Understanding 12V DC Power for Radio Amateurs

     In the March 2026 tech night discussion, Tom Apalenek WA2IVD, highlighted that the commonly referenced "12V" is actually 13.8V, accounting for a ±15% variance crucial for radio operation. He emphasized the risks of using low-quality power supplies, which can lead to voltage spikes that damage equipment. Protective measures like crowbar circuits were recommended to safeguard radios from overvoltage. The talk underscored the importance of investing in reliable power supplies to ensure optimal performance and longevity for amateur radio setups.