2+3 element 2m (145 MHz) and 70cm (435MHz) duoband ultra portable yagi’

thingiverse

Human: Tape measurement yagi. The longest component spans 530 mm, ideal for a secure fit in your backpack. Deployment is seamless and quick, perfect for SOTA and portable operation. Versatility shines as it can be utilized with either horizontal or vertical polarization settings. Not recommended for harsh weather conditions involving strong winds. Instructions: Effortless to print; minor adjustments to boom diameter may be necessary. Parts required: PVC pipe - 25 mm in diameter, measuring 530 mm in length Measurement tape with a width of 12 mm and a total length of 3 meters M3 screws measuring 10 mm in length M3 Nuts Coaxial cable with connector Magnets with a diameter of 8 mm Dimensions (derived from DK7ZB design): Director 2 - spanning 297 mm in length, positioned at 500 mm on the axis Director 1 - stretching 323 mm in length, positioned at 399 mm on the axis Radiator (divided into two parts) - measuring 939 mm in length for both bands, positioned at 370 mm on the axis Reflector (2m) - extending 1022 mm in length, resting at position 0 mm on the axis Reflector (70cm) - reaching a length of 320 mm, situated at position 230 mm on the axis Note: The radiator is sectioned into two distinct parts with a 5 mm gap between them. Direct coaxial connection to the radiator is preferred; slight adjustments may be needed (about 1-2 mm) to optimize frequency for best results.