For: DX portion 11 meter band
Antenna Type: 6el YAGI
Feedsystem: 50 Ohms direct fed
Designed by: 19DX348 version 1.01 feb 2025
Boom length: 9,32 Meter
Gain: 11,12 dBI (@27,555 Mhz)
FB <21 dB
FR <21 dB
Impedance: 50 ohms, direct fed
SWR below 1:1.1 > 500 Khz.
SWR below 2:1 > 1200 Khz
ELEMENTS DIAMETER ARE: 3/4 inch and 1/2 inch diameter.
The center part of the element is 1,8288 meter long. And the 1/2 inch for the rest of the element lenght. (this is what maco uses)
Do not change diameters, if you need other dimensions,
Or if you need to shift this yagi in frequency, please feel free to ask
ELEMENT: DISTANCE LENGHT:
REFLECTOR 0 5,540
RADIATOR 0,946 5,480
DIRECTOR 1 1,335 5,228
DIRECTOR 2 3,329 5,072
DIRECTOR 3 6,605 5,032
DIRECTOR 4 9,316 4,894
The impedance of the antenna is 50 Ohms and direct feed can be applied.
It is recommended to always use A RF choke or 1;1 balun.