I'm looking for one that will send you to sleep with the radio on but will wake you with a buzzer. All the ones I look at only seem to play the radio in the morning if you go to sleep with it on. Any ideas?
Maybe you should re-read the instructions of your alarm. I have owned two radio alarms and on both of them there was a facility where you could push a button, the radio would play for an hour and then automatically switch itself off when time was up, it could be adjusted for two hours usually. I didn't even have to have the alarm on for it to work. On my current alarm it's the sleep button that activates that facility.