In article , Teacherjh wrote:

AIM or no AIM, I'd put it to standby while changing the squawk. You're not
supposed to squawk an incorrect code either, and if you're not on standby,
that's what you're doing while changing.

I suspect it doesn't make much difference as it's over in a moment.

The only time it really makes a difference is if you accidentally
switch it to the 7500+ neighborhood. A good rule of thumb is to roll in
the first number (which at least in the Minneapolis area is never 7) and
then do the rest.

Do people get 7xxx codes elsewhere in the United States?

Regards,

Mike