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Old 04-17-2002 | 06:14 AM
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Aerosplat
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From: Lawrenceville, GA
Default AC powered light
Any light powered from AC power will have a 60 cycle pulse which will affect the reading of the TACH. If you need to use a TACH indoors, use a high powered BATTERY operated spot light in front of the prop, and dim the house lighting as much as possible.
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