A Yagi antenna, is a directional antenna consisting of a driven element (typically a dipole or folded dipole) and additional parasitic elements (usually a so-called reflector and one or more directors). The reflector element is slightly longer (typically 5% longer) than the driven dipole, whereas the so-called directors are a little bit shorter. This design achieves a very substantial increase in the antenna’s directionality and gain.
Specifications:
Three-Element 433 MHz Yagi Antenna Specifications (typical)
Frequency: 433.92 MHz
Gain: 6 dB
Front-to-Back Ratio: 20 dB
Pickup Angle: +/- 45 degrees
Polarization: Vertical or horizontal
Impedance: 50 Ohms
Connector: Type N female
Material: Aluminum
Overall Length: 14 in
Maximum Width: 16 in
Maximum Thickness: 1.25 in
Mounting: V bolts, 1 to 2 inch pipe
Seven-Element 433 MHz Yagi Antenna Specifications (typical)
Frequency: 433.92 MHz
Gain: 10 dB
Front-to-Back Ratio: 20 dB
Pickup Angle: +/- 30 degrees
Polarization: Vertical or horizontal
Impedance: 50 Ohms
Connector: Type N female
Material: Aluminum
Overall Length: 25 in
Maximum Width: 14.5 in
Maximum Thickness: 1.25 in
Mounting: V bolts, 1 to 2 inch pipe