Works best with PETG or similar. I recommend default [email protected] presets. Add more perimeters for extra strength (optional). No supports required.
Assembly instructions
cut the welding rods to size (see the provided drawing for dimensions)
the 4mm brass rod needs to be cut 2mm shorter and split in half to account for the center gap
roughen up the ends of the brass rod with a file or sandpaper for easier soldering later
file / deburr all edges
mark the centerpoint of each aluminium element and insert each one into the appropriate printed part
use the top hole to align the center mark, then fill the hole with glue (optional)
solder the SMA connector to the SMA PCB
insert the brass elements into the 'Z' printed part and solder the PCB to them
cut a ≥70cm section of PVC pipe and mark element locations (see the provided drawing for dimensions)
attach the elements to the PVC pipe
make sure the pointy holes on the sides of the printed parts are facing towards the business end of the antenna
secure them by running a self-tapping screw through the hole on the bottom of each printed part
attach the SDR using the SMA connector and secure it to the 'S' printed part using a cable tie
connect the USB extension cord and secure it to the 'R' printed part using a cable tie
Ondřej Kučera
