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Thread: Why set transponder to standby while taxiing?
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Old 21st January 2003 | 09:43
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Fuji Abound
 
Joined: May 2001
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From: UK
I have always understood many older transponders have a thermionic valve and the valve does not take kindly to being suddenly switched on, whereas in stand by mode the valve has a chance to warm up. Myth or fact?
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