The spacing steps between stations broadcasting on AM mode (MW and LW) in Europe is 9khz but 10khz spacing is used in US and other countries. I suspect your Alpine is set up to tune in US or other 'foreign' size steps
Does it only scan for stations or can you tune it manually using buttons or a knob to move the frequency up or down?
Obviously not universal but I've had several of different european brands, plus a Kenwood, that tune in 1khz steps when using the manual option. If you can get the main stations you want, eg 693 & 909 for R5 and 198 for R4 to tune that way it should be possible to store them as presets.
If you take the radio out of the car you may find a slider to select spacing somewhere on the case or inside it. If you google the exact model for a user manual it may explain how to change either physically or by a configuration mode that allows you to set such things in software.
It might also be switchable on power up after disconnection from battery as though on first use BUT MAKE SURE YOU'VE GOT THE SECURITY CODE BEFORE DISCONNECTING.
Edited by Bromptonaut on 11/09/2013 at 16:03
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