I recently purchased a 13cm transverter from SG-Lab. I have constructed a 13cm Bi-Quad antenna for use on local suburban SOTA summits, however I will need a high gain 2.4 GHz antenna for SOTA activations 100+ km from Canberra, but not one as bulky as a Grid-pack antenna or parabolic dish. I have decided to construct a 20 element 2.4 GHz (DL6WU format) yagi. I used VK5DJ’s Yagi Calculator software to generate yagi element dimensions, tolerance is a BIG fat Zero +/- mm. Boom material is wood 18 mm square Western Red Cedar, very stable material. When finished the boom will be coated with a generous coating of Cabothane, hard wearing waterproof clear timber varnish.
I am using the same construction technique as I did for the 12el 23cm (1296 MHz) Yagi. Reflector and driven elements are 3.1 mm aluminium rod, I have a 2 metre length on hand. Drive element material is 1.6 mm copper wire folded by hand, inside diameter is 22 mm. 🙂
13 cm 2.403 GHz Yagi Dimensions
12el 23cm Yagi and the new 20el 13cm Yagi with reflector and director elements. Folded dipole is next.
Testing my first prototype 2.4 GHz folded dipole
2.4 GHz Folded Dipole Assembly
13cm 2.4 GHz folded dipole – 137 mm length of 1.6 mm copper wire. 2403 MHz Impedance balun – 43 mm length of RG402, velocity factor = 69.5%.
SMA Panel Mount
First Published: 3 March 2018
Last Update: 3 March 2018