Thanks for some more responses, I should have looked into it more carefully before buying the Japan version. These radio's can sometimes be scarce to buy used when looking for one and at the time, all I can find was the Japan version. My guess was that all versions were essentially built the same with the same components and the MARS mod I found online would expand "all" the frequencies. I see now this is not the case.? It's still a good radio and covers enough 2m for me and has plenty of HF range that will suit me.
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Thanks again, Andrew K5KNM