Moxon 915MHz

Uses 1.5mm 16awg solid wire available at most home improvement stores.
Some light filing may be needed to get the RG402 through the hole. I made it snug to hold the cable in place securely.

The wire does need to be measured bent and cut before you put it in the print. I used this antenna calc to get the dimensions: http://w4.vp9kf.com/moxon_design.htm

Using the Zip Tie attachment idea from PiManFPV