I have a goodmans cd player for my wifes car, she has tuned in and stored the stations in but every time she turns off the engine the radio becomes untuned i appreciate this is a weird question but i was wandering if you could help me

If your radio has memory locations where it stores station frequencies then you can store those frequencies for easy recall. But if your radio does not have memory storage then it will usually tune in to the last station every time you turn the radio on.

Antenna problem ?

Tune to a station you want to program. Hold one of the station preset buttons down for about 3-4 seconds. It should 'beep' and store the station.

When you find a frequency that you
want to store in memory, press one of pre-
set tuning buttons 1through 6 and hold until the
preset number stops flashing.
The number you have pressed will flash in the
preset number indicator and then remain lit.
The selected radio station frequency has been
stored in memory.
The next time you press the same preset tun-
ing button the radio station frequency is re-
called from memory.

Go here:
http://www.crutchfield.com/S-j3EX2WZGpxL/p_113MP232/Kenwood-KDC-MP232.html?tab=features_and_specs
You can download the manual and specifications.

u have no power to the keep alive memory wire, you should have one 12 volt wire hot all the time to the radio connector.

Sony XPLOD CDX-GT200 CD Player
Radio:
To receive store stations(press); store stations (press & hold). Preset tuning is not possible, however one can store the correct frequency in the memory.

Manual storing:
while receiving the station that you want to store, press and hold a number button(1 to 6) until "MEM" appears. The button number appears in the display. PS: If u try to store another station on the same number, the earlier station will be replaced by the new one............................................sodeep

Setting Time
1 Press TITLE repeatedly until the time is displayed.
For details, see “Displaying the Text” (page 13)
2 Press and hold TITLE for at least 2 seconds while
the time is displayed.
The time indication will blink.
3 Turn the Rotary encoder to adjust the hours while
the time indication is blinking.
4 When the hour has been adjusted, press MODE.
5 Turn the Rotary encoder to adjust the minutes
while the time indication is blinking.
The time is automatically set 5 seconds after the minute
adjustment. The time can also be manually set by pressing TITLE.
• To synchronize the clock to another clock/watch or radio time
announcement, press and hold MODE for at least 2 seconds after
setting the “hour.” Minutes will reset to “00”. If the display shows
over “30” minutes when you do this, the time will advance one hour.
Listening to Radio
1 Press SOURCE/POWER until a radio frequency
appears on the display.
2 Press BAND repeatedly until the desired radio band
is displayed.
F1 (FM1) F2 (FM2) AM F1 (FM1)
3 Press TUNE to select the tuning mode.
DX SEEK (Distance mode) SEEK (Local mode)
OFF (Manual mode) DX SEEK
• The initial mode is Distance mode.
Distance mode:
Both strong and weak stations will be automatically tuned in
(Automatic Seek Tuning).
Local mode:
Only strong stations will be automatically tuned in (Automatic
Seek Tuning).
Manual mode:
The frequency is manually tuned in steps (Manual tuning).
4 Press or to tune in the desired station.
Holding down or will change the frequency
continuously.
Manual Storing of Station Presets
1 Select the radio band and tune in a desired radio
station you wish to store in the preset memory.
2 Press and hold, for at least 2 seconds, any one of the
preset buttons (1 through 6) into which you wish
to store the station.
The selected station is stored.
The display shows the band, preset number and station
frequency memorized.
•You will need to start from set up or you will not be able to set the mins

Quoting from page 6 of the manual:

"Select the radio band and tune in a desired radio station you wish to store in the preset memory.
Press and hold, for at least 2 seconds, any one of the preset buttons (1 through 6) that you want to store the station on. The selected station is stored. The display shows the band, preset number and station frequency memorized. A total of 18 stations can be stored in the preset memory (6 stations for each band; FM1, FM2 and AM). If you store a station in a preset memory which already has a station, the current station will be cleared and replaced with the new station."

http://www.retrevo.com/search/v2/jsp/downloadPage.jsp?doc=934dc6a1672f80b9d320c470df81f04d&q=Alpine+CDE-9842

When a station is tuned in the unit will decode the incoming clock data after 2 minutes will display the correct time when the 'DSP' button is pressed.
Note: some stations do not transmit a PTY or CT information & therefore the clock display may not be available.
For clock setting it is recommended to tune to a National Radio Station.
Hope This Helps.