137.5mhz QFH antenna

thingiverse

An easier to print qfh antenna that can be adjusted for variance in pipe sizes. this should fit 1/2 pcv pipe/conduit as well as any pipe within approx 21-24mm Improvements include. ~ Symmetrical parts ~ Correct size for 137.5 ~ Short and long arms marked ~ Thicker ~ Larger wire holes (4.5mm) Usage Print 2 of the x shaped parts and a short and long arm. Trim nubs to fit pipe using side cutters or a file Assemble parts onto rod and glue Wire antenna per attached img 12/32020 Added segmented files for smaller printers 200x200 you will need 1 x-part 2 center sections 4 long arms 4 short arms For 100x100 1 x-part 2 center sections 4 long arms 4 short arms 8 extenders