Siretta ALPHA Series Adhesive Mounting Antennas - Siretta ALPHA7/4m/FMEF/SMAM/S/S/11, The Siretta Alpha 7 is a compact, puck-shaped GSM & GPS combination antenna. It combines two separate antennas into a single package that measures only ø50 x 17.5mm. The Alpha 7 is ideal for most GSM & GPS systems that require an 'all-in-one' antenna solution. Combination antennas are perfect for applications where the use of multiple antennas is not an option for installation or space availability reasons.The GSM antenna is a 900 / 1800MHz dipole providing GSM and GPRS coverage throughout Europe, Africa and most of Asia. The GPS antenna is built with a 27dB Low Noise Amplifier (LNA) to provide strong satellite fixing in most circumstances where the antenna has full view of the sky. Supplied with an adhesive base, the Alpha 7 is perfect for quick and simple installations onto a number of different surface materials such as: metal, glass, wood and plastic. The use of an adhesive base removes the need t