Batboard

Hi,
New to Motorola and was hoping someone knowledgable might be able to answer a question about the above 100 watt radio ?
The radio in question is a 403 - 470 mhz version and i was wondering if it might be possible to stretch the top of the programming range to include 480 Mhz ?
Any info on the above gratefully received.
Regards,

Should be doable, I have an s2 r split and all I did was the out of band hack.

Out of curiosity, any chance of getting a copy of your srec - modifying a radio I have to accept a s3 head