Is there any way to turn the sound on and leave it on all night?

https://www.manualslib.com/manual/588746/Timex-T618.html

Page 14 of similar model - how to shut off alarms.

Timex T618 Operation Manual

From the manual:

Setting the Clock
1. Press and hold the Time Set Button until the display begins flashing
2. Press the Reverse or Forward Button to set the time. Holding a button for a few seconds will advance or reverse the time rapidly. Set the correct AM/PM time, shown by the PM Indicator on the display
3. After setting the time, press the Enter Button or wait about ten seconds for the unit to beep twice and the display to return to the normal mode

Setting the Calendar (It is important to set the correct date in order to use the 7-5-2 Alarm settings)
1. Press and hold the Date Set/7-5-2 Button until the display flashes and the year replaces the month/day at the bottom of the display
2. Press the Reverse or Forward Button to set the correct year, and then press the Enter Button. The unit will beep and the display will show the month and day. Again, press the Reverse or Forward
Button to set the current date
3. After setting the date, press the Enter Button or wait ten seconds to return to the normal display mode

Setting the AM/FM Radio Alarm
1. Press and hold the Radio Alarm Button until the settings and radio frequency appear on the display.
2. Press the Reverse or Forward Button to set the alarm time.
3. Use the AM/FM Band Button or the Memory Set 1-6 Buttons to select a radio station to wake up to. Adjust the alarm volume using the Volume Thumbwheel
4. After setting the wake time and sound, you will need to select your 7-5-2 setting. The 7-5-2 setting lets you set the alarm for a full week, Monday through Friday, or the weekend. Before setting the alarm, be sure that you have set the date, as shown in the Setting the Clock and Calendar section. While the display is still flashing, press the Date Set/7-5-2 Button until the desired setting is shown at the top of the display.
5. After you have programmed the radio alarm, press the Enter Button or wait ten seconds to return to the clock display. The Radio Alarm Indicator will appear on the display, showing that the alarm is set.

Setting the Nature Sounds Alarm
1. Press and hold the Sounds Alarm Button until the settings and Nature Sounds Indicator appear
2. Press the Reverse or Forward Button to set the alarm time
3. Use the Nature Sounds Button to select a nature sound to wake to. There is a choice of four sounds:
Sound #1: Ocean Surf
Sound #2: Forest Spring
Sound #3: Rushing Brook
Sound #4: Summer Wind
4. After setting the wake time and sound, you will need to select your 7-5-2 setting. The 7-5-2 setting lets you set the alarm for a full week, Monday through Friday, or the weekend. Before setting the alarm, be sure that you have set the date, as shown in the Setting the Clock and Calendar section. While the display is still flashing, press the Date Set/7-5-2 Button until the desired setting is shown at the top of the display.
5. After you have programmed the nature sounds alarm, press the Enter Button or wait ten seconds to return to the clock display. The Nature Sounds Alarm Indicator will appear on the display.

Setting the Buzzer Alarm
1. Press and hold theBuzzer Alarm Buttonuntil the alarm setting appears on the display.
2. Press the Reverse or Forward Button to set the alarm time.
3. After setting the wake time and sound, you will need to select your 7-5-2 setting. The 7-5-2 setting lets you set the alarm for a full week, Monday through Friday, or the weekend. Before setting the alarm, be sure that you have set the date, as shown in the Setting the Clock and Calendar section. While the display is still flashing, press the Date Set/7-5-2 Button until the desired setting is shown at the top of the display.
4. After you have programmed the buzzer alarm, press the Enter Button or wait ten seconds to return to the clock display. The Buzzer Alarm Indicator will appear on the display, showing that the alarm is set.

how to turn off alarm?

Hello, To turn off the alarms follow these steps -

1. After the alarm sounds, press the "F" alarm off/reset button to shut the alarm off but retain the 7-5-2 alarm settings.
2. If you want to turn the alarms completely off and cancel the 7-5-2 settings, press the "alarm" button so that the "alarm" indicator is no longer visible. As long as you can see the word "alarm" on the display the alarms will continue to go off according to your 7-5-2 alarm settings.

Regards, Tony

Move the switch on the top back to either the clock symbol to set time or alarm 1 or 2 depending on which one you wish to set. On either side of the snooze button is a fwd and rev button. Push fwd to advance the time or rev to go back. If setting the alarm it will automatically turn the alarm on when you set it. To turn alarm on or off manually, push the button for the alarm you choose on the top rear right side.

Press alarm set button, time display will blink. Then press off/reset button to toggle hourly beep on/off.

Under the heading ALARM are 3 buttons. One says RADIO, one says CD, and one says NATURE. If any of these buttons are selected, the alarm will go off. So make sure none are selected, and the alarm won't sound.

All I wanted was the instruction booklet for this radio,and no I have not found one,and you're no help

Hold the time set key in until the time flashes. Now let it go and use the tuning forward and back keys to set the time. I had the same problem because I continued to hold the timeSet button down while trying to adjust it. If you do, the forward/back keys have no effect.

I have a sharp 12 inch atomic clock...cant get it to reset and dont have instructions...please help