# rpitx-coax-pcb Expansion board for Raspberry PI allowing to use coaxial SMA output instead of direct wire connection to GPIO to connect radio equipment (antennas, amplifiers, switches, etc.) when working with the [rpitx](https://github.com/F5OEO/rpitx) package. The PCB is installed by attaching to the GPIO of the Raspberry PI and can be additionally fixed by using the holes on the Raspberry PI and expansion board side. ## Current development progress: [](https://github.com/IgrikXD/rpitx-coax-pcb) [](https://github.com/IgrikXD/rpitx-coax-pcb) **PCB versions:** * **PCB_rpitx-coax-pcb-NOFILTER** - no filtering, only output to SMA connector * **PCB_rpitx-coax-pcb-GP1212-GP731** - the radio path passes through a filter in the GP1212 / GP731 case **RF connector:** SMA **Feed line:** 50 Ohm coaxial cable **Used PCB Material:** FR-4 **PCB thickness:** 1.6 mm **PCB copper weight:** 1 oz [rpitx-coax-pcb project page at GitHub][1] [rpitx project page at GitHub][2] [Buy filters in GP1212 / GP731 case][3] ## How to contact me? - E-mail: igor.nikolaevich.96@gmail.com - Telegram: https://t.me/igrikxd - LinkedIn: https://www.linkedin.com/in/igor-yatsevich/ [1]: https://github.com/IgrikXD/rpitx-coax-pcb [2]: https://github.com/F5OEO/rpitx [3]: https://www.minicircuits.com/WebStore/RF-Filters.html