I bought a Peugeot 207 with Clarion Radio in NIreland with all the UK stations and I brought it into Republic of Ireland and can get the local station working

SOURCE: setting radio stations on clarion auto dbr2475 w magi-tune

try this on most units search the station that you want to save and when its on it press and hold the numbered buttons till it says on the display saved or you hear a tone

SOURCE: Cannot Manually Tune The Radio CLARION DRB4475R CAR CD PLAYER

check your setting on the itrip unit to make sure it is set for frequency

SOURCE: station storage

Have you conected the stereo to 12v + before the key? If you conect the stereo after the key it will not get 12+ to the memory. It needs constant 12v+ to keep the memory...

SOURCE: Local Radio Station Coming Through Speakers

It's called RFI, Radio Frequency Interference.

Certain capacitors in the amp, or on the motherboard can act as radio tuners, as can unshielded speaker wire. Your only hope is to use shielded speaker cables, ensuring that the shield is grounded, and make sure you have three prong (grounded) outlets. Sometimes rerouting your wires behind the PC can help.

Do you have dial-up service/modem. If so the telephone wire is susceptible to RFI in a big way. The RFI can bleed into the PC and cause your situation.

Try reading this artile and see if there is something that can help you in it...
http://www.stevelarkins.freeuk.com/computer_interference.htm

Testimonial: "I'll give the rerouting a try. Thanks!!"

SOURCE: Sendai CD789 radio preset stations

At the back you should have a red, black and yellow (maybe blue). swap the red and yellow over. Yellow = memory [constant voltage] red = live with ignition. Hope this helps. Wayne. Tech Rehab. http://techrehab.t35.com