[Bobby]

Mark,

I know that. NCAA, NF, and FIBA all go to the horn (NCAA/NF) or the "timekeeper's signal" (FIBA).

The horn has more to do with tradition. In the days before modern scoreboards with the clocks which would be in a 8-minute clock with hands instead of the digits, the horn was the determining factor. You also didn't have the clocks which ran in tenths used by FIBA which led to the NBA's 1989 rule change adopting the FIBA-style game clock. The NCAA mandated FIBA clocks in 2001.

Modern scoreboards have made the zeroes on the clock more prevalent, and even modern rulings on the clock are a byproduct of technology.

The NBA mandated the red light on the backboard in 1980, and NCAA Division I mandates it today. Today's NBA rule now states the red light is lit on the shot clock too.

FIBA's version is a quirky even though Hank Nichols is the FIBA rules secretary. On a whistle and then the 24-second signal sounding, it's a 24-second signal which sounds in error. That's a fresh 24.

If you are a local federation, I would say the best thing is to seriously use the NCAA, NBA, or FIBA rule and write it into the book. The FIBA's rule is the simplest.