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The article describes how to build a 12V emergency power supply for amateur radio stations. Starting with a basic jump-start system, the author upgraded it using a Group 27 deep-cycle battery and a 45W photovoltaic solar system, adding connectors and outputs for various devices. The system is portable, affordable (under $100), and capable of powering a station for 20 hours. The author emphasizes keeping batteries charged with a float charger and offers assistance to fellow club members interested in building their own power supply.