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Which of these does not produce an omnidirectional signal?
Horizontal dipole
Vertical dipole
5/8 vertical whip
Ground plane antenna
Which of these is a directional antenna?
Yagi antenna
Vertical dipole
5/8 vertical whip
Ground plane antenna
The ERP of an antenna is calculated from:
The horizontal gain multiplied by the vertical gain
The power into the antenna divided by the gain of the antenna
The power into the antenna multiplied by the gain of the antenna.
The power into the antenna multiplied by the nymber of elements of the antenna
Which of these is most important in determining if an antenna will be efficient?
The height of an antenna
The diameter of the antenna
The lenth of the insulators at the centre and each end of the antenna
The length of an antenna
To make an antenna operate when it is not resonant on the frequency you would use