Lost manual. Need to know how to change th pre set radio stations and set the alarm.

press and hold the button you want to assign a station to.

If radio has save button then tune your station push save button then push a number on preset you want it saved to. The radio automatticlly stores the strongest station in your area.

Select the AM or FM wave band.
Tune the radio to a station then press and hold down the 1 or 2 or 3 pre tune station button until it beeps. Then this radio station is then set to which pre tune button you have selected.
Repeat to set the buttons for other radio stations.

make sure red wire goes to an auxilliary power and yellow goes to battery.

I purchased a used living solution iPod statio which works with iPhone however I am usable to set clock as I do not have owners manual model ATC 0899

Here is the full manual
http://www.timexaudio.com/pdf/T311IB57574_35.pdf

Here are the instructions from the manual.

Setting the Radio Alarm
1. Press and hold the
Radio Alarm Button. The display will flash and the Radio Alarm Indicator will
appear. If you do not begin setting the time within ten seconds of pressing the button, the display will stop
flashing and you will need to press the
Radio Alarm Button again.
2. While the display flashes, press the Reverse and  Forward Buttons to set the wake time. Hold a button
for a few seconds to set the time rapidly. Be sure to set the correct AM/PM time, as shown by the PM Indicator.
3. After setting the radio alarm time, you will need to select the station. First, press the  Radio Band Button
to select a radio frequency. Next, select a station using the Memory Set 1-6 Buttons. For more
information on programming radio stations into memory, see the Programming Radio Station Settings section
of this manual. Rotate the  Volume Thumbwheel to set the wake sound volume.
4. After setting the radio alarm wake time and sound, you will need to select the 7-5-2 setting. The 7-5-2 setting
lets you set the alarm for a full week, weekdays only, or the weekend. Before setting the alarm, be sure that
the correct date is set, as shown in the “Auto-Set” and Manual Time and Date Settings section of the manual.
While the display is still flashing, press the  Date/7-5-2 Button until the desired setting is shown.
5. After you have set the radio alarm wake time, sound, and 7-5-2 setting, press the  Enter Button. The
Radio Alarm Indicator will appear on the display, showing that the radio alarm has been set.

Here's a link to the manual download page at Alpine. It should tell you everything you need to know.

http://www.alpine-usa.com/US-en/support/support_search.php?modelname=CDM-7835

Setting the Alarm 1 for AM/FM Radio
1. Press and hold the 2 Radio Alarm 1 Button. The display will flash and the Radio Alarm Indicator will appear. If
you do not begin setting the time within ten seconds of pressing the button, the display will stop flashing and you will
need to press the 2 Radio Alarm 1 Button again.
2. While the display flashes, press the 1 Reverse and 6 Forward Buttons to set the wake time. Hold a button for a few
seconds to set the time rapidly. Be sure to set the correct AM/PM time, as shown by the PM Indicator.
3. After setting the radio alarm time, while the display is still flashing you will need to select the station. First, press the
L Mode/DST Button to select a radio frequency. Next, select a station using the M Memory Set 1-6 Buttons. For
more information on programming radio stations into memory, see the Programming Radio Station Settings section of
this manual. Rotate the O Volume Thumbwheel to set the wake sound volume.
4. After setting the radio alarm wake time and sound, you will need to select the 7-5-2 setting. The 7-5-2 setting lets you
set the alarm for a full week, weekdays only, or the weekend. Before setting the alarm, be sure that the correct date
is set, as shown in the “Auto-Set” and Manual Time and Date Settings section of the manual. While the display is still
flashing, press the 9 Date/7-5-2 Button until the desired setting is shown.
5. After you have set the radio alarm wake time, sound, and 7-5-2 setting, press the 4 Enter Button. The Radio Alarm
Indicator will appear on the display, showing that the radio alarm has been set.
Setting Alarm 2 for Nature Sounds/Buzzer
1. Press and hold the 7 Nature Sounds/Buzzer Alarm 2 Button until the Alarm 2 settings and Sounds Alarm
Indicator appear on the display.
2. Press the 1 Reverse or 6 Forward Button to set the Alarm 2 time.
3. Use the L Mode/DST Button to select a nature sound or the buzzer to wake to. There is a choice of five sounds:
Sound #1: Ocean Surf
Sound #2: Birds
Sound #3: Brook
Sound #4: Wind Chimes
buz: Buzzer
4. See Note #4 in the Setting Alarm 1 section for instructions on setting the 7-5-2 alarm setting for Alarm 2.
5. After you have programmed the Alarm 2 settings, press the 4 Enter Button or wait ten seconds to return to the clock
display. The Sounds Alarm Indicator will appear on the display, showing that the alarm is set.

Hi gidgid.
This is direct from manual mailed to me from Oregon Scientific re my own contrast problem.
1. Press [ALARM] to switch to display the alarm setting.
2. Select ALARM 1 or ALARM 2 using [ALARM].
3. Press and hold [ALARM] for two seconds.
4. Use VOLUME [ + ] / [ - ] to enter the hours.
5. Press [ALARM].
6. Use VOLUME [ + ] / [ - ] to enter the minutes.
7. Press [ALARM].
8. Use VOLUME [ + ] / [ - ] to select ALARM or RADIO. If
ALARM is selected, a two-minute crescendo alarm will be
emitted at the set time when the alarm is active. If RADIO is
chosen, the radio will be turned on for two hours at the set time
instead.
9. If RADIO is chosen, use [STATION] to choose the radio
station and press [AM / FM] to select AM or FM.
10. Press [ALARM].
11.Use VOLUME [ + ] / [ - ] to set the volume of the wake up radio.
12. Press [ALARM] to exit.
Note: If there is no battery for the radio, there is no operation for
step 9 ~ 11.
sleepy head

You can download the manual from the link below: http://157.254.235.130/public/RP3721%20EN.pdf Please update the question & let us know if the information given was useful to you - Good Luck!