Why set transponder to standby while taxiing?
Hello,
I have been taught to set the transponder to standby as I taxi the aircraft, then as I pass the hold turn the control to test then release to ‘Alt.’ The question is why bother setting it to standby for taxiing. All the instructors I have asked seem to recommend this action. Anyone know why? Unless the TXPR is using thermionic valves (obviously not), I can’t think why?
Cheers,
Tom.