Schedule possible to turn on/off the radio/WIFI transmission?

Yes, it is there is in the setup.

Go to the network tab

Click on Enable Access Control and then Time Access Control which will open a second menu page.

Remember if you want an off time like 11pm and on time at 7am it is a different day.

So you set off from 11-11.59pm and 12.01-7am next day.

A 10sec google ..

http://9to5mac.com/2013/10/06/how-to-set-time-limits-on-your-wi-fi-network-using -airport-utility/

https://discussions.apple.com/thread/5268536?answerId=22836329022#22836329022

I want to know whether it's possible to set-up a schedule to turn on/off the radio/WIFI transmission for the Airport TimeCapsule?

The Timed Access controls will allow you to set up a specific timeframe each day when wireless devices are allowed to connect to the network. So, the rule that you would set up would look like

Everyday........Between.......7:00 AM and 11:00 PM......or, it might read 23:00 if you are using a 24 hour clock

But, the wireless will still be "on" at all times......since devices can only connect between 7:00 AM and 11:00 PM, devices will not be able to connect between the hours of 11:01 PM (23:00) and 6:59 AM.

So, if your question is really asking can the actual wireless transmission be turned on and off at specifiied times, the answer would be "no".

The question is why not? any cheap router can do this function, i don't want to keep the wifi waves on with my babes near the wall on his beds. That's a terrible question, i don't understand why apple can't apply any solution of this. Anybody knows if automator can make it with easy mode?

"The question is why not?"

This is a user-to-user forum. We are all users here, just like you.

You are asking a "why" question that can only be answered by Apple.

Excuse my english is not so good as my spanish. I have only simple words. 😢