This compact printed circuitboard will streamline dipole antenna mounting by consolidating the mechanical and electrical aspects into a single package. This PCB, only a little over two inches square, will save area on the top of balloon payloads, freeing up space for other sensors and other instruments. The final package will include a high-frequency male SMA connector, 4-40 fastener holes, and contact pads/guides for mounting the brazing-wire antennae.

preliminary PCB layout in traxmaker (circuitmaker2000)

SMA male connector layout, Digikey P/N J799-ND
--considerations for optimal performance will amend design

Inexpensive Brass SMA connector ($2.65) P/N LTI-SASF54GT, alernative