|
|
5-Element- 28-Ohm-Yagi with 4.50m-Boom Short data: Gain 8.7dBd, F/B 24dB, bandwidth >500KHz (49.9-50.4 MHz) at SWR < 1.5 Link: A step-by-step description of building this Yagi by Ian, S55O with good pictures |
|
|
5-Element- 28-Ohm-Yagi with 4.50m-Boom Short data: Gain 8.7dBd, F/B 24dB, bandwidth >500KHz (49.9-50.4 MHz) at SWR < 1.5 Link: A step-by-step description of building this Yagi by Ian, S55O with good pictures |
|
The 5-Ele. by Graeme, VK3GOM |
|
 |
The 5-Ele. by Stefhan, SM4TZZ
|
|
Element |
Element-position (mm) |
Element-length (mm) |
|
R |
0 |
2960 |
|
DE |
615 |
2880 |
|
D1 |
1310 |
2740 |
|
D2 |
2960 |
2700 |
|
D3 |
4480 |
2650 |
Match with 2xLambda/4 75-Ohm-coax in parallel to a grounded socket, feedpoint impedance 50Ohm.
This antenna was designed for mounting 1,50-1,80m above a shortwave-beam without detuning, this yagi has a great bandwith and is uncritical in the data.
