On the Timex T311, to disable the radio alarm, press the Radio Alarm button once. The Radio Alarm Indicator light should go out and the radio alarm won't sound. If you press the Radio Alarm button once more, the radio alarm will toggle to on and that indicator light will come on. Similarly, press the Buzzer Alarm button once to enable the buzzer alarm and press it again to disable the alarm.
See page 9 of the manual to see the directions to toggle these alarms on and off. The manual is available from Timex Audio on the product page:
https://timexaudio.com/support/product/T311/ . The direct link to the manual is
https://timexaudio.com/media/uploads/product/files/T311IB57574_35.pdf .
I hope this helps.
Cindy Wells