Ameritron AL-811 HF Linear Amplifier HT Fuse Mod – M0UKD
Adding a 630mA fuse in series with a 15Ω resistor in the HT anode power supply to protect PSU and other valves in the event of a valve short.
Adding a 630mA fuse in series with a 15Ω resistor in the HT anode power supply to protect PSU and other valves in the event of a valve short.