102 dBm
- GSM 1800/1900 sensitivity: <-102 dBm
- Selectivity @ 200 KHz: > 9 dBc
- Selectivity @ 400 KHz: > 41 dBc
- Dynamic range: > -43 dBm
- Co-channel rejection: >= 9 dBc
2) Transmitter
- Maximum output power for EGSM 900: 33dBm ± 2dB
- Maximum output power for GSM 1800/1900: 30dBm ± 2dB
- Minimum output power for EGSM 900: 5dBm ± 5dB
- H2 level: < -30 dBm
- H3 level: < -30 dBm
- Phase error at peak power: <5° RMS
- Frequency error: ± 0.1 ppm max
Antenna specifications
- Frequency band: Dual band E-GSM 900Mhz – GSM 1800MHz/GSM 1900Mhz
- EGSM 900 GSM 1800 GSM 1900
- Rx band 925-960MHz 1805-1880Mhz 1930-1990MHz
- Tx band 880-915Mhz 1710-1785Mhz 1850-1910MHz
- Impedance: 50
- VSWR Tx max 2:1 / Rx max 2:1
- Typical radiated gain: 0dBi


