The GSM Trainer is a modem or mobile equipment for transmission of voice and data calls as well as SMS (Short Message Service) in GSM Network. To control the GSM modem there is an advanced set of AT commands according to GSM ETSI (European Telecommunications tandards Institute) 07.07 and 07.05 implemented. The GSM standard has established itself across continents. The trainer is well suited for studying AT commands by camping to real networks using SIM card.

Technical Specifications
GSM capability : GSM 900 / 1800, E – GSM
GSM data services : Asynchronous, Transparent & Non
Transparent modes. 14.4 kbits / s
SIM Interface : 3 V
RF characteristics :
Receiver
EGSM Sensitivity : < -104 dBm
DCS Sensitivity : < -102 dBm
Selectivity @ 200 Khz : > 9 dBc
Selectivity @ 400 KHz : > 41 dBc
Dynamic range : 63 dB
Intermodulation : >-43 dBm
C-channel rejection : 9³ dBc
Transmitter
Maximum output power : 33 dBm ± 2 dB (EGSM)
Maximum output power : 30 dBm ± 2 dB (DCS)
Minimum output power : 5 dBm ± 5 dB (EGSM)
Minimum output power : 0 dBm ± 5 dB (DCS 1800)
Noise in 925 – 935 MHz : < -67 dBm
Noise in 935 – 960 MHz : < -79 dBm
Noise in 1805 – 1880 MHz : < -71 dBm
Phase error at peak power : < 5° RMS
Frequency error : ± 0,1ppm max
Power supply : 9 V
Current consumption : Max 500 mA

Ltekonline are the manufacturers of Basic GSM Trainer used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Communication System for Engineering Teaching Lab in Universities