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Consumer Electronics by S. P. Bali

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TRANSMITTING RECEIVING ANTENNA

Consistent with most mobile communications systems the antennas are vertically polarised to guarantee uniform reception and transmission in all directions, regardless of the direction in which the mobile vehicle is travelling. The mobile antenna is a half-wave vertical whip usually mounted at the top centre of the rear window of the mobile vehicle and is used for receiving and transmitting.

The cell transmitting antenna, again, is a single, driven, vertical, omnidirectional element mounted on top of the transmitting tower (see Fig. 43.12). The cell receiving antenna system is shown one-third of the way down the transmitting tower in the figure and consists of six half wave vertical dipole antennas, each with a 90° ...

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