TRAVELING OBJECT MOUNTED TELEVISION RECEIVING ANTENNA DEVICE

PURPOSE:To prevent the generation of a fading phenomenon and to obtain easy-to-see pictures by setting the upper limit value of the detecting output level and selecting an antenna showing the highest detecting output level among antennas or synthetic antennas showing a detecting output level lower than said upper limit value. CONSTITUTION:A detecting output level at which a using TV picture receiver produces a cross modulation is set at a reference level setter 40 of a TV receiving antenna device which is mounted on a traveling object. A synchronizing signal (a) sent from the TV picture receiver is applied to a control signal generator 31 to produce a sampling signal (b). Then the antennas which are connected to the picture receiver are selected successively for switch or synthesization by a switch 30. At the same time, a receiving level signal (c) is applied to storage circuits 32-34, and the detecting output level is stored in accordance with the antenna switching timing under the control of the generator 31. A level comparator 35 compares the stored detecting output level with the output level of the level setter 40. Then the switch 30 is controlled only when the detecting output level is lower than the set value. Thus, the generation of a fading phenomenon is prevented.