The Mechanical Tilt is given by physically tilting down the GSM antenna.
Tilting downward focuses the beam on a specific area and hence better coverage.
Antenna gain of base station for a specific user depends on antenna pattern, antenna orientation (azimuth and tilt) and user's coordinates with respect to base station.
formulae for finding rx level
You can rent a tilt tray online from the Tilt Tray AU website. Alternatively, you can also find Tilt Tray hiring services from websites such as YellowPages.
A yagi is a directional antenna consisting of two or more dipoles.
its called a tilt wheel. Not used in old VW beetles
Electrical tilt is a tilt which gives by knob present downward in GSM antenna. It is done for effecting the coverage of antenna. If one GSM antenna overshoots then interference will produce. then we give electrical tilt then front lobe will change and back lobe will not change. so antenna provides coverage in both direction. Electrical tilt is always gives in City. It reduces interference.
In gsm tilt is a adjustment to control the extent and penetration power of antenna.
Technology used in Electrical Tilt antenna is to tilt the beam by altering the signal Phasing,resulting decrease in main,side and backward lobes.This has overcome the shortcomings of Mechanical Tilt Antenna in which the the whole antenna is physically tilted,which lifts the backward lobe in upward direction and sidelobes patterns are somewhat distorted. Now a Days Remote Electrical Tilt Antennas are popular,In which Electrical Tilt can be done from Remote Location.
Mechanical tilt is given physically but Electrical tilt set by antenna designer for the operater.... If mechanical tilt given the front lobe is directed to the particular location..means toward the H- plane...and back lobe is directed to air..means opposite direction to H- plane...so occur result is the interference in back lobe... If electrical tilt given the front lobe and back lobe toward the H-plane.....so occur result is reduce the interfernce in back lobe...
Antenna gain of base station for a specific user depends on antenna pattern, antenna orientation (azimuth and tilt) and user's coordinates with respect to base station.
1.25MHz
http://www.ehow.com/list_7279317_types-gsm-antennas.html
In GSM mainly using Panel type antennas but in the case of Microwave Antenna using Horn antennas. Microwave anteenas propogate signal straghtly. So line of sight (LOS) is main issue in the case of Microwave antenna, it means that both antennas must be allign in face to face. Microwave antennas are using for link between BTS but GSM antennas are directly link with customers. Antenna Gain also very much difference both cases. JPS o,[.[;.;[.]/]/ pppppppppppppppp
Antenna hopping is a feature in which the Tx/Rx is passed through all the available antenna paths in a sector. No frequency is changed during antenna hopping. This helps improve performance by providing spatial diversity.
formulae for finding rx level
You can use the SIM Card method for GSM carriers, or find a way to switch plans with the dual-antenna iPhone 4S.
Once you get 5 mechanical skill points you have to complete the mission "Earn Mechanical 5, break into the Penthouse, and steal the Blueprints" and when you obtain the blueprints for the antenna you have to take it to the alien emperor: Emperor Zizzle.