I wrote to Bendix-King and they confirm there is a built in delay when
tuning on the KT-78 transponder. I would suspect it would apply to others.


-------------
Regards, Ross
C-172F 180HP
KSWI


TaxSrv wrote:
Be that as it may, I believe most transponders just
wait a static timeout amount (30-45 sec), whenever
transitioned from OFF to ON, even if you've
already had it on.

--- Jay



Is simply what they do. The microprocessor in the Kings invariably
sets the delay; Narco merely first charges up a capacitor which
takes about 30 sec. So, whether she needs "warm-up" or not, it
can't xmit until the light goes out.

Fred F.