Tried to get them yesterday during practice but there is so much radio traffic at Brands this weekend, most of it hospitality chatter, it proved impossible to pin any thing down, I've hunted the net for them as well without luck.
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boogity, boogity, boogity, lets go racing boys!
There doesn't seem to be any websites available to list A1GP or any other motorsport radio frequencies...so I've set up this group, so hopefully others can contribute: