The WA1OKB APRS Digipeater is built from the following components

• Raspberry Pi Zero W

• Audio Injector Zero Raspberry Pi Zero sound card hat

• SV1AFN's DRA-818V tranceiver module

• a BG7SGM RF amplifier with a 13W amplifier module

• 12v 25W solar panel and MPPT solar charge controller

• 12V 9ah SLA battery backup

• Direwolf AX.25 packet modem/TNC and APRS encoder/decoder software

• Ed Fong DBJ-1 dual band base antenna

• Custom open source ISS tracking software I wrote to automatically track the ISS, and switch the DRA-818 radio to the correct frequency when the International Space Station is overhead.

• All contained in a weatherproof utility service enclosure