Tape measurement yagi. The longest part is 530 mm, easy fit to your backpack. Very easy and fast deploy. Great for SOTA and portable operation. Can be used in horizontal or vertical polarization.
Not good for windy weather.
Easy to print, maybe you need adjust boom diameter.
- PVC pipe 25 mm diameter 530 mm
- Measuerement tape width 12 mm lenght 3m
- M3 screws 10 mm lenght
- M3 Nuts
- Coax cable with connector
- Magnets - 8 mm diameter
Dimensions (based on DK7ZB design):
Director 2 (70cm) lenght 297 mm position 500 mm
Director 1 (70cm) lenght 323 mm position 399 mm
Radiator (2m and 70cm) lenght 939 mm position 370 mm
Reflector (70cm) enght 320 mm position 230 mm
Reflector (2m) lenght 1022 mm postion 0 mm
Radiator is divided to 2 parts with 5 mm gap.
Coax is soldered directly to radiator.
Maybe you need little adjust (1 or 2 mm) radiator lenght get best match on the middle of band.