Myamplifiers.com offers AT6200GW. Learn advantages of this dual band mobile amplifier here http://www.myamplifiers.com/cellular_phone_amplifier_at6200gw.html .The peculiarity of AnyTone AT6200 GW dual band cellular phone amplifier is the possibility to improve both GSM (900MHz) and 3G(2100MHz) signal at the same time.
The dual band mobile amplifier is ideal for creating convenient communication environment in large areas up to 500 m2.