KB9NK 10 Meter Beacon

Power Supply Modifications

Hardware - Astron - SS-12
Output 13.8vdc - 10A continuous, 12A Peak

The SS-12 was modified to add forced air cooling for continuous operation as a beacon power supply.  A 12vdc 40mm computer case fan was added to the rear of the case to pull air across the power transistors out of the case.

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