Yagi Antenna Boosters

[maelstrom]

What he’s saying is a true Yagi Antenna is an active antenna, the ones people are discussing here are passive and only re-radiate the existing signal with additional loss.

According to all of the literature I've read, apart from the original antenna it's used with the yagi antenna isn't active. For example, see Yagi Antenna: Yagi-Uda Aerial » Electronics Notes which says:

The Yagi antenna design has a dipole as the main radiating or driven element to which power is applied directly from a feeder. Further 'parasitic' elements are added which are not directly connected to the driven element but pick up power from the driven dipole element and re-radiate it.

and Yagi-Uda antennas - putting the theory into practice - tailor-made designs! which says:

The antenna has only a single active (driven) element, typically a half wave dipole or folded dipole. It means that only this member (W) of the structure is excited (fed/driven via a feed line from a generator). The rest of the components are parasitic elements (passive radiators) and they help to transmit the energy in a particular direction.

Used with a DJI RC, the active, driven element is the integrated antenna on the RC. The yagi array, which generally slips over the antenna, is passive.

 

[SkyeHigh]

According to all of the literature I've read, apart from the original antenna it's used with the yagi antenna isn't active. For example, see Yagi Antenna: Yagi-Uda Aerial » Electronics Notes which says:

The Yagi antenna design has a dipole as the main radiating or driven element to which power is applied directly from a feeder. Further 'parasitic' elements are added which are not directly connected to the driven element but pick up power from the driven dipole element and re-radiate it.

and Yagi-Uda antennas - putting the theory into practice - tailor-made designs! which says:

The antenna has only a single active (driven) element, typically a half wave dipole or folded dipole. It means that only this member (W) of the structure is excited (fed/driven via a feed line from a generator). The rest of the components are parasitic elements (passive radiators) and they help to transmit the energy in a particular direction.

Used with a DJI RC, the active, driven element is the integrated antenna on the RC. The yagi array, which generally slips over the antenna, is passive.

Which is exactly what we both stated previously.

 

[raven swe]

And without seeing the internals of the remote antenna it may not be a true di-pole, as most handheld transceivers use the chassis as the second half of the antenna.