Long5  164 160 146 150 144
Long6  170 161 150 146 146 138
Short5 170 164 150 154 150

Meshtastic Yagi 6 element 869 mhz wideband 820-900 mhz

0   47  64  112 160 230
170 161 150 146 146 138
10 db Long6 D=2-2.4mm

Lengths (Back-to-front):
Reflector: 170mm ((170-12)/2=79)
Driven element: 161mm ((161-12)/2=74.5) 2*79
Director1: 150mm ((150-12)/2=69) Bend a little forward
The distance between the ends of the active element and the first director should be 22 mm.
Director2: 146mm ((146-12)/2=67)
Director3: 146mm ((146-12)/2=67)
Director4: 138mm ((138-12)/2=63)

Dozor
https://what3d.ru/news/341-antenna-6-elementov-jagi-868-mgc.html
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Meshtastic Yagi 5 element 869 mhz

0   69  95  157 230
164 160 146 150 144
10 db Long5 D=2-2.4mm

Lengths (Back-to-front):
Reflector: 164mm ((164-12)/2=76)
Driven element: 160mm ((160-12)/2=74) 2*79
Director1: 146mm ((146-12)/2=67)
Director2: 150mm ((150-12)/2=69)
Director3: 144mm ((144-12)/2=66)

Epistaphrosiy
https://makerworld.com/ru/models/1774558-yagi-antenna-868-mhz-for-lora-meshcore-meshtastic
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Meshtastic Yagi 5 element 869 mhz short

0   45  73  117 165
170 164 150 154 150
9 db Short5 D=2-2.4mm

Lengths (Back-to-front):
Reflector: 170mm ((170-12)/2=79)
Driven element: 164mm ((164-12)/2=76) 2*81
Director1: 150mm ((150-12)/2=69)
Director2: 154mm ((154-12)/2=71)
Director3: 150mm ((150-12)/2=69)

EW8AU
https://www.facebook.com/plugins/post.php?href=https%3A%2F%2Fwww.facebook.com%2Fvladimir.ew8au%2Fposts%2Fpfbid02o84YTQ1H8JSzwcHDvWEGYajtKK74KeSqUhJf22umsUA5my18J2yPhEtKh9sRq69al
